./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/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:40:10,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:40:10,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:40:10,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:40:10,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:40:10,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:40:10,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:40:10,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:40:10,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:40:10,971 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:40:10,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:40:10,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:40:10,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:40:10,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:40:10,973 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:40:10,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:40:10,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:40:10,974 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:40:10,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:40:10,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:40:10,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:40:10,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:40:10,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:40:10,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:40:10,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:40:10,977 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:40:10,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:40:10,977 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:40:10,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:40:10,977 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:40:10,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:40:10,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:40:10,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:40:10,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:40:10,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:40:10,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:40:10,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:40:10,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:40:10,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:40:10,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:40:10,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:40:10,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:40:10,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:40:10,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:40:10,981 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad [2024-10-24 23:40:11,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:40:11,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:40:11,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:40:11,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:40:11,284 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:40:11,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-24 23:40:12,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:40:12,868 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:40:12,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-24 23:40:12,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68182faf7/8f26077ed5cd4057a1a654806262acd4/FLAGc55105e75 [2024-10-24 23:40:13,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68182faf7/8f26077ed5cd4057a1a654806262acd4 [2024-10-24 23:40:13,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:40:13,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:40:13,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:40:13,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:40:13,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:40:13,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5039e738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13, skipping insertion in model container [2024-10-24 23:40:13,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:40:13,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:40:13,517 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:40:13,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:40:13,554 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:40:13,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13 WrapperNode [2024-10-24 23:40:13,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:40:13,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:40:13,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:40:13,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:40:13,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,590 INFO L138 Inliner]: procedures = 21, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-24 23:40:13,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:40:13,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:40:13,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:40:13,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:40:13,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,616 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]. [2024-10-24 23:40:13,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:40:13,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:40:13,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:40:13,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:40:13,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (1/1) ... [2024-10-24 23:40:13,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:40:13,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:13,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:40:13,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:40:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:40:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:40:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:40:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:40:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:40:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:40:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:40:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:40:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:40:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:40:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:40:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:40:13,727 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:40:13,852 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:40:13,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:40:14,129 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:40:14,133 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:40:14,359 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:40:14,363 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 23:40:14,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:14 BoogieIcfgContainer [2024-10-24 23:40:14,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:40:14,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:40:14,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:40:14,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:40:14,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:40:13" (1/3) ... [2024-10-24 23:40:14,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da47b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:14, skipping insertion in model container [2024-10-24 23:40:14,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:13" (2/3) ... [2024-10-24 23:40:14,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da47b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:14, skipping insertion in model container [2024-10-24 23:40:14,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:14" (3/3) ... [2024-10-24 23:40:14,373 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-10-24 23:40:14,389 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:40:14,389 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 23:40:14,389 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:40:14,446 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:40:14,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 111 flow [2024-10-24 23:40:14,507 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-10-24 23:40:14,507 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:40:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 4/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-10-24 23:40:14,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 45 transitions, 111 flow [2024-10-24 23:40:14,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 39 transitions, 90 flow [2024-10-24 23:40:14,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:40:14,530 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;@9565550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:40:14,531 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-24 23:40:14,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:40:14,543 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-24 23:40:14,543 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:40:14,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:14,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:14,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:14,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash -512190440, now seen corresponding path program 1 times [2024-10-24 23:40:14,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842551876] [2024-10-24 23:40:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:14,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:14,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842551876] [2024-10-24 23:40:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842551876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353390222] [2024-10-24 23:40:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:14,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:14,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:14,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:14,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 23:40:14,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:14,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:14,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:15,333 INFO L124 PetriNetUnfolderBase]: 1263/2136 cut-off events. [2024-10-24 23:40:15,335 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-24 23:40:15,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 2136 events. 1263/2136 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13846 event pairs, 358 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3876. Up to 994 conditions per place. [2024-10-24 23:40:15,362 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-10-24 23:40:15,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 213 flow [2024-10-24 23:40:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-24 23:40:15,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-24 23:40:15,377 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 90 flow. Second operand 3 states and 101 transitions. [2024-10-24 23:40:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 213 flow [2024-10-24 23:40:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:40:15,388 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 144 flow [2024-10-24 23:40:15,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-10-24 23:40:15,396 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-24 23:40:15,396 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 144 flow [2024-10-24 23:40:15,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 23:40:15,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:15,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:15,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:40:15,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:15,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -512190439, now seen corresponding path program 1 times [2024-10-24 23:40:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803170284] [2024-10-24 23:40:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:15,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:15,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803170284] [2024-10-24 23:40:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803170284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495948325] [2024-10-24 23:40:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:15,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:15,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:15,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 23:40:15,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:15,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:15,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:15,861 INFO L124 PetriNetUnfolderBase]: 1974/3284 cut-off events. [2024-10-24 23:40:15,861 INFO L125 PetriNetUnfolderBase]: For 2128/2128 co-relation queries the response was YES. [2024-10-24 23:40:15,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3284 events. 1974/3284 cut-off events. For 2128/2128 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20164 event pairs, 358 based on Foata normal form. 194/2998 useless extension candidates. Maximal degree in co-relation 4359. Up to 1653 conditions per place. [2024-10-24 23:40:15,888 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 41 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-24 23:40:15,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 303 flow [2024-10-24 23:40:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-24 23:40:15,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-24 23:40:15,891 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 144 flow. Second operand 3 states and 101 transitions. [2024-10-24 23:40:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 303 flow [2024-10-24 23:40:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:15,905 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 206 flow [2024-10-24 23:40:15,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-10-24 23:40:15,906 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-24 23:40:15,906 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 206 flow [2024-10-24 23:40:15,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 23:40:15,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:15,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:40:15,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1466962396, now seen corresponding path program 1 times [2024-10-24 23:40:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909831169] [2024-10-24 23:40:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909831169] [2024-10-24 23:40:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909831169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:16,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:16,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374165556] [2024-10-24 23:40:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:16,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:16,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:16,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-24 23:40:16,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 23:40:16,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:16,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-24 23:40:16,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:16,505 INFO L124 PetriNetUnfolderBase]: 2661/4090 cut-off events. [2024-10-24 23:40:16,505 INFO L125 PetriNetUnfolderBase]: For 3621/4675 co-relation queries the response was YES. [2024-10-24 23:40:16,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11337 conditions, 4090 events. 2661/4090 cut-off events. For 3621/4675 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24437 event pairs, 756 based on Foata normal form. 4/3591 useless extension candidates. Maximal degree in co-relation 9341. Up to 1838 conditions per place. [2024-10-24 23:40:16,534 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 58 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-24 23:40:16,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 425 flow [2024-10-24 23:40:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-24 23:40:16,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-10-24 23:40:16,536 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 206 flow. Second operand 3 states and 92 transitions. [2024-10-24 23:40:16,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 425 flow [2024-10-24 23:40:16,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:16,542 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 214 flow [2024-10-24 23:40:16,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-10-24 23:40:16,543 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-24 23:40:16,544 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 214 flow [2024-10-24 23:40:16,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 23:40:16,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:16,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:16,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:40:16,544 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:16,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash -412517145, now seen corresponding path program 1 times [2024-10-24 23:40:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597018204] [2024-10-24 23:40:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597018204] [2024-10-24 23:40:16,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597018204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42210226] [2024-10-24 23:40:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:16,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:16,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:40:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:16,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:16,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:16,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42210226] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:16,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:16,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:40:16,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259401467] [2024-10-24 23:40:16,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:16,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:40:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:40:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:40:16,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:16,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-24 23:40:16,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:16,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:16,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:17,644 INFO L124 PetriNetUnfolderBase]: 4322/7547 cut-off events. [2024-10-24 23:40:17,644 INFO L125 PetriNetUnfolderBase]: For 5328/5328 co-relation queries the response was YES. [2024-10-24 23:40:17,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19658 conditions, 7547 events. 4322/7547 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52148 event pairs, 125 based on Foata normal form. 260/7249 useless extension candidates. Maximal degree in co-relation 17802. Up to 2051 conditions per place. [2024-10-24 23:40:17,716 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 85 selfloop transitions, 38 changer transitions 0/141 dead transitions. [2024-10-24 23:40:17,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 141 transitions, 783 flow [2024-10-24 23:40:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:40:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:40:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-24 23:40:17,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-24 23:40:17,719 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 214 flow. Second operand 7 states and 252 transitions. [2024-10-24 23:40:17,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 141 transitions, 783 flow [2024-10-24 23:40:17,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 141 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:17,728 INFO L231 Difference]: Finished difference. Result has 57 places, 89 transitions, 604 flow [2024-10-24 23:40:17,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=57, PETRI_TRANSITIONS=89} [2024-10-24 23:40:17,729 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-24 23:40:17,730 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 89 transitions, 604 flow [2024-10-24 23:40:17,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-24 23:40:17,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:17,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:17,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:40:17,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:17,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:17,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1645265699, now seen corresponding path program 1 times [2024-10-24 23:40:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:17,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852941067] [2024-10-24 23:40:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852941067] [2024-10-24 23:40:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852941067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469089535] [2024-10-24 23:40:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:18,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:18,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:18,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-24 23:40:18,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 89 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 23:40:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:18,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-24 23:40:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:18,968 INFO L124 PetriNetUnfolderBase]: 5708/9090 cut-off events. [2024-10-24 23:40:18,969 INFO L125 PetriNetUnfolderBase]: For 23820/23820 co-relation queries the response was YES. [2024-10-24 23:40:18,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30194 conditions, 9090 events. 5708/9090 cut-off events. For 23820/23820 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 61843 event pairs, 1606 based on Foata normal form. 0/8283 useless extension candidates. Maximal degree in co-relation 14725. Up to 4064 conditions per place. [2024-10-24 23:40:19,039 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 102 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-10-24 23:40:19,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 120 transitions, 1037 flow [2024-10-24 23:40:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-24 23:40:19,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:40:19,041 INFO L175 Difference]: Start difference. First operand has 57 places, 89 transitions, 604 flow. Second operand 3 states and 90 transitions. [2024-10-24 23:40:19,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 120 transitions, 1037 flow [2024-10-24 23:40:19,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 1025 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-24 23:40:19,079 INFO L231 Difference]: Finished difference. Result has 61 places, 86 transitions, 577 flow [2024-10-24 23:40:19,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=61, PETRI_TRANSITIONS=86} [2024-10-24 23:40:19,082 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-24 23:40:19,083 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 86 transitions, 577 flow [2024-10-24 23:40:19,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 23:40:19,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:19,083 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:19,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:40:19,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:19,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093130, now seen corresponding path program 1 times [2024-10-24 23:40:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354237826] [2024-10-24 23:40:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354237826] [2024-10-24 23:40:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354237826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:19,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:19,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533993411] [2024-10-24 23:40:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:19,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:19,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:19,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:19,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 86 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 23:40:19,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:19,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:19,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:19,779 INFO L124 PetriNetUnfolderBase]: 3147/5335 cut-off events. [2024-10-24 23:40:19,780 INFO L125 PetriNetUnfolderBase]: For 20346/20346 co-relation queries the response was YES. [2024-10-24 23:40:19,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 5335 events. 3147/5335 cut-off events. For 20346/20346 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37804 event pairs, 1620 based on Foata normal form. 338/4880 useless extension candidates. Maximal degree in co-relation 9988. Up to 4322 conditions per place. [2024-10-24 23:40:19,834 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 53 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-10-24 23:40:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 579 flow [2024-10-24 23:40:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-24 23:40:19,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-24 23:40:19,836 INFO L175 Difference]: Start difference. First operand has 61 places, 86 transitions, 577 flow. Second operand 3 states and 80 transitions. [2024-10-24 23:40:19,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 579 flow [2024-10-24 23:40:19,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:19,852 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 467 flow [2024-10-24 23:40:19,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2024-10-24 23:40:19,854 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-24 23:40:19,854 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 467 flow [2024-10-24 23:40:19,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 23:40:19,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:19,855 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:19,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:40:19,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:19,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093096, now seen corresponding path program 1 times [2024-10-24 23:40:19,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113224291] [2024-10-24 23:40:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:19,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113224291] [2024-10-24 23:40:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113224291] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176154304] [2024-10-24 23:40:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:19,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:19,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:19,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:19,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:40:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:20,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:20,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:20,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176154304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:20,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 2] total 5 [2024-10-24 23:40:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420268551] [2024-10-24 23:40:20,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:20,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:40:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:40:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:40:20,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:20,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 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) [2024-10-24 23:40:20,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:20,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:20,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:21,464 INFO L124 PetriNetUnfolderBase]: 7236/14419 cut-off events. [2024-10-24 23:40:21,464 INFO L125 PetriNetUnfolderBase]: For 42618/42618 co-relation queries the response was YES. [2024-10-24 23:40:21,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44938 conditions, 14419 events. 7236/14419 cut-off events. For 42618/42618 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 122826 event pairs, 215 based on Foata normal form. 738/14144 useless extension candidates. Maximal degree in co-relation 44918. Up to 3430 conditions per place. [2024-10-24 23:40:21,585 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 110 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-10-24 23:40:21,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1453 flow [2024-10-24 23:40:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:40:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:40:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-10-24 23:40:21,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2024-10-24 23:40:21,587 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 467 flow. Second operand 7 states and 241 transitions. [2024-10-24 23:40:21,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1453 flow [2024-10-24 23:40:21,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 182 transitions, 1452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:21,652 INFO L231 Difference]: Finished difference. Result has 68 places, 117 transitions, 1168 flow [2024-10-24 23:40:21,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1168, PETRI_PLACES=68, PETRI_TRANSITIONS=117} [2024-10-24 23:40:21,653 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-10-24 23:40:21,653 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 117 transitions, 1168 flow [2024-10-24 23:40:21,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 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) [2024-10-24 23:40:21,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:21,654 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:21,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:40:21,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-24 23:40:21,855 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:21,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:21,856 INFO L85 PathProgramCache]: Analyzing trace with hash -486675324, now seen corresponding path program 1 times [2024-10-24 23:40:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:21,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205355830] [2024-10-24 23:40:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:21,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205355830] [2024-10-24 23:40:21,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205355830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722682447] [2024-10-24 23:40:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:21,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:21,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:21,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:40:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:22,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:22,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:22,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722682447] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:22,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:22,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-24 23:40:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027954578] [2024-10-24 23:40:22,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:22,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 23:40:22,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 23:40:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-24 23:40:22,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:22,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 117 transitions, 1168 flow. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-24 23:40:22,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:22,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:22,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:26,827 INFO L124 PetriNetUnfolderBase]: 23078/46383 cut-off events. [2024-10-24 23:40:26,827 INFO L125 PetriNetUnfolderBase]: For 345814/345814 co-relation queries the response was YES. [2024-10-24 23:40:27,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162303 conditions, 46383 events. 23078/46383 cut-off events. For 345814/345814 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 459748 event pairs, 457 based on Foata normal form. 5582/48384 useless extension candidates. Maximal degree in co-relation 162278. Up to 7197 conditions per place. [2024-10-24 23:40:27,460 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 189 selfloop transitions, 188 changer transitions 0/397 dead transitions. [2024-10-24 23:40:27,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 397 transitions, 4416 flow [2024-10-24 23:40:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:40:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:40:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 393 transitions. [2024-10-24 23:40:27,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.793939393939394 [2024-10-24 23:40:27,462 INFO L175 Difference]: Start difference. First operand has 68 places, 117 transitions, 1168 flow. Second operand 11 states and 393 transitions. [2024-10-24 23:40:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 397 transitions, 4416 flow [2024-10-24 23:40:27,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 397 transitions, 4129 flow, removed 142 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:27,992 INFO L231 Difference]: Finished difference. Result has 85 places, 286 transitions, 3961 flow [2024-10-24 23:40:27,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3961, PETRI_PLACES=85, PETRI_TRANSITIONS=286} [2024-10-24 23:40:27,995 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-10-24 23:40:27,995 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 3961 flow [2024-10-24 23:40:27,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-24 23:40:27,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:27,996 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:28,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:40:28,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:28,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:28,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -449800263, now seen corresponding path program 1 times [2024-10-24 23:40:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292282118] [2024-10-24 23:40:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292282118] [2024-10-24 23:40:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292282118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564890284] [2024-10-24 23:40:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:28,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:28,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:40:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:28,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:28,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:28,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564890284] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:28,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 7 [2024-10-24 23:40:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172106269] [2024-10-24 23:40:28,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:28,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:40:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:40:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:40:28,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:28,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 286 transitions, 3961 flow. Second operand has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-24 23:40:28,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:28,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:28,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:41,616 INFO L124 PetriNetUnfolderBase]: 51537/102787 cut-off events. [2024-10-24 23:40:41,616 INFO L125 PetriNetUnfolderBase]: For 1155304/1155304 co-relation queries the response was YES. [2024-10-24 23:40:42,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431736 conditions, 102787 events. 51537/102787 cut-off events. For 1155304/1155304 co-relation queries the response was YES. Maximal size of possible extension queue 2881. Compared 1117506 event pairs, 1131 based on Foata normal form. 5404/100359 useless extension candidates. Maximal degree in co-relation 431702. Up to 17078 conditions per place. [2024-10-24 23:40:42,653 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 286 selfloop transitions, 447 changer transitions 0/753 dead transitions. [2024-10-24 23:40:42,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 753 transitions, 11557 flow [2024-10-24 23:40:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:40:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:40:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-10-24 23:40:42,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782716049382716 [2024-10-24 23:40:42,655 INFO L175 Difference]: Start difference. First operand has 85 places, 286 transitions, 3961 flow. Second operand 9 states and 317 transitions. [2024-10-24 23:40:42,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 753 transitions, 11557 flow [2024-10-24 23:40:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 753 transitions, 10804 flow, removed 375 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:50,232 INFO L231 Difference]: Finished difference. Result has 98 places, 646 transitions, 11041 flow [2024-10-24 23:40:50,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11041, PETRI_PLACES=98, PETRI_TRANSITIONS=646} [2024-10-24 23:40:50,234 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-10-24 23:40:50,234 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 646 transitions, 11041 flow [2024-10-24 23:40:50,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-24 23:40:50,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:50,235 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:50,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:40:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:50,436 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:40:50,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 207178366, now seen corresponding path program 1 times [2024-10-24 23:40:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721184339] [2024-10-24 23:40:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:50,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:50,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721184339] [2024-10-24 23:40:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721184339] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300612148] [2024-10-24 23:40:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:50,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:50,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:50,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:50,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:40:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:50,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:40:50,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:50,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300612148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:50,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-24 23:40:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242961486] [2024-10-24 23:40:50,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:50,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:40:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:40:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:40:50,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-24 23:40:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 646 transitions, 11041 flow. Second operand has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 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) [2024-10-24 23:40:50,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-24 23:40:50,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand