./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/test-easy11.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/test-easy11.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 d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:09:24,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:09:24,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:09:24,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:09:24,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:09:24,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:09:24,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:09:24,186 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:09:24,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:09:24,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:09:24,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:09:24,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:09:24,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:09:24,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:09:24,190 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:09:24,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:09:24,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:09:24,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:09:24,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:09:24,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:09:24,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:09:24,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:09:24,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:09:24,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:09:24,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:09:24,198 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:09:24,198 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:09:24,198 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:09:24,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:09:24,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:09:24,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:09:24,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:09:24,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:09:24,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:09:24,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:24,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:09:24,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:09:24,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:09:24,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:09:24,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:09:24,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:09:24,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:09:24,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:09:24,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:09:24,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2024-10-12 00:09:24,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:09:24,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:09:24,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:09:24,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:09:24,517 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:09:24,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-12 00:09:26,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:09:26,297 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:09:26,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-12 00:09:26,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea1f38594/6ad2dde12e8f46ba850bc80bba7ff855/FLAGe701862e2 [2024-10-12 00:09:26,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea1f38594/6ad2dde12e8f46ba850bc80bba7ff855 [2024-10-12 00:09:26,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:09:26,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:09:26,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:26,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:09:26,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:09:26,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c1ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26, skipping insertion in model container [2024-10-12 00:09:26,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,369 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:09:26,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:26,577 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:09:26,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:26,614 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:09:26,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26 WrapperNode [2024-10-12 00:09:26,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:26,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:26,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:09:26,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:09:26,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,649 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-10-12 00:09:26,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:26,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:09:26,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:09:26,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:09:26,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,690 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 00:09:26,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:09:26,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:09:26,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:09:26,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:09:26,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (1/1) ... [2024-10-12 00:09:26,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:26,753 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 00:09:26,756 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 00:09:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:09:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:09:26,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:09:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:09:26,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:09:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:09:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:09:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:09:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:09:26,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:09:26,809 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 00:09:26,917 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:09:26,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:09:27,109 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:09:27,110 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:09:27,306 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:09:27,306 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 00:09:27,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:27 BoogieIcfgContainer [2024-10-12 00:09:27,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:09:27,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:09:27,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:09:27,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:09:27,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:09:26" (1/3) ... [2024-10-12 00:09:27,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdd49f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:27, skipping insertion in model container [2024-10-12 00:09:27,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:26" (2/3) ... [2024-10-12 00:09:27,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdd49f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:27, skipping insertion in model container [2024-10-12 00:09:27,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:27" (3/3) ... [2024-10-12 00:09:27,323 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-10-12 00:09:27,342 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:09:27,342 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-12 00:09:27,343 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:09:27,400 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:09:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-10-12 00:09:27,464 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-12 00:09:27,465 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:09:27,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-12 00:09:27,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-10-12 00:09:27,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-10-12 00:09:27,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:09:27,492 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;@466a76b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:09:27,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-12 00:09:27,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:09:27,498 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-12 00:09:27,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:09:27,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:27,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:09:27,501 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 237689506, now seen corresponding path program 1 times [2024-10-12 00:09:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:27,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347571471] [2024-10-12 00:09:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:27,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:27,779 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 00:09:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347571471] [2024-10-12 00:09:27,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347571471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:27,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:27,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779939572] [2024-10-12 00:09:27,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:27,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:27,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 00:09:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:27,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:28,129 INFO L124 PetriNetUnfolderBase]: 243/438 cut-off events. [2024-10-12 00:09:28,129 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-12 00:09:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 438 events. 243/438 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2038 event pairs, 7 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 834. Up to 298 conditions per place. [2024-10-12 00:09:28,141 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-10-12 00:09:28,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 203 flow [2024-10-12 00:09:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:09:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:09:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-12 00:09:28,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-12 00:09:28,160 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 5 states and 76 transitions. [2024-10-12 00:09:28,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 203 flow [2024-10-12 00:09:28,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:28,168 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 66 flow [2024-10-12 00:09:28,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-12 00:09:28,176 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-10-12 00:09:28,177 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 66 flow [2024-10-12 00:09:28,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 00:09:28,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:28,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:09:28,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:09:28,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:28,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash 237689539, now seen corresponding path program 1 times [2024-10-12 00:09:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768804788] [2024-10-12 00:09:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:28,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:28,269 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 00:09:28,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768804788] [2024-10-12 00:09:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768804788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:28,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533151266] [2024-10-12 00:09:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:28,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:28,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:28,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:09:28,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:28,472 INFO L124 PetriNetUnfolderBase]: 195/358 cut-off events. [2024-10-12 00:09:28,472 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-10-12 00:09:28,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 358 events. 195/358 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1498 event pairs, 49 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 574. Up to 163 conditions per place. [2024-10-12 00:09:28,478 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 5 changer transitions 2/53 dead transitions. [2024-10-12 00:09:28,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 224 flow [2024-10-12 00:09:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-12 00:09:28,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-10-12 00:09:28,483 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 66 flow. Second operand 4 states and 81 transitions. [2024-10-12 00:09:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 224 flow [2024-10-12 00:09:28,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:28,487 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 82 flow [2024-10-12 00:09:28,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-12 00:09:28,488 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-10-12 00:09:28,489 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 82 flow [2024-10-12 00:09:28,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:09:28,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:28,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:09:28,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:09:28,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:28,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 237689540, now seen corresponding path program 1 times [2024-10-12 00:09:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351423626] [2024-10-12 00:09:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:28,608 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 00:09:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:28,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351423626] [2024-10-12 00:09:28,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351423626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:28,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:28,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29730796] [2024-10-12 00:09:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:28,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:28,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:28,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:09:28,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:28,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:28,754 INFO L124 PetriNetUnfolderBase]: 239/436 cut-off events. [2024-10-12 00:09:28,755 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-12 00:09:28,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 436 events. 239/436 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1910 event pairs, 63 based on Foata normal form. 14/408 useless extension candidates. Maximal degree in co-relation 598. Up to 157 conditions per place. [2024-10-12 00:09:28,759 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 41 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-10-12 00:09:28,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 255 flow [2024-10-12 00:09:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-10-12 00:09:28,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-10-12 00:09:28,762 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 82 flow. Second operand 4 states and 82 transitions. [2024-10-12 00:09:28,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 255 flow [2024-10-12 00:09:28,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:28,765 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 137 flow [2024-10-12 00:09:28,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2024-10-12 00:09:28,766 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-10-12 00:09:28,766 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 137 flow [2024-10-12 00:09:28,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:09:28,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:28,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:09:28,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:09:28,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:28,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1221559640, now seen corresponding path program 1 times [2024-10-12 00:09:28,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544274938] [2024-10-12 00:09:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:28,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:28,809 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 00:09:28,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:28,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544274938] [2024-10-12 00:09:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544274938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905122013] [2024-10-12 00:09:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:28,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:09:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:09:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:09:28,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:28,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 00:09:28,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:28,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:28,910 INFO L124 PetriNetUnfolderBase]: 239/450 cut-off events. [2024-10-12 00:09:28,911 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-10-12 00:09:28,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 450 events. 239/450 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2028 event pairs, 150 based on Foata normal form. 18/416 useless extension candidates. Maximal degree in co-relation 926. Up to 339 conditions per place. [2024-10-12 00:09:28,916 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-12 00:09:28,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 246 flow [2024-10-12 00:09:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:09:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:09:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-12 00:09:28,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-12 00:09:28,918 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 137 flow. Second operand 3 states and 52 transitions. [2024-10-12 00:09:28,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 246 flow [2024-10-12 00:09:28,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:28,921 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2024-10-12 00:09:28,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-12 00:09:28,922 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-10-12 00:09:28,923 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2024-10-12 00:09:28,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 00:09:28,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:28,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:28,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:09:28,924 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:28,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 784248755, now seen corresponding path program 1 times [2024-10-12 00:09:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024157462] [2024-10-12 00:09:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:28,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:28,976 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 00:09:28,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:28,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024157462] [2024-10-12 00:09:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024157462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:28,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:28,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:28,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678729941] [2024-10-12 00:09:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:28,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:28,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:28,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:28,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:09:28,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:28,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:29,143 INFO L124 PetriNetUnfolderBase]: 269/467 cut-off events. [2024-10-12 00:09:29,143 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-10-12 00:09:29,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 467 events. 269/467 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1947 event pairs, 28 based on Foata normal form. 19/428 useless extension candidates. Maximal degree in co-relation 1028. Up to 277 conditions per place. [2024-10-12 00:09:29,147 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 49 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-10-12 00:09:29,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 354 flow [2024-10-12 00:09:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:09:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:09:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-12 00:09:29,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-12 00:09:29,150 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 5 states and 72 transitions. [2024-10-12 00:09:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 354 flow [2024-10-12 00:09:29,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:29,154 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 134 flow [2024-10-12 00:09:29,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-12 00:09:29,156 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-10-12 00:09:29,157 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 134 flow [2024-10-12 00:09:29,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:09:29,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:29,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:29,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:09:29,159 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:29,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 784248788, now seen corresponding path program 1 times [2024-10-12 00:09:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576495511] [2024-10-12 00:09:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,253 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 00:09:29,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576495511] [2024-10-12 00:09:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576495511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:29,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:29,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:29,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167504418] [2024-10-12 00:09:29,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:29,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:29,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:29,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:29,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:29,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 00:09:29,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:29,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:29,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:29,356 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-10-12 00:09:29,357 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-10-12 00:09:29,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 384 events. 214/384 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1551 event pairs, 69 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 820. Up to 153 conditions per place. [2024-10-12 00:09:29,362 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-10-12 00:09:29,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 310 flow [2024-10-12 00:09:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-12 00:09:29,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-12 00:09:29,366 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 134 flow. Second operand 4 states and 75 transitions. [2024-10-12 00:09:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 310 flow [2024-10-12 00:09:29,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:29,370 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 175 flow [2024-10-12 00:09:29,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-10-12 00:09:29,371 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-12 00:09:29,372 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 175 flow [2024-10-12 00:09:29,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 00:09:29,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:29,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:29,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:09:29,373 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:29,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash 784248789, now seen corresponding path program 1 times [2024-10-12 00:09:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489937558] [2024-10-12 00:09:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,444 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 00:09:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489937558] [2024-10-12 00:09:29,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489937558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:29,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:29,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426386641] [2024-10-12 00:09:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:29,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:29,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:29,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:29,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 00:09:29,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:29,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:29,568 INFO L124 PetriNetUnfolderBase]: 278/480 cut-off events. [2024-10-12 00:09:29,569 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2024-10-12 00:09:29,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 480 events. 278/480 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1876 event pairs, 85 based on Foata normal form. 14/493 useless extension candidates. Maximal degree in co-relation 1175. Up to 175 conditions per place. [2024-10-12 00:09:29,573 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-10-12 00:09:29,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 431 flow [2024-10-12 00:09:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-12 00:09:29,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-12 00:09:29,575 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 175 flow. Second operand 4 states and 78 transitions. [2024-10-12 00:09:29,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 431 flow [2024-10-12 00:09:29,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:29,578 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 307 flow [2024-10-12 00:09:29,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-10-12 00:09:29,582 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-12 00:09:29,582 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 307 flow [2024-10-12 00:09:29,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 00:09:29,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:29,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:29,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:09:29,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:29,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1458092094, now seen corresponding path program 1 times [2024-10-12 00:09:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811431085] [2024-10-12 00:09:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,623 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 00:09:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811431085] [2024-10-12 00:09:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811431085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:29,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:29,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340830418] [2024-10-12 00:09:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:29,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:09:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:09:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:09:29,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:29,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 00:09:29,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:29,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:29,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:29,737 INFO L124 PetriNetUnfolderBase]: 278/471 cut-off events. [2024-10-12 00:09:29,737 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2024-10-12 00:09:29,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 471 events. 278/471 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1784 event pairs, 153 based on Foata normal form. 19/488 useless extension candidates. Maximal degree in co-relation 1336. Up to 387 conditions per place. [2024-10-12 00:09:29,742 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 51 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-10-12 00:09:29,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 476 flow [2024-10-12 00:09:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:09:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:09:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-12 00:09:29,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-12 00:09:29,745 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 307 flow. Second operand 3 states and 50 transitions. [2024-10-12 00:09:29,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 476 flow [2024-10-12 00:09:29,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:29,749 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 296 flow [2024-10-12 00:09:29,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2024-10-12 00:09:29,751 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-12 00:09:29,751 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 296 flow [2024-10-12 00:09:29,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 00:09:29,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:29,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:29,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:09:29,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:29,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1392733939, now seen corresponding path program 1 times [2024-10-12 00:09:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:29,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863611290] [2024-10-12 00:09:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863611290] [2024-10-12 00:09:29,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863611290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:29,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:29,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:29,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752323037] [2024-10-12 00:09:29,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:29,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:29,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:29,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:29,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:09:29,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:29,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:29,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:30,027 INFO L124 PetriNetUnfolderBase]: 251/428 cut-off events. [2024-10-12 00:09:30,027 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2024-10-12 00:09:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 428 events. 251/428 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1593 event pairs, 58 based on Foata normal form. 16/444 useless extension candidates. Maximal degree in co-relation 1192. Up to 171 conditions per place. [2024-10-12 00:09:30,032 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 49 selfloop transitions, 24 changer transitions 0/75 dead transitions. [2024-10-12 00:09:30,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 602 flow [2024-10-12 00:09:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:09:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:09:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-10-12 00:09:30,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-12 00:09:30,034 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 296 flow. Second operand 5 states and 86 transitions. [2024-10-12 00:09:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 602 flow [2024-10-12 00:09:30,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:30,039 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 406 flow [2024-10-12 00:09:30,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-10-12 00:09:30,040 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-10-12 00:09:30,040 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 406 flow [2024-10-12 00:09:30,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:09:30,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:30,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:30,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:09:30,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:30,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash 329285479, now seen corresponding path program 1 times [2024-10-12 00:09:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3975799] [2024-10-12 00:09:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:30,136 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 00:09:30,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:30,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3975799] [2024-10-12 00:09:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3975799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:30,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390192801] [2024-10-12 00:09:30,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:30,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:30,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:30,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:30,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:30,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:30,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:30,353 INFO L124 PetriNetUnfolderBase]: 306/517 cut-off events. [2024-10-12 00:09:30,354 INFO L125 PetriNetUnfolderBase]: For 1226/1226 co-relation queries the response was YES. [2024-10-12 00:09:30,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 517 events. 306/517 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2151 event pairs, 56 based on Foata normal form. 4/521 useless extension candidates. Maximal degree in co-relation 1390. Up to 173 conditions per place. [2024-10-12 00:09:30,359 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 34 changer transitions 0/84 dead transitions. [2024-10-12 00:09:30,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 758 flow [2024-10-12 00:09:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-12 00:09:30,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-10-12 00:09:30,361 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 406 flow. Second operand 6 states and 110 transitions. [2024-10-12 00:09:30,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 758 flow [2024-10-12 00:09:30,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 732 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:30,367 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 604 flow [2024-10-12 00:09:30,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2024-10-12 00:09:30,368 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2024-10-12 00:09:30,369 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 604 flow [2024-10-12 00:09:30,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:30,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:30,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:09:30,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:30,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1391436812, now seen corresponding path program 1 times [2024-10-12 00:09:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:30,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372956708] [2024-10-12 00:09:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:30,435 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 00:09:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372956708] [2024-10-12 00:09:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372956708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:30,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:30,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664467345] [2024-10-12 00:09:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:30,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:30,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:30,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:30,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:30,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:30,616 INFO L124 PetriNetUnfolderBase]: 331/555 cut-off events. [2024-10-12 00:09:30,616 INFO L125 PetriNetUnfolderBase]: For 2807/2807 co-relation queries the response was YES. [2024-10-12 00:09:30,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 555 events. 331/555 cut-off events. For 2807/2807 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2302 event pairs, 85 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 2181. Up to 188 conditions per place. [2024-10-12 00:09:30,623 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 39 changer transitions 1/92 dead transitions. [2024-10-12 00:09:30,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 1038 flow [2024-10-12 00:09:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-12 00:09:30,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-12 00:09:30,625 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 604 flow. Second operand 6 states and 99 transitions. [2024-10-12 00:09:30,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 1038 flow [2024-10-12 00:09:30,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 990 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:30,634 INFO L231 Difference]: Finished difference. Result has 62 places, 73 transitions, 858 flow [2024-10-12 00:09:30,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=858, PETRI_PLACES=62, PETRI_TRANSITIONS=73} [2024-10-12 00:09:30,635 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-10-12 00:09:30,635 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 73 transitions, 858 flow [2024-10-12 00:09:30,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:30,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:30,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:09:30,636 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:30,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631311, now seen corresponding path program 2 times [2024-10-12 00:09:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:30,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551968294] [2024-10-12 00:09:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:30,710 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 00:09:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551968294] [2024-10-12 00:09:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551968294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897330625] [2024-10-12 00:09:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:30,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:30,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 73 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:30,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:30,969 INFO L124 PetriNetUnfolderBase]: 364/639 cut-off events. [2024-10-12 00:09:30,969 INFO L125 PetriNetUnfolderBase]: For 3428/3428 co-relation queries the response was YES. [2024-10-12 00:09:30,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 639 events. 364/639 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2893 event pairs, 48 based on Foata normal form. 8/647 useless extension candidates. Maximal degree in co-relation 2602. Up to 229 conditions per place. [2024-10-12 00:09:30,976 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 55 changer transitions 1/117 dead transitions. [2024-10-12 00:09:30,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 1382 flow [2024-10-12 00:09:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-12 00:09:30,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-12 00:09:30,978 INFO L175 Difference]: Start difference. First operand has 62 places, 73 transitions, 858 flow. Second operand 8 states and 142 transitions. [2024-10-12 00:09:30,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 1382 flow [2024-10-12 00:09:30,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 1329 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:30,993 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 1065 flow [2024-10-12 00:09:30,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1065, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2024-10-12 00:09:30,994 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-10-12 00:09:30,994 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 1065 flow [2024-10-12 00:09:30,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:30,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:30,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:30,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:09:30,995 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:30,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1066695692, now seen corresponding path program 2 times [2024-10-12 00:09:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349592624] [2024-10-12 00:09:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:31,054 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 00:09:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349592624] [2024-10-12 00:09:31,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349592624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:31,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:31,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146678494] [2024-10-12 00:09:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:31,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:31,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:31,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:31,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 1065 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:31,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:31,261 INFO L124 PetriNetUnfolderBase]: 368/646 cut-off events. [2024-10-12 00:09:31,261 INFO L125 PetriNetUnfolderBase]: For 4829/4833 co-relation queries the response was YES. [2024-10-12 00:09:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 646 events. 368/646 cut-off events. For 4829/4833 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2911 event pairs, 96 based on Foata normal form. 12/657 useless extension candidates. Maximal degree in co-relation 2806. Up to 253 conditions per place. [2024-10-12 00:09:31,270 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 60 selfloop transitions, 41 changer transitions 2/105 dead transitions. [2024-10-12 00:09:31,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 1452 flow [2024-10-12 00:09:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-10-12 00:09:31,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-12 00:09:31,272 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 1065 flow. Second operand 6 states and 96 transitions. [2024-10-12 00:09:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 1452 flow [2024-10-12 00:09:31,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 1292 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:31,286 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 1095 flow [2024-10-12 00:09:31,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1095, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2024-10-12 00:09:31,288 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2024-10-12 00:09:31,288 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 1095 flow [2024-10-12 00:09:31,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:31,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:31,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 00:09:31,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:31,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1078299302, now seen corresponding path program 3 times [2024-10-12 00:09:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:31,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285810603] [2024-10-12 00:09:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:31,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:31,382 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 00:09:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285810603] [2024-10-12 00:09:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285810603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:31,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:31,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055124935] [2024-10-12 00:09:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:31,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:31,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:31,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:31,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:31,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:31,545 INFO L124 PetriNetUnfolderBase]: 352/618 cut-off events. [2024-10-12 00:09:31,545 INFO L125 PetriNetUnfolderBase]: For 4486/4490 co-relation queries the response was YES. [2024-10-12 00:09:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 618 events. 352/618 cut-off events. For 4486/4490 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2751 event pairs, 88 based on Foata normal form. 12/629 useless extension candidates. Maximal degree in co-relation 2814. Up to 196 conditions per place. [2024-10-12 00:09:31,552 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 57 selfloop transitions, 41 changer transitions 0/100 dead transitions. [2024-10-12 00:09:31,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 1365 flow [2024-10-12 00:09:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-10-12 00:09:31,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-12 00:09:31,554 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 1095 flow. Second operand 6 states and 92 transitions. [2024-10-12 00:09:31,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 1365 flow [2024-10-12 00:09:31,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 1124 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-10-12 00:09:31,572 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 908 flow [2024-10-12 00:09:31,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=908, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2024-10-12 00:09:31,573 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-10-12 00:09:31,573 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 908 flow [2024-10-12 00:09:31,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:31,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:31,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:09:31,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:31,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash 329164248, now seen corresponding path program 1 times [2024-10-12 00:09:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326192077] [2024-10-12 00:09:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:31,633 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 00:09:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326192077] [2024-10-12 00:09:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326192077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:31,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:31,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027397830] [2024-10-12 00:09:31,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:31,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:31,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:31,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:31,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:31,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 908 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:31,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:31,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:31,829 INFO L124 PetriNetUnfolderBase]: 357/626 cut-off events. [2024-10-12 00:09:31,829 INFO L125 PetriNetUnfolderBase]: For 2485/2489 co-relation queries the response was YES. [2024-10-12 00:09:31,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 626 events. 357/626 cut-off events. For 2485/2489 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2832 event pairs, 86 based on Foata normal form. 5/630 useless extension candidates. Maximal degree in co-relation 2700. Up to 188 conditions per place. [2024-10-12 00:09:31,835 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 48 changer transitions 0/116 dead transitions. [2024-10-12 00:09:31,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 116 transitions, 1352 flow [2024-10-12 00:09:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-10-12 00:09:31,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2024-10-12 00:09:31,837 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 908 flow. Second operand 8 states and 119 transitions. [2024-10-12 00:09:31,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 116 transitions, 1352 flow [2024-10-12 00:09:31,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 116 transitions, 1268 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:31,846 INFO L231 Difference]: Finished difference. Result has 71 places, 90 transitions, 1023 flow [2024-10-12 00:09:31,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1023, PETRI_PLACES=71, PETRI_TRANSITIONS=90} [2024-10-12 00:09:31,847 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-10-12 00:09:31,847 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 90 transitions, 1023 flow [2024-10-12 00:09:31,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:31,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:31,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 00:09:31,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:31,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 337328719, now seen corresponding path program 1 times [2024-10-12 00:09:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:31,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881183431] [2024-10-12 00:09:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:31,928 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 00:09:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881183431] [2024-10-12 00:09:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881183431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:31,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96744225] [2024-10-12 00:09:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:31,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:31,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:31,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:31,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:31,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 90 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:31,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:31,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:31,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:32,188 INFO L124 PetriNetUnfolderBase]: 377/677 cut-off events. [2024-10-12 00:09:32,189 INFO L125 PetriNetUnfolderBase]: For 2727/2731 co-relation queries the response was YES. [2024-10-12 00:09:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 677 events. 377/677 cut-off events. For 2727/2731 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3186 event pairs, 56 based on Foata normal form. 14/691 useless extension candidates. Maximal degree in co-relation 2829. Up to 260 conditions per place. [2024-10-12 00:09:32,195 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 58 changer transitions 1/131 dead transitions. [2024-10-12 00:09:32,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 1544 flow [2024-10-12 00:09:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-12 00:09:32,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-12 00:09:32,197 INFO L175 Difference]: Start difference. First operand has 71 places, 90 transitions, 1023 flow. Second operand 8 states and 142 transitions. [2024-10-12 00:09:32,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 1544 flow [2024-10-12 00:09:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 1475 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:32,209 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 1151 flow [2024-10-12 00:09:32,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1151, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2024-10-12 00:09:32,210 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-10-12 00:09:32,210 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 1151 flow [2024-10-12 00:09:32,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:32,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:32,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 00:09:32,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:32,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1066696022, now seen corresponding path program 2 times [2024-10-12 00:09:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002048611] [2024-10-12 00:09:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:32,261 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 00:09:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002048611] [2024-10-12 00:09:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002048611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172706390] [2024-10-12 00:09:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:32,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:32,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:32,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:32,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:32,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:32,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:32,488 INFO L124 PetriNetUnfolderBase]: 382/688 cut-off events. [2024-10-12 00:09:32,489 INFO L125 PetriNetUnfolderBase]: For 3961/3965 co-relation queries the response was YES. [2024-10-12 00:09:32,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 688 events. 382/688 cut-off events. For 3961/3965 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3263 event pairs, 96 based on Foata normal form. 10/697 useless extension candidates. Maximal degree in co-relation 2999. Up to 196 conditions per place. [2024-10-12 00:09:32,495 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 48 changer transitions 1/117 dead transitions. [2024-10-12 00:09:32,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1547 flow [2024-10-12 00:09:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-10-12 00:09:32,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-12 00:09:32,498 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 1151 flow. Second operand 8 states and 120 transitions. [2024-10-12 00:09:32,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1547 flow [2024-10-12 00:09:32,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 1420 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-12 00:09:32,513 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 1188 flow [2024-10-12 00:09:32,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2024-10-12 00:09:32,514 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-10-12 00:09:32,514 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 1188 flow [2024-10-12 00:09:32,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:32,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:32,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 00:09:32,515 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:32,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631642, now seen corresponding path program 3 times [2024-10-12 00:09:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:32,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413304528] [2024-10-12 00:09:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:32,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:32,569 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 00:09:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413304528] [2024-10-12 00:09:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413304528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218687331] [2024-10-12 00:09:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:32,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:32,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:32,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 1188 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:32,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:32,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:32,803 INFO L124 PetriNetUnfolderBase]: 370/662 cut-off events. [2024-10-12 00:09:32,804 INFO L125 PetriNetUnfolderBase]: For 3521/3525 co-relation queries the response was YES. [2024-10-12 00:09:32,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 662 events. 370/662 cut-off events. For 3521/3525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3096 event pairs, 89 based on Foata normal form. 10/671 useless extension candidates. Maximal degree in co-relation 2909. Up to 254 conditions per place. [2024-10-12 00:09:32,811 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 47 changer transitions 1/116 dead transitions. [2024-10-12 00:09:32,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 1515 flow [2024-10-12 00:09:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-10-12 00:09:32,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-10-12 00:09:32,813 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 1188 flow. Second operand 8 states and 121 transitions. [2024-10-12 00:09:32,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 1515 flow [2024-10-12 00:09:32,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 1316 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-12 00:09:32,829 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 1043 flow [2024-10-12 00:09:32,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-10-12 00:09:32,830 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-10-12 00:09:32,830 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 1043 flow [2024-10-12 00:09:32,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:32,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:32,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:09:32,831 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:32,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631641, now seen corresponding path program 2 times [2024-10-12 00:09:32,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:32,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010534735] [2024-10-12 00:09:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:32,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:32,899 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 00:09:32,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:32,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010534735] [2024-10-12 00:09:32,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010534735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:32,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:32,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:32,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819109087] [2024-10-12 00:09:32,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:32,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:32,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:32,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:32,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:32,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:32,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 1043 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:32,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:32,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:32,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:33,118 INFO L124 PetriNetUnfolderBase]: 383/703 cut-off events. [2024-10-12 00:09:33,119 INFO L125 PetriNetUnfolderBase]: For 2756/2760 co-relation queries the response was YES. [2024-10-12 00:09:33,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 703 events. 383/703 cut-off events. For 2756/2760 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3395 event pairs, 89 based on Foata normal form. 19/721 useless extension candidates. Maximal degree in co-relation 2936. Up to 301 conditions per place. [2024-10-12 00:09:33,127 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 47 changer transitions 5/112 dead transitions. [2024-10-12 00:09:33,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 112 transitions, 1394 flow [2024-10-12 00:09:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-10-12 00:09:33,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-12 00:09:33,128 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 1043 flow. Second operand 6 states and 105 transitions. [2024-10-12 00:09:33,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 112 transitions, 1394 flow [2024-10-12 00:09:33,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 1336 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:33,141 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 1066 flow [2024-10-12 00:09:33,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-10-12 00:09:33,142 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-10-12 00:09:33,142 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 1066 flow [2024-10-12 00:09:33,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:33,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:33,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:33,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 00:09:33,143 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:33,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash 329164249, now seen corresponding path program 3 times [2024-10-12 00:09:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536936156] [2024-10-12 00:09:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:33,200 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 00:09:33,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536936156] [2024-10-12 00:09:33,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536936156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:33,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204359432] [2024-10-12 00:09:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:33,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:33,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:33,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:33,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:33,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:33,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:33,426 INFO L124 PetriNetUnfolderBase]: 431/810 cut-off events. [2024-10-12 00:09:33,426 INFO L125 PetriNetUnfolderBase]: For 3089/3093 co-relation queries the response was YES. [2024-10-12 00:09:33,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 810 events. 431/810 cut-off events. For 3089/3093 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4111 event pairs, 59 based on Foata normal form. 9/819 useless extension candidates. Maximal degree in co-relation 3362. Up to 244 conditions per place. [2024-10-12 00:09:33,435 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 54 changer transitions 3/133 dead transitions. [2024-10-12 00:09:33,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 1595 flow [2024-10-12 00:09:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-12 00:09:33,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55078125 [2024-10-12 00:09:33,437 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 1066 flow. Second operand 8 states and 141 transitions. [2024-10-12 00:09:33,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 1595 flow [2024-10-12 00:09:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 1495 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:33,451 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 1107 flow [2024-10-12 00:09:33,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-10-12 00:09:33,452 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-10-12 00:09:33,452 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 1107 flow [2024-10-12 00:09:33,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:33,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:33,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:33,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 00:09:33,452 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:33,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1066161871, now seen corresponding path program 3 times [2024-10-12 00:09:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090723704] [2024-10-12 00:09:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:33,507 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 00:09:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090723704] [2024-10-12 00:09:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090723704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:33,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:33,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399997084] [2024-10-12 00:09:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:33,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:33,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:33,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 1107 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:33,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:33,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:33,742 INFO L124 PetriNetUnfolderBase]: 471/893 cut-off events. [2024-10-12 00:09:33,742 INFO L125 PetriNetUnfolderBase]: For 3627/3631 co-relation queries the response was YES. [2024-10-12 00:09:33,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 893 events. 471/893 cut-off events. For 3627/3631 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4684 event pairs, 70 based on Foata normal form. 8/901 useless extension candidates. Maximal degree in co-relation 3641. Up to 375 conditions per place. [2024-10-12 00:09:33,751 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 54 changer transitions 3/131 dead transitions. [2024-10-12 00:09:33,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1622 flow [2024-10-12 00:09:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-10-12 00:09:33,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53515625 [2024-10-12 00:09:33,754 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 1107 flow. Second operand 8 states and 137 transitions. [2024-10-12 00:09:33,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1622 flow [2024-10-12 00:09:33,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 1521 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:33,767 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 1145 flow [2024-10-12 00:09:33,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-12 00:09:33,768 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2024-10-12 00:09:33,768 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 1145 flow [2024-10-12 00:09:33,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:09:33,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:33,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:33,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 00:09:33,769 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:33,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:33,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1067155193, now seen corresponding path program 1 times [2024-10-12 00:09:33,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852955288] [2024-10-12 00:09:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852955288] [2024-10-12 00:09:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852955288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488536504] [2024-10-12 00:09:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:33,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-12 00:09:33,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 1145 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 00:09:33,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:33,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-12 00:09:33,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:33,990 INFO L124 PetriNetUnfolderBase]: 441/830 cut-off events. [2024-10-12 00:09:33,991 INFO L125 PetriNetUnfolderBase]: For 3635/3635 co-relation queries the response was YES. [2024-10-12 00:09:33,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 830 events. 441/830 cut-off events. For 3635/3635 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4268 event pairs, 105 based on Foata normal form. 16/845 useless extension candidates. Maximal degree in co-relation 3371. Up to 499 conditions per place. [2024-10-12 00:09:33,999 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 64 selfloop transitions, 42 changer transitions 0/108 dead transitions. [2024-10-12 00:09:34,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 108 transitions, 1467 flow [2024-10-12 00:09:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:09:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:09:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-12 00:09:34,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-10-12 00:09:34,001 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 1145 flow. Second operand 5 states and 77 transitions. [2024-10-12 00:09:34,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 108 transitions, 1467 flow [2024-10-12 00:09:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 1320 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-12 00:09:34,016 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 1084 flow [2024-10-12 00:09:34,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-10-12 00:09:34,017 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2024-10-12 00:09:34,017 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 1084 flow [2024-10-12 00:09:34,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 00:09:34,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:34,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:34,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 00:09:34,018 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:34,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash 544087888, now seen corresponding path program 1 times [2024-10-12 00:09:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175023913] [2024-10-12 00:09:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:34,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175023913] [2024-10-12 00:09:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175023913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789350683] [2024-10-12 00:09:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:34,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:34,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:34,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:34,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:09:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:09:34,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:34,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789350683] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:34,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:09:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2024-10-12 00:09:34,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568749892] [2024-10-12 00:09:34,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:34,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:34,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:34,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:34,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 1084 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:34,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:34,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:34,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:34,460 INFO L124 PetriNetUnfolderBase]: 480/915 cut-off events. [2024-10-12 00:09:34,460 INFO L125 PetriNetUnfolderBase]: For 3495/3495 co-relation queries the response was YES. [2024-10-12 00:09:34,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 915 events. 480/915 cut-off events. For 3495/3495 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4842 event pairs, 50 based on Foata normal form. 13/928 useless extension candidates. Maximal degree in co-relation 3728. Up to 346 conditions per place. [2024-10-12 00:09:34,471 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-10-12 00:09:34,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 1723 flow [2024-10-12 00:09:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:09:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:09:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-10-12 00:09:34,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-12 00:09:34,473 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 1084 flow. Second operand 7 states and 118 transitions. [2024-10-12 00:09:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 1723 flow [2024-10-12 00:09:34,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:34,489 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1302 flow [2024-10-12 00:09:34,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-10-12 00:09:34,490 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-10-12 00:09:34,490 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1302 flow [2024-10-12 00:09:34,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:34,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:34,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:34,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:34,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 00:09:34,691 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:34,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1640378568, now seen corresponding path program 1 times [2024-10-12 00:09:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126137524] [2024-10-12 00:09:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126137524] [2024-10-12 00:09:34,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126137524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:34,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:34,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337065251] [2024-10-12 00:09:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:34,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:34,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:34,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1302 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:34,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:34,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:34,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:34,986 INFO L124 PetriNetUnfolderBase]: 524/1010 cut-off events. [2024-10-12 00:09:34,986 INFO L125 PetriNetUnfolderBase]: For 5329/5329 co-relation queries the response was YES. [2024-10-12 00:09:34,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 1010 events. 524/1010 cut-off events. For 5329/5329 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5595 event pairs, 70 based on Foata normal form. 6/1016 useless extension candidates. Maximal degree in co-relation 4350. Up to 220 conditions per place. [2024-10-12 00:09:34,995 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 131 selfloop transitions, 45 changer transitions 5/183 dead transitions. [2024-10-12 00:09:34,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 2326 flow [2024-10-12 00:09:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-10-12 00:09:34,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2024-10-12 00:09:34,997 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1302 flow. Second operand 8 states and 143 transitions. [2024-10-12 00:09:34,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 2326 flow [2024-10-12 00:09:35,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 2281 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:35,020 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1704 flow [2024-10-12 00:09:35,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1704, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-10-12 00:09:35,020 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-10-12 00:09:35,021 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1704 flow [2024-10-12 00:09:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:35,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:35,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 00:09:35,021 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:35,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -284649751, now seen corresponding path program 1 times [2024-10-12 00:09:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026762096] [2024-10-12 00:09:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:35,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026762096] [2024-10-12 00:09:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026762096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037487531] [2024-10-12 00:09:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:35,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:35,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:35,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1704 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:35,349 INFO L124 PetriNetUnfolderBase]: 593/1140 cut-off events. [2024-10-12 00:09:35,349 INFO L125 PetriNetUnfolderBase]: For 7421/7425 co-relation queries the response was YES. [2024-10-12 00:09:35,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 1140 events. 593/1140 cut-off events. For 7421/7425 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6250 event pairs, 56 based on Foata normal form. 18/1158 useless extension candidates. Maximal degree in co-relation 5444. Up to 317 conditions per place. [2024-10-12 00:09:35,360 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 124 selfloop transitions, 88 changer transitions 3/217 dead transitions. [2024-10-12 00:09:35,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 2953 flow [2024-10-12 00:09:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:09:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:09:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-10-12 00:09:35,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-12 00:09:35,362 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1704 flow. Second operand 9 states and 144 transitions. [2024-10-12 00:09:35,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 2953 flow [2024-10-12 00:09:35,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 217 transitions, 2937 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-12 00:09:35,396 INFO L231 Difference]: Finished difference. Result has 116 places, 175 transitions, 2556 flow [2024-10-12 00:09:35,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2556, PETRI_PLACES=116, PETRI_TRANSITIONS=175} [2024-10-12 00:09:35,397 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-10-12 00:09:35,397 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 175 transitions, 2556 flow [2024-10-12 00:09:35,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:35,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:35,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 00:09:35,398 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:35,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash 7656323, now seen corresponding path program 2 times [2024-10-12 00:09:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:35,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834352258] [2024-10-12 00:09:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:35,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:35,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834352258] [2024-10-12 00:09:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834352258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:35,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:35,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:35,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456415764] [2024-10-12 00:09:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:35,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:35,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:35,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 175 transitions, 2556 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:35,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:35,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:35,723 INFO L124 PetriNetUnfolderBase]: 591/1132 cut-off events. [2024-10-12 00:09:35,723 INFO L125 PetriNetUnfolderBase]: For 10384/10388 co-relation queries the response was YES. [2024-10-12 00:09:35,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 1132 events. 591/1132 cut-off events. For 10384/10388 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6240 event pairs, 90 based on Foata normal form. 16/1148 useless extension candidates. Maximal degree in co-relation 6195. Up to 272 conditions per place. [2024-10-12 00:09:35,736 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 167 selfloop transitions, 41 changer transitions 10/220 dead transitions. [2024-10-12 00:09:35,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 220 transitions, 3412 flow [2024-10-12 00:09:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:09:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:09:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-10-12 00:09:35,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-12 00:09:35,738 INFO L175 Difference]: Start difference. First operand has 116 places, 175 transitions, 2556 flow. Second operand 7 states and 120 transitions. [2024-10-12 00:09:35,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 220 transitions, 3412 flow [2024-10-12 00:09:35,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 220 transitions, 3336 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:35,784 INFO L231 Difference]: Finished difference. Result has 122 places, 178 transitions, 2611 flow [2024-10-12 00:09:35,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2611, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2024-10-12 00:09:35,785 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2024-10-12 00:09:35,786 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 2611 flow [2024-10-12 00:09:35,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:35,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:35,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 00:09:35,786 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:35,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2112510975, now seen corresponding path program 3 times [2024-10-12 00:09:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:35,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221394872] [2024-10-12 00:09:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221394872] [2024-10-12 00:09:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221394872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:35,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841718409] [2024-10-12 00:09:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:35,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:35,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:35,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:35,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 2611 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:35,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:35,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:35,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:36,171 INFO L124 PetriNetUnfolderBase]: 634/1231 cut-off events. [2024-10-12 00:09:36,172 INFO L125 PetriNetUnfolderBase]: For 11555/11555 co-relation queries the response was YES. [2024-10-12 00:09:36,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 1231 events. 634/1231 cut-off events. For 11555/11555 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7048 event pairs, 154 based on Foata normal form. 12/1239 useless extension candidates. Maximal degree in co-relation 6825. Up to 488 conditions per place. [2024-10-12 00:09:36,186 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 174 selfloop transitions, 78 changer transitions 1/255 dead transitions. [2024-10-12 00:09:36,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 255 transitions, 3943 flow [2024-10-12 00:09:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-10-12 00:09:36,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-12 00:09:36,188 INFO L175 Difference]: Start difference. First operand has 122 places, 178 transitions, 2611 flow. Second operand 8 states and 150 transitions. [2024-10-12 00:09:36,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 255 transitions, 3943 flow [2024-10-12 00:09:36,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 3883 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:36,236 INFO L231 Difference]: Finished difference. Result has 131 places, 199 transitions, 3161 flow [2024-10-12 00:09:36,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3161, PETRI_PLACES=131, PETRI_TRANSITIONS=199} [2024-10-12 00:09:36,237 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 98 predicate places. [2024-10-12 00:09:36,237 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 199 transitions, 3161 flow [2024-10-12 00:09:36,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:36,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:36,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:36,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 00:09:36,238 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:36,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 685103370, now seen corresponding path program 2 times [2024-10-12 00:09:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692564578] [2024-10-12 00:09:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:36,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692564578] [2024-10-12 00:09:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692564578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146404675] [2024-10-12 00:09:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:36,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:36,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:36,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 199 transitions, 3161 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:36,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:36,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:36,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:36,639 INFO L124 PetriNetUnfolderBase]: 649/1261 cut-off events. [2024-10-12 00:09:36,639 INFO L125 PetriNetUnfolderBase]: For 13524/13524 co-relation queries the response was YES. [2024-10-12 00:09:36,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7485 conditions, 1261 events. 649/1261 cut-off events. For 13524/13524 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7310 event pairs, 145 based on Foata normal form. 13/1274 useless extension candidates. Maximal degree in co-relation 7366. Up to 471 conditions per place. [2024-10-12 00:09:36,654 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 152 selfloop transitions, 93 changer transitions 1/248 dead transitions. [2024-10-12 00:09:36,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 248 transitions, 4107 flow [2024-10-12 00:09:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-10-12 00:09:36,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2024-10-12 00:09:36,656 INFO L175 Difference]: Start difference. First operand has 131 places, 199 transitions, 3161 flow. Second operand 8 states and 143 transitions. [2024-10-12 00:09:36,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 248 transitions, 4107 flow [2024-10-12 00:09:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 248 transitions, 4022 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:36,709 INFO L231 Difference]: Finished difference. Result has 140 places, 212 transitions, 3637 flow [2024-10-12 00:09:36,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3637, PETRI_PLACES=140, PETRI_TRANSITIONS=212} [2024-10-12 00:09:36,713 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 107 predicate places. [2024-10-12 00:09:36,713 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 212 transitions, 3637 flow [2024-10-12 00:09:36,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:36,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:36,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:36,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 00:09:36,714 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:36,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1807385283, now seen corresponding path program 4 times [2024-10-12 00:09:36,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:36,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84892229] [2024-10-12 00:09:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:36,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:36,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84892229] [2024-10-12 00:09:36,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84892229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:36,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:36,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:36,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861084118] [2024-10-12 00:09:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:36,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:36,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:36,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:36,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 212 transitions, 3637 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:36,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:36,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:36,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:37,152 INFO L124 PetriNetUnfolderBase]: 600/1176 cut-off events. [2024-10-12 00:09:37,153 INFO L125 PetriNetUnfolderBase]: For 15209/15209 co-relation queries the response was YES. [2024-10-12 00:09:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 1176 events. 600/1176 cut-off events. For 15209/15209 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6745 event pairs, 100 based on Foata normal form. 7/1183 useless extension candidates. Maximal degree in co-relation 7232. Up to 304 conditions per place. [2024-10-12 00:09:37,169 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 171 selfloop transitions, 65 changer transitions 4/242 dead transitions. [2024-10-12 00:09:37,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 242 transitions, 4310 flow [2024-10-12 00:09:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-10-12 00:09:37,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-10-12 00:09:37,171 INFO L175 Difference]: Start difference. First operand has 140 places, 212 transitions, 3637 flow. Second operand 8 states and 134 transitions. [2024-10-12 00:09:37,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 242 transitions, 4310 flow [2024-10-12 00:09:37,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 242 transitions, 4286 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:37,231 INFO L231 Difference]: Finished difference. Result has 149 places, 209 transitions, 3770 flow [2024-10-12 00:09:37,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3770, PETRI_PLACES=149, PETRI_TRANSITIONS=209} [2024-10-12 00:09:37,234 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-10-12 00:09:37,234 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 209 transitions, 3770 flow [2024-10-12 00:09:37,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:37,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:37,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:37,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 00:09:37,235 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:37,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1784249207, now seen corresponding path program 5 times [2024-10-12 00:09:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458001084] [2024-10-12 00:09:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458001084] [2024-10-12 00:09:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458001084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:37,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821508033] [2024-10-12 00:09:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:37,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:37,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:37,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 209 transitions, 3770 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:37,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:37,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:37,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:37,652 INFO L124 PetriNetUnfolderBase]: 560/1112 cut-off events. [2024-10-12 00:09:37,652 INFO L125 PetriNetUnfolderBase]: For 16838/16838 co-relation queries the response was YES. [2024-10-12 00:09:37,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 1112 events. 560/1112 cut-off events. For 16838/16838 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6327 event pairs, 101 based on Foata normal form. 12/1124 useless extension candidates. Maximal degree in co-relation 6912. Up to 336 conditions per place. [2024-10-12 00:09:37,666 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 147 selfloop transitions, 97 changer transitions 3/249 dead transitions. [2024-10-12 00:09:37,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 4536 flow [2024-10-12 00:09:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-10-12 00:09:37,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59765625 [2024-10-12 00:09:37,667 INFO L175 Difference]: Start difference. First operand has 149 places, 209 transitions, 3770 flow. Second operand 8 states and 153 transitions. [2024-10-12 00:09:37,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 4536 flow [2024-10-12 00:09:37,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 249 transitions, 4413 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-10-12 00:09:37,730 INFO L231 Difference]: Finished difference. Result has 150 places, 203 transitions, 3809 flow [2024-10-12 00:09:37,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3809, PETRI_PLACES=150, PETRI_TRANSITIONS=203} [2024-10-12 00:09:37,731 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 117 predicate places. [2024-10-12 00:09:37,731 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 203 transitions, 3809 flow [2024-10-12 00:09:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:37,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:37,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:37,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 00:09:37,732 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:37,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 286896256, now seen corresponding path program 3 times [2024-10-12 00:09:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224105679] [2024-10-12 00:09:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224105679] [2024-10-12 00:09:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224105679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:37,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:37,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528569359] [2024-10-12 00:09:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:37,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:37,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 203 transitions, 3809 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:37,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:37,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:38,134 INFO L124 PetriNetUnfolderBase]: 515/1038 cut-off events. [2024-10-12 00:09:38,135 INFO L125 PetriNetUnfolderBase]: For 17333/17333 co-relation queries the response was YES. [2024-10-12 00:09:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 1038 events. 515/1038 cut-off events. For 17333/17333 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5895 event pairs, 127 based on Foata normal form. 13/1050 useless extension candidates. Maximal degree in co-relation 6641. Up to 490 conditions per place. [2024-10-12 00:09:38,148 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 152 selfloop transitions, 78 changer transitions 1/233 dead transitions. [2024-10-12 00:09:38,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 233 transitions, 4415 flow [2024-10-12 00:09:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-10-12 00:09:38,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2024-10-12 00:09:38,150 INFO L175 Difference]: Start difference. First operand has 150 places, 203 transitions, 3809 flow. Second operand 8 states and 145 transitions. [2024-10-12 00:09:38,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 233 transitions, 4415 flow [2024-10-12 00:09:38,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 233 transitions, 4369 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:38,215 INFO L231 Difference]: Finished difference. Result has 154 places, 200 transitions, 3883 flow [2024-10-12 00:09:38,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3883, PETRI_PLACES=154, PETRI_TRANSITIONS=200} [2024-10-12 00:09:38,216 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2024-10-12 00:09:38,217 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 200 transitions, 3883 flow [2024-10-12 00:09:38,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:38,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:38,217 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:38,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-12 00:09:38,218 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:38,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2038600562, now seen corresponding path program 4 times [2024-10-12 00:09:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116848065] [2024-10-12 00:09:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:38,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:38,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116848065] [2024-10-12 00:09:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116848065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:38,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:38,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:38,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442282676] [2024-10-12 00:09:38,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:38,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:38,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:38,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 200 transitions, 3883 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:38,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:38,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:38,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:38,556 INFO L124 PetriNetUnfolderBase]: 516/1042 cut-off events. [2024-10-12 00:09:38,557 INFO L125 PetriNetUnfolderBase]: For 19090/19094 co-relation queries the response was YES. [2024-10-12 00:09:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 1042 events. 516/1042 cut-off events. For 19090/19094 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5924 event pairs, 83 based on Foata normal form. 10/1051 useless extension candidates. Maximal degree in co-relation 6741. Up to 293 conditions per place. [2024-10-12 00:09:38,570 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 163 selfloop transitions, 60 changer transitions 4/229 dead transitions. [2024-10-12 00:09:38,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 229 transitions, 4536 flow [2024-10-12 00:09:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:09:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:09:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-10-12 00:09:38,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-12 00:09:38,572 INFO L175 Difference]: Start difference. First operand has 154 places, 200 transitions, 3883 flow. Second operand 8 states and 136 transitions. [2024-10-12 00:09:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 229 transitions, 4536 flow [2024-10-12 00:09:38,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 229 transitions, 4431 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:38,641 INFO L231 Difference]: Finished difference. Result has 159 places, 201 transitions, 3930 flow [2024-10-12 00:09:38,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3930, PETRI_PLACES=159, PETRI_TRANSITIONS=201} [2024-10-12 00:09:38,642 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 126 predicate places. [2024-10-12 00:09:38,643 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 201 transitions, 3930 flow [2024-10-12 00:09:38,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:38,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:38,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:38,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-12 00:09:38,644 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:38,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 490451348, now seen corresponding path program 5 times [2024-10-12 00:09:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503667426] [2024-10-12 00:09:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:38,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:38,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503667426] [2024-10-12 00:09:38,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503667426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:38,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:38,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36340249] [2024-10-12 00:09:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:38,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:38,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:38,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:38,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:38,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:38,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 201 transitions, 3930 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:38,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:38,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:38,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:38,908 INFO L124 PetriNetUnfolderBase]: 453/918 cut-off events. [2024-10-12 00:09:38,909 INFO L125 PetriNetUnfolderBase]: For 17599/17603 co-relation queries the response was YES. [2024-10-12 00:09:38,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6384 conditions, 918 events. 453/918 cut-off events. For 17599/17603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5035 event pairs, 83 based on Foata normal form. 10/927 useless extension candidates. Maximal degree in co-relation 6115. Up to 293 conditions per place. [2024-10-12 00:09:38,918 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 152 selfloop transitions, 35 changer transitions 9/198 dead transitions. [2024-10-12 00:09:38,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 198 transitions, 4044 flow [2024-10-12 00:09:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:09:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:09:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-10-12 00:09:38,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2024-10-12 00:09:38,920 INFO L175 Difference]: Start difference. First operand has 159 places, 201 transitions, 3930 flow. Second operand 7 states and 107 transitions. [2024-10-12 00:09:38,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 198 transitions, 4044 flow [2024-10-12 00:09:38,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 198 transitions, 3954 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:38,978 INFO L231 Difference]: Finished difference. Result has 162 places, 180 transitions, 3469 flow [2024-10-12 00:09:38,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3469, PETRI_PLACES=162, PETRI_TRANSITIONS=180} [2024-10-12 00:09:38,979 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 129 predicate places. [2024-10-12 00:09:38,979 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 180 transitions, 3469 flow [2024-10-12 00:09:38,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:38,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:38,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:38,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-12 00:09:38,980 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:38,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1409178169, now seen corresponding path program 6 times [2024-10-12 00:09:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570235359] [2024-10-12 00:09:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570235359] [2024-10-12 00:09:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570235359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:39,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:39,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290368268] [2024-10-12 00:09:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:39,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:39,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:39,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:09:39,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 180 transitions, 3469 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:39,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:39,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:09:39,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:39,252 INFO L124 PetriNetUnfolderBase]: 388/778 cut-off events. [2024-10-12 00:09:39,252 INFO L125 PetriNetUnfolderBase]: For 15353/15357 co-relation queries the response was YES. [2024-10-12 00:09:39,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5467 conditions, 778 events. 388/778 cut-off events. For 15353/15357 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4007 event pairs, 62 based on Foata normal form. 11/788 useless extension candidates. Maximal degree in co-relation 5342. Up to 235 conditions per place. [2024-10-12 00:09:39,259 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 120 selfloop transitions, 52 changer transitions 5/179 dead transitions. [2024-10-12 00:09:39,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 179 transitions, 3579 flow [2024-10-12 00:09:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:09:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:09:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-10-12 00:09:39,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-10-12 00:09:39,260 INFO L175 Difference]: Start difference. First operand has 162 places, 180 transitions, 3469 flow. Second operand 7 states and 109 transitions. [2024-10-12 00:09:39,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 179 transitions, 3579 flow [2024-10-12 00:09:39,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 179 transitions, 3389 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-12 00:09:39,311 INFO L231 Difference]: Finished difference. Result has 150 places, 163 transitions, 3037 flow [2024-10-12 00:09:39,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3037, PETRI_PLACES=150, PETRI_TRANSITIONS=163} [2024-10-12 00:09:39,312 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 117 predicate places. [2024-10-12 00:09:39,312 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 163 transitions, 3037 flow [2024-10-12 00:09:39,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 00:09:39,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:39,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:39,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-12 00:09:39,313 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:39,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash -656087056, now seen corresponding path program 1 times [2024-10-12 00:09:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:39,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378891353] [2024-10-12 00:09:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:39,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378891353] [2024-10-12 00:09:39,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378891353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104635376] [2024-10-12 00:09:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:39,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:09:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:39,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:39,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:39,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:39,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104635376] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:39,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:39,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:09:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277579881] [2024-10-12 00:09:39,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:39,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:39,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:09:39,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 163 transitions, 3037 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:39,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:39,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:09:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:42,744 INFO L124 PetriNetUnfolderBase]: 1041/2023 cut-off events. [2024-10-12 00:09:42,745 INFO L125 PetriNetUnfolderBase]: For 32903/32903 co-relation queries the response was YES. [2024-10-12 00:09:42,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13638 conditions, 2023 events. 1041/2023 cut-off events. For 32903/32903 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12684 event pairs, 52 based on Foata normal form. 45/2068 useless extension candidates. Maximal degree in co-relation 13291. Up to 352 conditions per place. [2024-10-12 00:09:42,769 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 348 changer transitions 10/565 dead transitions. [2024-10-12 00:09:42,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 565 transitions, 9582 flow [2024-10-12 00:09:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-12 00:09:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-10-12 00:09:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 672 transitions. [2024-10-12 00:09:42,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2024-10-12 00:09:42,773 INFO L175 Difference]: Start difference. First operand has 150 places, 163 transitions, 3037 flow. Second operand 76 states and 672 transitions. [2024-10-12 00:09:42,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 565 transitions, 9582 flow [2024-10-12 00:09:42,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 565 transitions, 9074 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-10-12 00:09:42,868 INFO L231 Difference]: Finished difference. Result has 219 places, 400 transitions, 7933 flow [2024-10-12 00:09:42,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=7933, PETRI_PLACES=219, PETRI_TRANSITIONS=400} [2024-10-12 00:09:42,869 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-10-12 00:09:42,869 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 400 transitions, 7933 flow [2024-10-12 00:09:42,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:42,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:42,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:42,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:09:43,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:43,075 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:43,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1782991822, now seen corresponding path program 1 times [2024-10-12 00:09:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387177817] [2024-10-12 00:09:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387177817] [2024-10-12 00:09:43,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387177817] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686206519] [2024-10-12 00:09:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:43,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:43,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:43,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:09:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:43,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:43,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:43,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686206519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:43,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:09:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741146205] [2024-10-12 00:09:43,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:43,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:43,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:09:43,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 400 transitions, 7933 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:43,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:43,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:09:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:45,499 INFO L124 PetriNetUnfolderBase]: 1148/2276 cut-off events. [2024-10-12 00:09:45,499 INFO L125 PetriNetUnfolderBase]: For 36067/36067 co-relation queries the response was YES. [2024-10-12 00:09:45,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15530 conditions, 2276 events. 1148/2276 cut-off events. For 36067/36067 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14612 event pairs, 75 based on Foata normal form. 40/2316 useless extension candidates. Maximal degree in co-relation 15156. Up to 495 conditions per place. [2024-10-12 00:09:45,519 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 320 changer transitions 18/545 dead transitions. [2024-10-12 00:09:45,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 545 transitions, 10122 flow [2024-10-12 00:09:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-12 00:09:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-12 00:09:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2024-10-12 00:09:45,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2024-10-12 00:09:45,522 INFO L175 Difference]: Start difference. First operand has 219 places, 400 transitions, 7933 flow. Second operand 55 states and 521 transitions. [2024-10-12 00:09:45,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 545 transitions, 10122 flow [2024-10-12 00:09:45,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 545 transitions, 9318 flow, removed 118 selfloop flow, removed 9 redundant places. [2024-10-12 00:09:45,655 INFO L231 Difference]: Finished difference. Result has 269 places, 410 transitions, 8069 flow [2024-10-12 00:09:45,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8069, PETRI_PLACES=269, PETRI_TRANSITIONS=410} [2024-10-12 00:09:45,656 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 236 predicate places. [2024-10-12 00:09:45,656 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 410 transitions, 8069 flow [2024-10-12 00:09:45,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:45,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:45,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:45,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:45,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:45,859 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:45,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1146239530, now seen corresponding path program 2 times [2024-10-12 00:09:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845449332] [2024-10-12 00:09:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845449332] [2024-10-12 00:09:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845449332] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609682078] [2024-10-12 00:09:45,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:45,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:09:46,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:09:46,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:46,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:46,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:46,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609682078] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:46,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:09:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258640842] [2024-10-12 00:09:46,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:46,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:46,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:09:46,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 410 transitions, 8069 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:46,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:46,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:09:46,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:49,467 INFO L124 PetriNetUnfolderBase]: 2766/5291 cut-off events. [2024-10-12 00:09:49,467 INFO L125 PetriNetUnfolderBase]: For 68790/68790 co-relation queries the response was YES. [2024-10-12 00:09:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36571 conditions, 5291 events. 2766/5291 cut-off events. For 68790/68790 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38662 event pairs, 185 based on Foata normal form. 60/5351 useless extension candidates. Maximal degree in co-relation 36207. Up to 1113 conditions per place. [2024-10-12 00:09:49,509 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 866 changer transitions 22/1169 dead transitions. [2024-10-12 00:09:49,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1169 transitions, 23108 flow [2024-10-12 00:09:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-10-12 00:09:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-10-12 00:09:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 735 transitions. [2024-10-12 00:09:49,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.267078488372093 [2024-10-12 00:09:49,512 INFO L175 Difference]: Start difference. First operand has 269 places, 410 transitions, 8069 flow. Second operand 86 states and 735 transitions. [2024-10-12 00:09:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1169 transitions, 23108 flow [2024-10-12 00:09:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1169 transitions, 22380 flow, removed 33 selfloop flow, removed 28 redundant places. [2024-10-12 00:09:49,945 INFO L231 Difference]: Finished difference. Result has 333 places, 969 transitions, 20530 flow [2024-10-12 00:09:49,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7743, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=20530, PETRI_PLACES=333, PETRI_TRANSITIONS=969} [2024-10-12 00:09:49,946 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 300 predicate places. [2024-10-12 00:09:49,946 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 969 transitions, 20530 flow [2024-10-12 00:09:49,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:49,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:49,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:49,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:09:50,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-12 00:09:50,148 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:50,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -426447328, now seen corresponding path program 2 times [2024-10-12 00:09:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430721092] [2024-10-12 00:09:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430721092] [2024-10-12 00:09:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430721092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296244626] [2024-10-12 00:09:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:50,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:50,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:50,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:09:50,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:09:50,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:50,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:50,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:50,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:50,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296244626] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:50,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:50,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:09:50,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011205825] [2024-10-12 00:09:50,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:50,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:50,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:09:50,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 969 transitions, 20530 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:50,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:50,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:09:50,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:54,443 INFO L124 PetriNetUnfolderBase]: 4961/9563 cut-off events. [2024-10-12 00:09:54,444 INFO L125 PetriNetUnfolderBase]: For 144797/144797 co-relation queries the response was YES. [2024-10-12 00:09:54,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69667 conditions, 9563 events. 4961/9563 cut-off events. For 144797/144797 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 78394 event pairs, 334 based on Foata normal form. 115/9678 useless extension candidates. Maximal degree in co-relation 68856. Up to 2072 conditions per place. [2024-10-12 00:09:54,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 533 selfloop transitions, 1316 changer transitions 49/1900 dead transitions. [2024-10-12 00:09:54,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1900 transitions, 42025 flow [2024-10-12 00:09:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-12 00:09:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-12 00:09:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 528 transitions. [2024-10-12 00:09:54,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2894736842105263 [2024-10-12 00:09:54,533 INFO L175 Difference]: Start difference. First operand has 333 places, 969 transitions, 20530 flow. Second operand 57 states and 528 transitions. [2024-10-12 00:09:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1900 transitions, 42025 flow [2024-10-12 00:09:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1900 transitions, 39516 flow, removed 276 selfloop flow, removed 13 redundant places. [2024-10-12 00:09:56,051 INFO L231 Difference]: Finished difference. Result has 402 places, 1668 transitions, 37470 flow [2024-10-12 00:09:56,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=19112, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=654, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=37470, PETRI_PLACES=402, PETRI_TRANSITIONS=1668} [2024-10-12 00:09:56,052 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 369 predicate places. [2024-10-12 00:09:56,052 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 1668 transitions, 37470 flow [2024-10-12 00:09:56,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:56,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:56,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:56,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:09:56,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-12 00:09:56,254 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:09:56,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1243887434, now seen corresponding path program 3 times [2024-10-12 00:09:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471699691] [2024-10-12 00:09:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:56,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471699691] [2024-10-12 00:09:56,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471699691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:56,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473878705] [2024-10-12 00:09:56,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:09:56,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:56,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:56,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:56,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:09:56,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 00:09:56,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:56,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:56,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:56,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473878705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:56,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:09:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827205775] [2024-10-12 00:09:56,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:56,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:56,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:09:56,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1668 transitions, 37470 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:09:56,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:56,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:09:56,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:01,635 INFO L124 PetriNetUnfolderBase]: 5080/9865 cut-off events. [2024-10-12 00:10:01,636 INFO L125 PetriNetUnfolderBase]: For 161082/161086 co-relation queries the response was YES. [2024-10-12 00:10:01,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74748 conditions, 9865 events. 5080/9865 cut-off events. For 161082/161086 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 81853 event pairs, 325 based on Foata normal form. 114/9979 useless extension candidates. Maximal degree in co-relation 74320. Up to 1813 conditions per place. [2024-10-12 00:10:01,719 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 1346 changer transitions 280/1898 dead transitions. [2024-10-12 00:10:01,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1898 transitions, 43732 flow [2024-10-12 00:10:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-12 00:10:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-10-12 00:10:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 573 transitions. [2024-10-12 00:10:01,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2633272058823529 [2024-10-12 00:10:01,722 INFO L175 Difference]: Start difference. First operand has 402 places, 1668 transitions, 37470 flow. Second operand 68 states and 573 transitions. [2024-10-12 00:10:01,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1898 transitions, 43732 flow [2024-10-12 00:10:03,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1898 transitions, 42896 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-10-12 00:10:03,809 INFO L231 Difference]: Finished difference. Result has 466 places, 1486 transitions, 35020 flow [2024-10-12 00:10:03,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=36676, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=35020, PETRI_PLACES=466, PETRI_TRANSITIONS=1486} [2024-10-12 00:10:03,812 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 433 predicate places. [2024-10-12 00:10:03,813 INFO L471 AbstractCegarLoop]: Abstraction has has 466 places, 1486 transitions, 35020 flow [2024-10-12 00:10:03,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:03,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:03,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:03,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:10:04,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-12 00:10:04,014 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:04,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash -552809678, now seen corresponding path program 4 times [2024-10-12 00:10:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984320254] [2024-10-12 00:10:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:04,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984320254] [2024-10-12 00:10:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984320254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690770252] [2024-10-12 00:10:04,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:10:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:04,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:04,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:04,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:10:04,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:10:04,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:04,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:10:04,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:04,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690770252] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:04,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:10:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089572534] [2024-10-12 00:10:04,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:04,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:10:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:10:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:10:04,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:04,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1486 transitions, 35020 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:04,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:04,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:08,154 INFO L124 PetriNetUnfolderBase]: 4144/8046 cut-off events. [2024-10-12 00:10:08,154 INFO L125 PetriNetUnfolderBase]: For 140153/140153 co-relation queries the response was YES. [2024-10-12 00:10:08,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63772 conditions, 8046 events. 4144/8046 cut-off events. For 140153/140153 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 63930 event pairs, 275 based on Foata normal form. 15/8061 useless extension candidates. Maximal degree in co-relation 63618. Up to 1496 conditions per place. [2024-10-12 00:10:08,233 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 1341 changer transitions 30/1615 dead transitions. [2024-10-12 00:10:08,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1615 transitions, 39200 flow [2024-10-12 00:10:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-12 00:10:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-12 00:10:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 419 transitions. [2024-10-12 00:10:08,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25674019607843135 [2024-10-12 00:10:08,235 INFO L175 Difference]: Start difference. First operand has 466 places, 1486 transitions, 35020 flow. Second operand 51 states and 419 transitions. [2024-10-12 00:10:08,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1615 transitions, 39200 flow [2024-10-12 00:10:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 1615 transitions, 37005 flow, removed 97 selfloop flow, removed 50 redundant places. [2024-10-12 00:10:09,677 INFO L231 Difference]: Finished difference. Result has 453 places, 1481 transitions, 35500 flow [2024-10-12 00:10:09,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=32831, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=35500, PETRI_PLACES=453, PETRI_TRANSITIONS=1481} [2024-10-12 00:10:09,679 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 420 predicate places. [2024-10-12 00:10:09,679 INFO L471 AbstractCegarLoop]: Abstraction has has 453 places, 1481 transitions, 35500 flow [2024-10-12 00:10:09,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:09,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:09,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:09,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:09,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-12 00:10:09,880 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:09,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1135971634, now seen corresponding path program 3 times [2024-10-12 00:10:09,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18351030] [2024-10-12 00:10:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:09,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:10,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18351030] [2024-10-12 00:10:10,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18351030] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:10,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652717159] [2024-10-12 00:10:10,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:10:10,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:10,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:10,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:10:10,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 00:10:10,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:10,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:10:10,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:10,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652717159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:10,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:10:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581205849] [2024-10-12 00:10:10,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:10,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:10:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:10:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:10:10,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:10,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 1481 transitions, 35500 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:10,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:10,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:10,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:13,495 INFO L124 PetriNetUnfolderBase]: 4236/8241 cut-off events. [2024-10-12 00:10:13,495 INFO L125 PetriNetUnfolderBase]: For 146077/146077 co-relation queries the response was YES. [2024-10-12 00:10:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66037 conditions, 8241 events. 4236/8241 cut-off events. For 146077/146077 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 66128 event pairs, 471 based on Foata normal form. 92/8333 useless extension candidates. Maximal degree in co-relation 65681. Up to 2507 conditions per place. [2024-10-12 00:10:13,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 573 selfloop transitions, 922 changer transitions 81/1578 dead transitions. [2024-10-12 00:10:13,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1578 transitions, 40297 flow [2024-10-12 00:10:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:10:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-12 00:10:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 190 transitions. [2024-10-12 00:10:13,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-10-12 00:10:13,567 INFO L175 Difference]: Start difference. First operand has 453 places, 1481 transitions, 35500 flow. Second operand 19 states and 190 transitions. [2024-10-12 00:10:13,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1578 transitions, 40297 flow [2024-10-12 00:10:14,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1578 transitions, 36339 flow, removed 30 selfloop flow, removed 37 redundant places. [2024-10-12 00:10:14,884 INFO L231 Difference]: Finished difference. Result has 427 places, 1467 transitions, 33399 flow [2024-10-12 00:10:14,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=31704, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=902, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=33399, PETRI_PLACES=427, PETRI_TRANSITIONS=1467} [2024-10-12 00:10:14,885 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 394 predicate places. [2024-10-12 00:10:14,886 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 1467 transitions, 33399 flow [2024-10-12 00:10:14,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:14,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:14,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:14,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:15,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-12 00:10:15,087 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:15,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash 392876716, now seen corresponding path program 4 times [2024-10-12 00:10:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:15,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357143156] [2024-10-12 00:10:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:15,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357143156] [2024-10-12 00:10:15,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357143156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:15,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048301718] [2024-10-12 00:10:15,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:10:15,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:15,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:15,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:10:15,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:10:15,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:15,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:10:15,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:15,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048301718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:15,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:10:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296947998] [2024-10-12 00:10:15,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:15,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:10:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:10:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:10:15,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:15,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1467 transitions, 33399 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:15,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:15,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:19,380 INFO L124 PetriNetUnfolderBase]: 4820/9450 cut-off events. [2024-10-12 00:10:19,380 INFO L125 PetriNetUnfolderBase]: For 153914/153914 co-relation queries the response was YES. [2024-10-12 00:10:19,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73465 conditions, 9450 events. 4820/9450 cut-off events. For 153914/153914 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 78487 event pairs, 493 based on Foata normal form. 148/9598 useless extension candidates. Maximal degree in co-relation 73147. Up to 2331 conditions per place. [2024-10-12 00:10:19,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 367 selfloop transitions, 1430 changer transitions 44/1843 dead transitions. [2024-10-12 00:10:19,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1843 transitions, 44534 flow [2024-10-12 00:10:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-12 00:10:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-10-12 00:10:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 364 transitions. [2024-10-12 00:10:19,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2774390243902439 [2024-10-12 00:10:19,489 INFO L175 Difference]: Start difference. First operand has 427 places, 1467 transitions, 33399 flow. Second operand 41 states and 364 transitions. [2024-10-12 00:10:19,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1843 transitions, 44534 flow [2024-10-12 00:10:21,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1843 transitions, 43137 flow, removed 85 selfloop flow, removed 13 redundant places. [2024-10-12 00:10:21,319 INFO L231 Difference]: Finished difference. Result has 457 places, 1703 transitions, 41122 flow [2024-10-12 00:10:21,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=32293, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=41122, PETRI_PLACES=457, PETRI_TRANSITIONS=1703} [2024-10-12 00:10:21,321 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 424 predicate places. [2024-10-12 00:10:21,322 INFO L471 AbstractCegarLoop]: Abstraction has has 457 places, 1703 transitions, 41122 flow [2024-10-12 00:10:21,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 00:10:21,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:21,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:21,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:10:21,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:21,527 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:21,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:21,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1651389436, now seen corresponding path program 5 times [2024-10-12 00:10:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:21,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223189267] [2024-10-12 00:10:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:21,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:21,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223189267] [2024-10-12 00:10:21,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223189267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:21,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089415686] [2024-10-12 00:10:21,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 00:10:21,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:21,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:21,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:10:21,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:10:21,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:21,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:10:21,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:21,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:10:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089415686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:10:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:10:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2024-10-12 00:10:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416425666] [2024-10-12 00:10:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:10:21,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 00:10:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 00:10:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-10-12 00:10:21,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1703 transitions, 41122 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 00:10:21,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:21,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:24,647 INFO L124 PetriNetUnfolderBase]: 4506/8756 cut-off events. [2024-10-12 00:10:24,648 INFO L125 PetriNetUnfolderBase]: For 160148/160148 co-relation queries the response was YES. [2024-10-12 00:10:24,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71578 conditions, 8756 events. 4506/8756 cut-off events. For 160148/160148 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 71378 event pairs, 292 based on Foata normal form. 180/8936 useless extension candidates. Maximal degree in co-relation 70989. Up to 2937 conditions per place. [2024-10-12 00:10:24,718 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 170 selfloop transitions, 1060 changer transitions 482/1714 dead transitions. [2024-10-12 00:10:24,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1714 transitions, 44471 flow [2024-10-12 00:10:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:10:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:10:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-10-12 00:10:24,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29017857142857145 [2024-10-12 00:10:24,719 INFO L175 Difference]: Start difference. First operand has 457 places, 1703 transitions, 41122 flow. Second operand 14 states and 130 transitions. [2024-10-12 00:10:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1714 transitions, 44471 flow [2024-10-12 00:10:26,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1714 transitions, 41126 flow, removed 37 selfloop flow, removed 27 redundant places. [2024-10-12 00:10:26,097 INFO L231 Difference]: Finished difference. Result has 434 places, 1218 transitions, 29178 flow [2024-10-12 00:10:26,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=37656, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=29178, PETRI_PLACES=434, PETRI_TRANSITIONS=1218} [2024-10-12 00:10:26,099 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 401 predicate places. [2024-10-12 00:10:26,099 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 1218 transitions, 29178 flow [2024-10-12 00:10:26,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 00:10:26,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:26,099 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:26,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:10:26,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-10-12 00:10:26,300 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:26,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1336570481, now seen corresponding path program 5 times [2024-10-12 00:10:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:26,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362076283] [2024-10-12 00:10:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362076283] [2024-10-12 00:10:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362076283] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605602065] [2024-10-12 00:10:26,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 00:10:26,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:26,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:26,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:26,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:10:26,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-12 00:10:26,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:26,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:10:26,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:10:26,654 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:10:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605602065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:10:26,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:10:26,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2024-10-12 00:10:26,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162269934] [2024-10-12 00:10:26,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:10:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 00:10:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:26,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 00:10:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:10:26,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:26,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1218 transitions, 29178 flow. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 00:10:26,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:26,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:28,231 INFO L124 PetriNetUnfolderBase]: 2918/5833 cut-off events. [2024-10-12 00:10:28,231 INFO L125 PetriNetUnfolderBase]: For 98422/98422 co-relation queries the response was YES. [2024-10-12 00:10:28,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50334 conditions, 5833 events. 2918/5833 cut-off events. For 98422/98422 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 45869 event pairs, 179 based on Foata normal form. 45/5878 useless extension candidates. Maximal degree in co-relation 50263. Up to 1029 conditions per place. [2024-10-12 00:10:28,299 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 138 selfloop transitions, 1156 changer transitions 158/1454 dead transitions. [2024-10-12 00:10:28,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1454 transitions, 37332 flow [2024-10-12 00:10:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:10:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:10:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-10-12 00:10:28,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-10-12 00:10:28,300 INFO L175 Difference]: Start difference. First operand has 434 places, 1218 transitions, 29178 flow. Second operand 11 states and 111 transitions. [2024-10-12 00:10:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 1454 transitions, 37332 flow [2024-10-12 00:10:29,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1454 transitions, 33355 flow, removed 33 selfloop flow, removed 21 redundant places. [2024-10-12 00:10:29,024 INFO L231 Difference]: Finished difference. Result has 379 places, 1273 transitions, 29688 flow [2024-10-12 00:10:29,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=25772, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1014, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29688, PETRI_PLACES=379, PETRI_TRANSITIONS=1273} [2024-10-12 00:10:29,025 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 346 predicate places. [2024-10-12 00:10:29,025 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 1273 transitions, 29688 flow [2024-10-12 00:10:29,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 00:10:29,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:29,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:29,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:29,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-10-12 00:10:29,226 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:29,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:29,227 INFO L85 PathProgramCache]: Analyzing trace with hash -846932117, now seen corresponding path program 6 times [2024-10-12 00:10:29,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:29,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344591406] [2024-10-12 00:10:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344591406] [2024-10-12 00:10:29,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344591406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:29,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119286047] [2024-10-12 00:10:29,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 00:10:29,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:29,294 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:29,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:10:29,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-12 00:10:29,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:29,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:10:29,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:29,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119286047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:29,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2024-10-12 00:10:29,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847092312] [2024-10-12 00:10:29,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:29,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 00:10:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:29,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 00:10:29,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-10-12 00:10:29,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:29,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1273 transitions, 29688 flow. Second operand has 29 states, 29 states have (on average 5.655172413793103) internal successors, (164), 29 states have internal predecessors, (164), 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 00:10:29,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:29,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:29,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:33,608 INFO L124 PetriNetUnfolderBase]: 4292/8590 cut-off events. [2024-10-12 00:10:33,608 INFO L125 PetriNetUnfolderBase]: For 147977/147977 co-relation queries the response was YES. [2024-10-12 00:10:33,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71794 conditions, 8590 events. 4292/8590 cut-off events. For 147977/147977 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 71407 event pairs, 111 based on Foata normal form. 150/8740 useless extension candidates. Maximal degree in co-relation 71729. Up to 1491 conditions per place. [2024-10-12 00:10:33,681 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 208 selfloop transitions, 1629 changer transitions 311/2150 dead transitions. [2024-10-12 00:10:33,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2150 transitions, 51995 flow [2024-10-12 00:10:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-10-12 00:10:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-10-12 00:10:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 673 transitions. [2024-10-12 00:10:33,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25647865853658536 [2024-10-12 00:10:33,682 INFO L175 Difference]: Start difference. First operand has 379 places, 1273 transitions, 29688 flow. Second operand 82 states and 673 transitions. [2024-10-12 00:10:33,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 2150 transitions, 51995 flow [2024-10-12 00:10:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 2150 transitions, 51174 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-10-12 00:10:35,034 INFO L231 Difference]: Finished difference. Result has 462 places, 1702 transitions, 43202 flow [2024-10-12 00:10:35,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=29123, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=43202, PETRI_PLACES=462, PETRI_TRANSITIONS=1702} [2024-10-12 00:10:35,036 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 429 predicate places. [2024-10-12 00:10:35,036 INFO L471 AbstractCegarLoop]: Abstraction has has 462 places, 1702 transitions, 43202 flow [2024-10-12 00:10:35,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.655172413793103) internal successors, (164), 29 states have internal predecessors, (164), 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 00:10:35,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:35,036 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:35,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:35,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:35,237 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:35,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1854551012, now seen corresponding path program 7 times [2024-10-12 00:10:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195561806] [2024-10-12 00:10:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195561806] [2024-10-12 00:10:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195561806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001460582] [2024-10-12 00:10:35,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 00:10:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:35,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:35,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:10:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:35,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:10:35,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:35,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001460582] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:35,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:35,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2024-10-12 00:10:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861978460] [2024-10-12 00:10:35,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:35,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 00:10:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 00:10:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-12 00:10:35,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:35,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1702 transitions, 43202 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 00:10:35,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:35,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:35,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:39,148 INFO L124 PetriNetUnfolderBase]: 5054/10272 cut-off events. [2024-10-12 00:10:39,148 INFO L125 PetriNetUnfolderBase]: For 216374/216374 co-relation queries the response was YES. [2024-10-12 00:10:39,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90937 conditions, 10272 events. 5054/10272 cut-off events. For 216374/216374 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 86481 event pairs, 108 based on Foata normal form. 187/10459 useless extension candidates. Maximal degree in co-relation 90866. Up to 2049 conditions per place. [2024-10-12 00:10:39,237 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 416 selfloop transitions, 2016 changer transitions 0/2434 dead transitions. [2024-10-12 00:10:39,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 2434 transitions, 66127 flow [2024-10-12 00:10:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-12 00:10:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-12 00:10:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 293 transitions. [2024-10-12 00:10:39,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29536290322580644 [2024-10-12 00:10:39,238 INFO L175 Difference]: Start difference. First operand has 462 places, 1702 transitions, 43202 flow. Second operand 31 states and 293 transitions. [2024-10-12 00:10:39,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 2434 transitions, 66127 flow [2024-10-12 00:10:40,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2434 transitions, 64291 flow, removed 63 selfloop flow, removed 32 redundant places. [2024-10-12 00:10:40,833 INFO L231 Difference]: Finished difference. Result has 463 places, 2261 transitions, 63941 flow [2024-10-12 00:10:40,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=41742, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=63941, PETRI_PLACES=463, PETRI_TRANSITIONS=2261} [2024-10-12 00:10:40,835 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 430 predicate places. [2024-10-12 00:10:40,835 INFO L471 AbstractCegarLoop]: Abstraction has has 463 places, 2261 transitions, 63941 flow [2024-10-12 00:10:40,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 00:10:40,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:40,835 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:40,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:41,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:41,036 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:10:41,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2088040594, now seen corresponding path program 8 times [2024-10-12 00:10:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586370251] [2024-10-12 00:10:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:10:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586370251] [2024-10-12 00:10:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586370251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029480569] [2024-10-12 00:10:41,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:10:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:41,131 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:10:41,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:10:41,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:10:41,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:10:41,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:10:41,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:41,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:41,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029480569] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:41,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2024-10-12 00:10:41,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240716671] [2024-10-12 00:10:41,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:41,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 00:10:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 00:10:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-12 00:10:41,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-12 00:10:41,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2261 transitions, 63941 flow. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 00:10:41,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:41,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-12 00:10:41,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:47,028 INFO L124 PetriNetUnfolderBase]: 6123/12389 cut-off events. [2024-10-12 00:10:47,028 INFO L125 PetriNetUnfolderBase]: For 334495/334495 co-relation queries the response was YES. [2024-10-12 00:10:47,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119161 conditions, 12389 events. 6123/12389 cut-off events. For 334495/334495 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 106466 event pairs, 87 based on Foata normal form. 164/12553 useless extension candidates. Maximal degree in co-relation 119083. Up to 2605 conditions per place. [2024-10-12 00:10:47,184 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 422 selfloop transitions, 2376 changer transitions 0/2800 dead transitions. [2024-10-12 00:10:47,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2800 transitions, 83104 flow [2024-10-12 00:10:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-12 00:10:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-12 00:10:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 328 transitions. [2024-10-12 00:10:47,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29285714285714287 [2024-10-12 00:10:47,186 INFO L175 Difference]: Start difference. First operand has 463 places, 2261 transitions, 63941 flow. Second operand 35 states and 328 transitions. [2024-10-12 00:10:47,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2800 transitions, 83104 flow