./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/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:07:54,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:07:54,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:07:54,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:07:54,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:07:54,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:07:54,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:07:54,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:07:54,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:07:54,512 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:07:54,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:07:54,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:07:54,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:07:54,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:07:54,515 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:07:54,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:07:54,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:07:54,520 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:07:54,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:07:54,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:07:54,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:07:54,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:07:54,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:07:54,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:07:54,522 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:07:54,523 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:07:54,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:07:54,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:07:54,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:07:54,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:07:54,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:07:54,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:07:54,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:07:54,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:07:54,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:07:54,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:07:54,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:07:54,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:07:54,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:07:54,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:07:54,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:07:54,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:07:54,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:07:54,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:07:54,531 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-10-12 00:07:54,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:07:54,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:07:54,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:07:54,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:07:54,910 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:07:54,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-10-12 00:07:56,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:07:56,962 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:07:56,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-10-12 00:07:56,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea9953f83/b0497c28935f49898461c0fde80d731f/FLAG2e60e1c4d [2024-10-12 00:07:56,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea9953f83/b0497c28935f49898461c0fde80d731f [2024-10-12 00:07:57,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:07:57,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:07:57,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:07:57,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:07:57,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:07:57,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e7bc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57, skipping insertion in model container [2024-10-12 00:07:57,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:07:57,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:07:57,277 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:07:57,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:07:57,315 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:07:57,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57 WrapperNode [2024-10-12 00:07:57,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:07:57,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:07:57,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:07:57,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:07:57,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,358 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-10-12 00:07:57,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:07:57,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:07:57,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:07:57,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:07:57,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,386 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 00:07:57,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:07:57,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:07:57,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:07:57,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:07:57,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (1/1) ... [2024-10-12 00:07:57,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:07:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:57,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:07:57,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:07:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:07:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:07:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:07:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:07:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:07:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:07:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:07:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:07:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:07:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:07:57,583 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:07:57,689 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:07:57,691 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:07:57,941 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:07:57,941 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:07:58,145 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:07:58,147 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 00:07:58,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:07:58 BoogieIcfgContainer [2024-10-12 00:07:58,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:07:58,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:07:58,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:07:58,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:07:58,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:07:57" (1/3) ... [2024-10-12 00:07:58,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bd279e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:07:58, skipping insertion in model container [2024-10-12 00:07:58,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:57" (2/3) ... [2024-10-12 00:07:58,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bd279e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:07:58, skipping insertion in model container [2024-10-12 00:07:58,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:07:58" (3/3) ... [2024-10-12 00:07:58,165 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-10-12 00:07:58,199 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:07:58,203 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-12 00:07:58,203 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:07:58,266 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:07:58,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2024-10-12 00:07:58,334 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-12 00:07:58,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:07:58,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 65 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-12 00:07:58,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2024-10-12 00:07:58,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2024-10-12 00:07:58,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:07:58,361 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;@347bfccf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:07:58,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-12 00:07:58,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:07:58,367 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-10-12 00:07:58,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:07:58,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:58,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:07:58,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:58,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash 261275040, now seen corresponding path program 1 times [2024-10-12 00:07:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:58,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561189086] [2024-10-12 00:07:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561189086] [2024-10-12 00:07:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561189086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:07:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534974899] [2024-10-12 00:07:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:58,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:58,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:07:58,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:58,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:58,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:07:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:58,805 INFO L124 PetriNetUnfolderBase]: 143/294 cut-off events. [2024-10-12 00:07:58,805 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-12 00:07:58,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 294 events. 143/294 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1236 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 517. Up to 191 conditions per place. [2024-10-12 00:07:58,810 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 23 selfloop transitions, 2 changer transitions 2/33 dead transitions. [2024-10-12 00:07:58,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2024-10-12 00:07:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-10-12 00:07:58,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-12 00:07:58,827 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 58 transitions. [2024-10-12 00:07:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2024-10-12 00:07:58,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:07:58,841 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2024-10-12 00:07:58,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-10-12 00:07:58,850 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-10-12 00:07:58,851 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2024-10-12 00:07:58,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:58,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:58,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:58,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:07:58,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:58,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1977220323, now seen corresponding path program 1 times [2024-10-12 00:07:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829743269] [2024-10-12 00:07:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829743269] [2024-10-12 00:07:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829743269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:58,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:58,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:07:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691404853] [2024-10-12 00:07:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:58,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:07:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:07:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:07:58,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-12 00:07:58,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-12 00:07:58,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:59,249 INFO L124 PetriNetUnfolderBase]: 243/472 cut-off events. [2024-10-12 00:07:59,250 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-10-12 00:07:59,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 472 events. 243/472 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2216 event pairs, 111 based on Foata normal form. 14/401 useless extension candidates. Maximal degree in co-relation 535. Up to 337 conditions per place. [2024-10-12 00:07:59,257 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 3 changer transitions 1/46 dead transitions. [2024-10-12 00:07:59,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 216 flow [2024-10-12 00:07:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-10-12 00:07:59,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-10-12 00:07:59,260 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 65 transitions. [2024-10-12 00:07:59,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 216 flow [2024-10-12 00:07:59,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:59,261 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 94 flow [2024-10-12 00:07:59,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-12 00:07:59,264 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-12 00:07:59,264 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 94 flow [2024-10-12 00:07:59,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:59,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:59,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:07:59,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:59,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 888651546, now seen corresponding path program 1 times [2024-10-12 00:07:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968376168] [2024-10-12 00:07:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968376168] [2024-10-12 00:07:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968376168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679735271] [2024-10-12 00:07:59,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:59,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:59,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:07:59,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:59,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:07:59,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:59,414 INFO L124 PetriNetUnfolderBase]: 130/254 cut-off events. [2024-10-12 00:07:59,415 INFO L125 PetriNetUnfolderBase]: For 87/106 co-relation queries the response was YES. [2024-10-12 00:07:59,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 254 events. 130/254 cut-off events. For 87/106 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1087 event pairs, 101 based on Foata normal form. 7/216 useless extension candidates. Maximal degree in co-relation 393. Up to 224 conditions per place. [2024-10-12 00:07:59,420 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-10-12 00:07:59,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2024-10-12 00:07:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-12 00:07:59,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-10-12 00:07:59,423 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 94 flow. Second operand 3 states and 42 transitions. [2024-10-12 00:07:59,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2024-10-12 00:07:59,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:59,427 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 90 flow [2024-10-12 00:07:59,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-10-12 00:07:59,428 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-12 00:07:59,431 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 90 flow [2024-10-12 00:07:59,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:59,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:59,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:07:59,432 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:59,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1737602779, now seen corresponding path program 1 times [2024-10-12 00:07:59,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:59,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933943697] [2024-10-12 00:07:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:59,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:59,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933943697] [2024-10-12 00:07:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933943697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:59,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:59,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503145528] [2024-10-12 00:07:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:59,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:59,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:59,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:07:59,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:59,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:07:59,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:59,672 INFO L124 PetriNetUnfolderBase]: 180/347 cut-off events. [2024-10-12 00:07:59,673 INFO L125 PetriNetUnfolderBase]: For 111/148 co-relation queries the response was YES. [2024-10-12 00:07:59,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 347 events. 180/347 cut-off events. For 111/148 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1587 event pairs, 101 based on Foata normal form. 26/322 useless extension candidates. Maximal degree in co-relation 821. Up to 225 conditions per place. [2024-10-12 00:07:59,678 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 29 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-10-12 00:07:59,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 193 flow [2024-10-12 00:07:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-10-12 00:07:59,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-10-12 00:07:59,684 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 90 flow. Second operand 3 states and 53 transitions. [2024-10-12 00:07:59,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 193 flow [2024-10-12 00:07:59,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:59,686 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 103 flow [2024-10-12 00:07:59,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-10-12 00:07:59,686 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-10-12 00:07:59,687 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 103 flow [2024-10-12 00:07:59,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:59,689 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:59,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:07:59,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:59,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2105536448, now seen corresponding path program 1 times [2024-10-12 00:07:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149255071] [2024-10-12 00:07:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149255071] [2024-10-12 00:07:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149255071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:59,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867926608] [2024-10-12 00:07:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:59,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:59,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:59,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:07:59,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:59,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:07:59,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:59,852 INFO L124 PetriNetUnfolderBase]: 157/301 cut-off events. [2024-10-12 00:07:59,853 INFO L125 PetriNetUnfolderBase]: For 179/216 co-relation queries the response was YES. [2024-10-12 00:07:59,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 301 events. 157/301 cut-off events. For 179/216 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1305 event pairs, 126 based on Foata normal form. 13/281 useless extension candidates. Maximal degree in co-relation 796. Up to 269 conditions per place. [2024-10-12 00:07:59,856 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-10-12 00:07:59,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 137 flow [2024-10-12 00:07:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-10-12 00:07:59,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-10-12 00:07:59,861 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 103 flow. Second operand 3 states and 41 transitions. [2024-10-12 00:07:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 137 flow [2024-10-12 00:07:59,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:59,864 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2024-10-12 00:07:59,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-10-12 00:07:59,866 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-10-12 00:07:59,867 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2024-10-12 00:07:59,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:59,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:59,868 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:59,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:07:59,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:07:59,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2105536447, now seen corresponding path program 1 times [2024-10-12 00:07:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317899691] [2024-10-12 00:07:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:59,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:59,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317899691] [2024-10-12 00:07:59,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317899691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:59,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871216623] [2024-10-12 00:07:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:59,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:59,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:08:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:00,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:00,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:00,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:00,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871216623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:00,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:00,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-12 00:08:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348227675] [2024-10-12 00:08:00,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:00,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:08:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:08:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:08:00,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:00,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:00,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:00,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:00,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:00,440 INFO L124 PetriNetUnfolderBase]: 406/1009 cut-off events. [2024-10-12 00:08:00,441 INFO L125 PetriNetUnfolderBase]: For 411/421 co-relation queries the response was YES. [2024-10-12 00:08:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 1009 events. 406/1009 cut-off events. For 411/421 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5758 event pairs, 37 based on Foata normal form. 17/969 useless extension candidates. Maximal degree in co-relation 2428. Up to 187 conditions per place. [2024-10-12 00:08:00,451 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 61 selfloop transitions, 15 changer transitions 2/85 dead transitions. [2024-10-12 00:08:00,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 85 transitions, 470 flow [2024-10-12 00:08:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:08:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:08:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-10-12 00:08:00,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6502463054187192 [2024-10-12 00:08:00,458 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 7 states and 132 transitions. [2024-10-12 00:08:00,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 85 transitions, 470 flow [2024-10-12 00:08:00,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:00,463 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 248 flow [2024-10-12 00:08:00,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-12 00:08:00,466 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-10-12 00:08:00,467 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 248 flow [2024-10-12 00:08:00,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:00,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:00,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:00,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:00,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:00,669 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:00,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 678877447, now seen corresponding path program 1 times [2024-10-12 00:08:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:00,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506176055] [2024-10-12 00:08:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:00,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:00,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506176055] [2024-10-12 00:08:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506176055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184579640] [2024-10-12 00:08:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:00,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:00,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:00,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:00,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:08:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:00,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:00,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:00,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184579640] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:08:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2024-10-12 00:08:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857048313] [2024-10-12 00:08:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:00,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:08:00,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:00,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:00,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:00,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:00,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:01,049 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2024-10-12 00:08:01,049 INFO L125 PetriNetUnfolderBase]: For 1473/1534 co-relation queries the response was YES. [2024-10-12 00:08:01,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 768 events. 358/768 cut-off events. For 1473/1534 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3922 event pairs, 68 based on Foata normal form. 11/761 useless extension candidates. Maximal degree in co-relation 2329. Up to 510 conditions per place. [2024-10-12 00:08:01,057 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 41 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-12 00:08:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 390 flow [2024-10-12 00:08:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-12 00:08:01,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-10-12 00:08:01,059 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 248 flow. Second operand 4 states and 59 transitions. [2024-10-12 00:08:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 390 flow [2024-10-12 00:08:01,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 376 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-10-12 00:08:01,065 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 246 flow [2024-10-12 00:08:01,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-10-12 00:08:01,066 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-10-12 00:08:01,066 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 246 flow [2024-10-12 00:08:01,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:01,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:01,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:01,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:01,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:01,267 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:01,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2136147208, now seen corresponding path program 1 times [2024-10-12 00:08:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867148622] [2024-10-12 00:08:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:01,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:01,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867148622] [2024-10-12 00:08:01,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867148622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:01,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121576900] [2024-10-12 00:08:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:01,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:01,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:01,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:08:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:01,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:01,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:01,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121576900] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:01,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-10-12 00:08:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993510652] [2024-10-12 00:08:01,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:01,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:08:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:08:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:08:01,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-12 00:08:01,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:01,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:01,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-12 00:08:01,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:01,797 INFO L124 PetriNetUnfolderBase]: 649/1392 cut-off events. [2024-10-12 00:08:01,798 INFO L125 PetriNetUnfolderBase]: For 2273/2331 co-relation queries the response was YES. [2024-10-12 00:08:01,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 1392 events. 649/1392 cut-off events. For 2273/2331 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8006 event pairs, 83 based on Foata normal form. 60/1307 useless extension candidates. Maximal degree in co-relation 3885. Up to 422 conditions per place. [2024-10-12 00:08:01,809 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 6/74 dead transitions. [2024-10-12 00:08:01,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 551 flow [2024-10-12 00:08:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:08:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:08:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-10-12 00:08:01,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4630541871921182 [2024-10-12 00:08:01,811 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 246 flow. Second operand 7 states and 94 transitions. [2024-10-12 00:08:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 551 flow [2024-10-12 00:08:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 529 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:01,818 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 300 flow [2024-10-12 00:08:01,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-10-12 00:08:01,819 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-10-12 00:08:01,819 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 300 flow [2024-10-12 00:08:01,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:01,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:01,820 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:01,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:02,021 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:02,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -490920061, now seen corresponding path program 1 times [2024-10-12 00:08:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75695271] [2024-10-12 00:08:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75695271] [2024-10-12 00:08:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75695271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080999655] [2024-10-12 00:08:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:02,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:02,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:02,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:08:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:02,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:02,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:02,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080999655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:02,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:08:02,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592203107] [2024-10-12 00:08:02,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:02,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:08:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:08:02,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:08:02,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-12 00:08:02,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:02,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:02,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-12 00:08:02,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:02,440 INFO L124 PetriNetUnfolderBase]: 538/1123 cut-off events. [2024-10-12 00:08:02,441 INFO L125 PetriNetUnfolderBase]: For 2467/2493 co-relation queries the response was YES. [2024-10-12 00:08:02,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1123 events. 538/1123 cut-off events. For 2467/2493 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5616 event pairs, 44 based on Foata normal form. 72/1121 useless extension candidates. Maximal degree in co-relation 3482. Up to 445 conditions per place. [2024-10-12 00:08:02,451 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 66 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-10-12 00:08:02,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 691 flow [2024-10-12 00:08:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:08:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:08:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-10-12 00:08:02,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-10-12 00:08:02,453 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 300 flow. Second operand 6 states and 72 transitions. [2024-10-12 00:08:02,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 691 flow [2024-10-12 00:08:02,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 671 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:02,460 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 296 flow [2024-10-12 00:08:02,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-10-12 00:08:02,461 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-10-12 00:08:02,463 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 296 flow [2024-10-12 00:08:02,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:02,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:02,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:08:02,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:02,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:08:02,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:02,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1961347581, now seen corresponding path program 1 times [2024-10-12 00:08:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:02,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292471183] [2024-10-12 00:08:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:02,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292471183] [2024-10-12 00:08:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292471183] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006712242] [2024-10-12 00:08:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:02,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:02,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:08:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:02,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:02,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:02,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006712242] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:02,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:08:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045949365] [2024-10-12 00:08:02,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:02,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:08:02,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:08:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:08:02,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-12 00:08:02,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 296 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:02,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:02,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-12 00:08:02,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:03,204 INFO L124 PetriNetUnfolderBase]: 742/1570 cut-off events. [2024-10-12 00:08:03,204 INFO L125 PetriNetUnfolderBase]: For 3778/3826 co-relation queries the response was YES. [2024-10-12 00:08:03,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 1570 events. 742/1570 cut-off events. For 3778/3826 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8427 event pairs, 154 based on Foata normal form. 108/1674 useless extension candidates. Maximal degree in co-relation 4955. Up to 466 conditions per place. [2024-10-12 00:08:03,220 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 121 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2024-10-12 00:08:03,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 1218 flow [2024-10-12 00:08:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-10-12 00:08:03,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-10-12 00:08:03,221 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 296 flow. Second operand 10 states and 127 transitions. [2024-10-12 00:08:03,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 1218 flow [2024-10-12 00:08:03,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 134 transitions, 1203 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-12 00:08:03,230 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 351 flow [2024-10-12 00:08:03,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-10-12 00:08:03,230 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-10-12 00:08:03,230 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 351 flow [2024-10-12 00:08:03,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:03,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:03,231 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-12 00:08:03,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:08:03,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 00:08:03,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:03,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash 44762529, now seen corresponding path program 2 times [2024-10-12 00:08:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:03,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580539776] [2024-10-12 00:08:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580539776] [2024-10-12 00:08:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580539776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825022875] [2024-10-12 00:08:03,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:03,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:03,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:08:03,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:03,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:03,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:08:03,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:03,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825022875] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:03,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:08:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074355480] [2024-10-12 00:08:03,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:03,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:08:03,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:03,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:08:03,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:08:03,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:03,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:03,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:03,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:04,212 INFO L124 PetriNetUnfolderBase]: 949/2528 cut-off events. [2024-10-12 00:08:04,212 INFO L125 PetriNetUnfolderBase]: For 9639/9757 co-relation queries the response was YES. [2024-10-12 00:08:04,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 2528 events. 949/2528 cut-off events. For 9639/9757 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 16164 event pairs, 39 based on Foata normal form. 140/2645 useless extension candidates. Maximal degree in co-relation 8445. Up to 477 conditions per place. [2024-10-12 00:08:04,242 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 98 selfloop transitions, 49 changer transitions 0/157 dead transitions. [2024-10-12 00:08:04,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 157 transitions, 1380 flow [2024-10-12 00:08:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 00:08:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-12 00:08:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-10-12 00:08:04,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570291777188329 [2024-10-12 00:08:04,244 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 351 flow. Second operand 13 states and 210 transitions. [2024-10-12 00:08:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 157 transitions, 1380 flow [2024-10-12 00:08:04,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 157 transitions, 1351 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:04,268 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 924 flow [2024-10-12 00:08:04,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=924, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-10-12 00:08:04,269 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-10-12 00:08:04,269 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 924 flow [2024-10-12 00:08:04,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:04,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:04,270 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-12 00:08:04,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:08:04,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 00:08:04,475 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:04,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2080921757, now seen corresponding path program 2 times [2024-10-12 00:08:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130944498] [2024-10-12 00:08:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130944498] [2024-10-12 00:08:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130944498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334856942] [2024-10-12 00:08:04,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:04,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:04,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:08:04,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:04,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:04,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:04,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 00:08:04,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 00:08:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334856942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:04,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-12 00:08:04,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914445856] [2024-10-12 00:08:04,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:04,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:08:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:08:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:08:04,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-12 00:08:04,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 924 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:04,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:04,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-12 00:08:04,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:05,785 INFO L124 PetriNetUnfolderBase]: 2236/4263 cut-off events. [2024-10-12 00:08:05,786 INFO L125 PetriNetUnfolderBase]: For 20317/20431 co-relation queries the response was YES. [2024-10-12 00:08:05,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15613 conditions, 4263 events. 2236/4263 cut-off events. For 20317/20431 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 23652 event pairs, 125 based on Foata normal form. 236/4497 useless extension candidates. Maximal degree in co-relation 15578. Up to 1114 conditions per place. [2024-10-12 00:08:05,841 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 292 selfloop transitions, 15 changer transitions 0/310 dead transitions. [2024-10-12 00:08:05,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 310 transitions, 3799 flow [2024-10-12 00:08:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:08:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:08:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 169 transitions. [2024-10-12 00:08:05,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38850574712643676 [2024-10-12 00:08:05,843 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 924 flow. Second operand 15 states and 169 transitions. [2024-10-12 00:08:05,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 310 transitions, 3799 flow [2024-10-12 00:08:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 310 transitions, 3386 flow, removed 190 selfloop flow, removed 6 redundant places. [2024-10-12 00:08:05,891 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 827 flow [2024-10-12 00:08:05,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=827, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-12 00:08:05,892 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-10-12 00:08:05,892 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 827 flow [2024-10-12 00:08:05,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:05,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:05,892 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-12 00:08:05,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:08:06,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:06,095 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:06,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash 317059489, now seen corresponding path program 3 times [2024-10-12 00:08:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417921694] [2024-10-12 00:08:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417921694] [2024-10-12 00:08:06,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417921694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443489753] [2024-10-12 00:08:06,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:08:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:06,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:06,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:06,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:08:06,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-12 00:08:06,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:06,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:08:06,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443489753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:06,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:06,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-12 00:08:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581297052] [2024-10-12 00:08:06,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:06,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 00:08:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 00:08:06,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 00:08:06,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:06,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 827 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:06,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:06,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:06,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:08,291 INFO L124 PetriNetUnfolderBase]: 2331/5983 cut-off events. [2024-10-12 00:08:08,292 INFO L125 PetriNetUnfolderBase]: For 52312/52538 co-relation queries the response was YES. [2024-10-12 00:08:08,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21171 conditions, 5983 events. 2331/5983 cut-off events. For 52312/52538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 39222 event pairs, 55 based on Foata normal form. 284/6232 useless extension candidates. Maximal degree in co-relation 21139. Up to 1229 conditions per place. [2024-10-12 00:08:08,368 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 178 selfloop transitions, 165 changer transitions 0/354 dead transitions. [2024-10-12 00:08:08,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 354 transitions, 3375 flow [2024-10-12 00:08:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 00:08:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-12 00:08:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 414 transitions. [2024-10-12 00:08:08,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5710344827586207 [2024-10-12 00:08:08,371 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 827 flow. Second operand 25 states and 414 transitions. [2024-10-12 00:08:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 354 transitions, 3375 flow [2024-10-12 00:08:08,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 354 transitions, 3180 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:08,413 INFO L231 Difference]: Finished difference. Result has 124 places, 206 transitions, 2566 flow [2024-10-12 00:08:08,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2566, PETRI_PLACES=124, PETRI_TRANSITIONS=206} [2024-10-12 00:08:08,414 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-10-12 00:08:08,414 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 206 transitions, 2566 flow [2024-10-12 00:08:08,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:08,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:08,415 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-12 00:08:08,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:08:08,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:08:08,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:08,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash -143865439, now seen corresponding path program 4 times [2024-10-12 00:08:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966298867] [2024-10-12 00:08:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:09,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966298867] [2024-10-12 00:08:09,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966298867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:09,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660566175] [2024-10-12 00:08:09,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:08:09,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:09,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:09,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:08:09,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:08:09,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:09,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 00:08:09,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:09,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660566175] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:10,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-12 00:08:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344580620] [2024-10-12 00:08:10,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:10,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 00:08:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 00:08:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 00:08:10,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:10,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 206 transitions, 2566 flow. Second operand has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:10,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:10,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:10,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:14,881 INFO L124 PetriNetUnfolderBase]: 5441/14401 cut-off events. [2024-10-12 00:08:14,881 INFO L125 PetriNetUnfolderBase]: For 423585/423841 co-relation queries the response was YES. [2024-10-12 00:08:15,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48977 conditions, 14401 events. 5441/14401 cut-off events. For 423585/423841 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 98682 event pairs, 77 based on Foata normal form. 570/14930 useless extension candidates. Maximal degree in co-relation 48923. Up to 2515 conditions per place. [2024-10-12 00:08:15,090 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 324 selfloop transitions, 545 changer transitions 0/880 dead transitions. [2024-10-12 00:08:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 880 transitions, 10323 flow [2024-10-12 00:08:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-12 00:08:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-10-12 00:08:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 822 transitions. [2024-10-12 00:08:15,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5784658691062632 [2024-10-12 00:08:15,094 INFO L175 Difference]: Start difference. First operand has 124 places, 206 transitions, 2566 flow. Second operand 49 states and 822 transitions. [2024-10-12 00:08:15,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 880 transitions, 10323 flow [2024-10-12 00:08:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 880 transitions, 8445 flow, removed 911 selfloop flow, removed 5 redundant places. [2024-10-12 00:08:15,356 INFO L231 Difference]: Finished difference. Result has 213 places, 588 transitions, 7699 flow [2024-10-12 00:08:15,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7699, PETRI_PLACES=213, PETRI_TRANSITIONS=588} [2024-10-12 00:08:15,361 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-10-12 00:08:15,361 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 588 transitions, 7699 flow [2024-10-12 00:08:15,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:15,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:15,363 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-10-12 00:08:15,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:08:15,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:15,568 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:15,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1035893153, now seen corresponding path program 5 times [2024-10-12 00:08:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724043649] [2024-10-12 00:08:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:15,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724043649] [2024-10-12 00:08:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724043649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568489857] [2024-10-12 00:08:17,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 00:08:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:17,997 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:18,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:08:18,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-12 00:08:18,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:18,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 00:08:18,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:18,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568489857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:20,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-10-12 00:08:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421254018] [2024-10-12 00:08:20,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-12 00:08:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-12 00:08:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-12 00:08:20,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:08:20,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 588 transitions, 7699 flow. Second operand has 97 states, 97 states have (on average 10.02061855670103) internal successors, (972), 97 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:20,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:20,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:08:20,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:43,316 INFO L124 PetriNetUnfolderBase]: 15127/40483 cut-off events. [2024-10-12 00:08:43,317 INFO L125 PetriNetUnfolderBase]: For 3446551/3447093 co-relation queries the response was YES. [2024-10-12 00:08:44,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137830 conditions, 40483 events. 15127/40483 cut-off events. For 3446551/3447093 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 305974 event pairs, 149 based on Foata normal form. 1146/41580 useless extension candidates. Maximal degree in co-relation 137733. Up to 7287 conditions per place. [2024-10-12 00:08:44,509 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 614 selfloop transitions, 1885 changer transitions 0/2510 dead transitions. [2024-10-12 00:08:44,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 2510 transitions, 31952 flow [2024-10-12 00:08:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-12 00:08:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-10-12 00:08:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 1638 transitions. [2024-10-12 00:08:44,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822964806256665 [2024-10-12 00:08:44,516 INFO L175 Difference]: Start difference. First operand has 213 places, 588 transitions, 7699 flow. Second operand 97 states and 1638 transitions. [2024-10-12 00:08:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 2510 transitions, 31952 flow [2024-10-12 00:08:46,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 2510 transitions, 25174 flow, removed 3269 selfloop flow, removed 11 redundant places. [2024-10-12 00:08:46,059 INFO L231 Difference]: Finished difference. Result has 392 places, 1930 transitions, 25328 flow [2024-10-12 00:08:46,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=25328, PETRI_PLACES=392, PETRI_TRANSITIONS=1930} [2024-10-12 00:08:46,061 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-10-12 00:08:46,061 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 1930 transitions, 25328 flow [2024-10-12 00:08:46,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 10.02061855670103) internal successors, (972), 97 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:46,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:46,062 INFO L204 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-10-12 00:08:46,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:46,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 00:08:46,263 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:08:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1485710943, now seen corresponding path program 6 times [2024-10-12 00:08:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080813706] [2024-10-12 00:08:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080813706] [2024-10-12 00:08:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080813706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538674836] [2024-10-12 00:08:53,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 00:08:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:53,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:53,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:08:53,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-10-12 00:08:53,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:53,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-10-12 00:08:53,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:54,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538674836] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:03,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-10-12 00:09:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555202133] [2024-10-12 00:09:03,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:03,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-10-12 00:09:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-10-12 00:09:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-10-12 00:09:03,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-12 00:09:03,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1930 transitions, 25328 flow. Second operand has 193 states, 193 states have (on average 10.010362694300518) internal successors, (1932), 193 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:03,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:03,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-12 00:09:03,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand