./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-figure1.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-figure1.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 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:06:01,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:06:01,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:06:01,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:06:01,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:06:01,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:06:01,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:06:01,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:06:01,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:06:01,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:06:01,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:06:01,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:06:01,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:06:01,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:06:01,292 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:06:01,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:06:01,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:06:01,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:06:01,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:06:01,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:06:01,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:06:01,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:06:01,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:06:01,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:06:01,296 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:06:01,297 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:06:01,297 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:06:01,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:06:01,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:06:01,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:06:01,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:06:01,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:06:01,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:06:01,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:06:01,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:01,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:06:01,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:06:01,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:06:01,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:06:01,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:06:01,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:06:01,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:06:01,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:06:01,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:06:01,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 [2024-10-12 00:06:01,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:06:01,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:06:01,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:06:01,629 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:06:01,630 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:06:01,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-12 00:06:03,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:06:03,567 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:06:03,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-12 00:06:03,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/59987b9a4/3b576b26e693463eaac6fff45f11cd1d/FLAGb16c9d30b [2024-10-12 00:06:03,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/59987b9a4/3b576b26e693463eaac6fff45f11cd1d [2024-10-12 00:06:03,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:06:03,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:06:03,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:03,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:06:03,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:06:03,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:03,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fafd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03, skipping insertion in model container [2024-10-12 00:06:03,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:03,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:06:03,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:03,897 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:06:03,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:03,961 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:06:03,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03 WrapperNode [2024-10-12 00:06:03,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:03,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:03,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:06:03,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:06:03,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:03,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,006 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-10-12 00:06:04,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:04,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:06:04,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:06:04,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:06:04,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,040 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 00:06:04,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:06:04,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:06:04,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:06:04,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:06:04,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (1/1) ... [2024-10-12 00:06:04,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:04,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:04,117 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 00:06:04,122 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 00:06:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:06:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:06:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:06:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:06:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:06:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:06:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:06:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:06:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:06:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:06:04,193 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 00:06:04,297 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:06:04,304 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:06:04,544 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:06:04,545 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:06:04,686 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:06:04,686 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 00:06:04,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:04 BoogieIcfgContainer [2024-10-12 00:06:04,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:06:04,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:06:04,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:06:04,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:06:04,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:06:03" (1/3) ... [2024-10-12 00:06:04,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d4b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:04, skipping insertion in model container [2024-10-12 00:06:04,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:03" (2/3) ... [2024-10-12 00:06:04,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d4b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:04, skipping insertion in model container [2024-10-12 00:06:04,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:04" (3/3) ... [2024-10-12 00:06:04,701 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-10-12 00:06:04,719 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:06:04,721 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-12 00:06:04,721 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:06:04,783 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:06:04,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-10-12 00:06:04,868 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-12 00:06:04,868 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:06:04,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-12 00:06:04,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-10-12 00:06:04,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-10-12 00:06:04,895 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:06:04,908 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;@798d5273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:06:04,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-12 00:06:04,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:06:04,921 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-12 00:06:04,921 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-12 00:06:04,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:04,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:06:04,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash 246124331, now seen corresponding path program 1 times [2024-10-12 00:06:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:04,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862185798] [2024-10-12 00:06:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:04,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:05,235 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 00:06:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862185798] [2024-10-12 00:06:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862185798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329407214] [2024-10-12 00:06:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:05,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:05,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:05,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:05,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 00:06:05,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:05,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:05,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:05,457 INFO L124 PetriNetUnfolderBase]: 120/292 cut-off events. [2024-10-12 00:06:05,458 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-12 00:06:05,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 120/292 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1300 event pairs, 40 based on Foata normal form. 7/244 useless extension candidates. Maximal degree in co-relation 487. Up to 164 conditions per place. [2024-10-12 00:06:05,469 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 2 changer transitions 2/35 dead transitions. [2024-10-12 00:06:05,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 135 flow [2024-10-12 00:06:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-12 00:06:05,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-12 00:06:05,483 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 67 transitions. [2024-10-12 00:06:05,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 135 flow [2024-10-12 00:06:05,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:06:05,492 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 76 flow [2024-10-12 00:06:05,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-10-12 00:06:05,499 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-10-12 00:06:05,499 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 76 flow [2024-10-12 00:06:05,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 00:06:05,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:05,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:05,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:06:05,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:05,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 302290318, now seen corresponding path program 1 times [2024-10-12 00:06:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:05,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255634365] [2024-10-12 00:06:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:05,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:05,596 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 00:06:05,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:05,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255634365] [2024-10-12 00:06:05,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255634365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:05,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:05,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758697654] [2024-10-12 00:06:05,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:05,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:05,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:05,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:06:05,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:05,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:05,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:05,841 INFO L124 PetriNetUnfolderBase]: 205/415 cut-off events. [2024-10-12 00:06:05,841 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-12 00:06:05,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 415 events. 205/415 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1916 event pairs, 103 based on Foata normal form. 12/367 useless extension candidates. Maximal degree in co-relation 450. Up to 288 conditions per place. [2024-10-12 00:06:05,846 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 36 selfloop transitions, 3 changer transitions 1/47 dead transitions. [2024-10-12 00:06:05,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 206 flow [2024-10-12 00:06:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-12 00:06:05,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-12 00:06:05,851 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 76 flow. Second operand 4 states and 78 transitions. [2024-10-12 00:06:05,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 206 flow [2024-10-12 00:06:05,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:05,853 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 98 flow [2024-10-12 00:06:05,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-10-12 00:06:05,854 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-10-12 00:06:05,854 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 98 flow [2024-10-12 00:06:05,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:06:05,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:05,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:05,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:06:05,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:05,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash -608167951, now seen corresponding path program 1 times [2024-10-12 00:06:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234916639] [2024-10-12 00:06:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:05,933 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 00:06:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234916639] [2024-10-12 00:06:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234916639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:05,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:05,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421958513] [2024-10-12 00:06:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:05,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:05,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:05,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:05,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:05,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:05,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:06,104 INFO L124 PetriNetUnfolderBase]: 200/527 cut-off events. [2024-10-12 00:06:06,105 INFO L125 PetriNetUnfolderBase]: For 132/146 co-relation queries the response was YES. [2024-10-12 00:06:06,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 527 events. 200/527 cut-off events. For 132/146 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2843 event pairs, 40 based on Foata normal form. 17/477 useless extension candidates. Maximal degree in co-relation 953. Up to 137 conditions per place. [2024-10-12 00:06:06,111 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 36 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-12 00:06:06,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 253 flow [2024-10-12 00:06:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-12 00:06:06,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-10-12 00:06:06,114 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 98 flow. Second operand 4 states and 93 transitions. [2024-10-12 00:06:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 253 flow [2024-10-12 00:06:06,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:06,117 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 154 flow [2024-10-12 00:06:06,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-12 00:06:06,118 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-12 00:06:06,118 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 154 flow [2024-10-12 00:06:06,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:06,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:06,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:06,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:06:06,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:06,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1015287356, now seen corresponding path program 1 times [2024-10-12 00:06:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:06,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305764670] [2024-10-12 00:06:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,206 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 00:06:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305764670] [2024-10-12 00:06:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305764670] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012624151] [2024-10-12 00:06:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:06,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:06,215 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 00:06:06,227 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 00:06:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:06:06,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:06,353 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 00:06:06,355 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012624151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-12 00:06:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639127723] [2024-10-12 00:06:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:06,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:06:06,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:06,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:06:06,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:06,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:06,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:06,474 INFO L124 PetriNetUnfolderBase]: 222/579 cut-off events. [2024-10-12 00:06:06,475 INFO L125 PetriNetUnfolderBase]: For 606/628 co-relation queries the response was YES. [2024-10-12 00:06:06,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 579 events. 222/579 cut-off events. For 606/628 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3105 event pairs, 42 based on Foata normal form. 34/574 useless extension candidates. Maximal degree in co-relation 1242. Up to 233 conditions per place. [2024-10-12 00:06:06,481 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-10-12 00:06:06,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 267 flow [2024-10-12 00:06:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-10-12 00:06:06,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-10-12 00:06:06,483 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 154 flow. Second operand 4 states and 79 transitions. [2024-10-12 00:06:06,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 267 flow [2024-10-12 00:06:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 261 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:06,487 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 201 flow [2024-10-12 00:06:06,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-10-12 00:06:06,488 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-12 00:06:06,488 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 201 flow [2024-10-12 00:06:06,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:06:06,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:06,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:06,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:06:06,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:06,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:06,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -688572923, now seen corresponding path program 1 times [2024-10-12 00:06:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133391676] [2024-10-12 00:06:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:06,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,753 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 00:06:06,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133391676] [2024-10-12 00:06:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133391676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:06,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:06,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550537047] [2024-10-12 00:06:06,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:06,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:06,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:06,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:06,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:06,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:06,960 INFO L124 PetriNetUnfolderBase]: 496/1023 cut-off events. [2024-10-12 00:06:06,960 INFO L125 PetriNetUnfolderBase]: For 1989/2088 co-relation queries the response was YES. [2024-10-12 00:06:06,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1023 events. 496/1023 cut-off events. For 1989/2088 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5479 event pairs, 250 based on Foata normal form. 45/1026 useless extension candidates. Maximal degree in co-relation 1172. Up to 629 conditions per place. [2024-10-12 00:06:06,970 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 54 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-12 00:06:06,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 519 flow [2024-10-12 00:06:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-12 00:06:06,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-12 00:06:06,973 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 201 flow. Second operand 4 states and 75 transitions. [2024-10-12 00:06:06,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 519 flow [2024-10-12 00:06:06,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 474 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:06,984 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 209 flow [2024-10-12 00:06:06,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-10-12 00:06:06,987 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-10-12 00:06:06,988 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 209 flow [2024-10-12 00:06:06,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:06,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:06,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:06,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:06:06,991 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:06,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash -733563417, now seen corresponding path program 1 times [2024-10-12 00:06:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539011596] [2024-10-12 00:06:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:07,081 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 00:06:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539011596] [2024-10-12 00:06:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539011596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486613165] [2024-10-12 00:06:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:07,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:07,084 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 00:06:07,086 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 00:06:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:07,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:07,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:07,185 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 00:06:07,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486613165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:07,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:06:07,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822502329] [2024-10-12 00:06:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:07,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:07,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:07,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 00:06:07,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:07,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:07,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:07,434 INFO L124 PetriNetUnfolderBase]: 452/931 cut-off events. [2024-10-12 00:06:07,435 INFO L125 PetriNetUnfolderBase]: For 1325/1390 co-relation queries the response was YES. [2024-10-12 00:06:07,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 931 events. 452/931 cut-off events. For 1325/1390 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4862 event pairs, 60 based on Foata normal form. 69/949 useless extension candidates. Maximal degree in co-relation 2506. Up to 305 conditions per place. [2024-10-12 00:06:07,445 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 6 changer transitions 1/80 dead transitions. [2024-10-12 00:06:07,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 569 flow [2024-10-12 00:06:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-10-12 00:06:07,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-10-12 00:06:07,449 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 209 flow. Second operand 6 states and 106 transitions. [2024-10-12 00:06:07,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 569 flow [2024-10-12 00:06:07,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:07,456 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 214 flow [2024-10-12 00:06:07,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-10-12 00:06:07,457 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-10-12 00:06:07,457 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 214 flow [2024-10-12 00:06:07,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 00:06:07,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:07,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:06:07,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:06:07,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:07,658 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:07,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1265629176, now seen corresponding path program 1 times [2024-10-12 00:06:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586950447] [2024-10-12 00:06:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:07,721 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 00:06:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586950447] [2024-10-12 00:06:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586950447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058571829] [2024-10-12 00:06:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:07,725 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 00:06:07,726 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 00:06:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:07,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:07,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:07,835 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 00:06:07,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:07,888 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 00:06:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058571829] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:07,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:07,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:06:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092070698] [2024-10-12 00:06:07,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:07,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:07,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:07,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:07,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 00:06:07,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:07,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:07,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:08,411 INFO L124 PetriNetUnfolderBase]: 1022/2112 cut-off events. [2024-10-12 00:06:08,411 INFO L125 PetriNetUnfolderBase]: For 3811/3975 co-relation queries the response was YES. [2024-10-12 00:06:08,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 2112 events. 1022/2112 cut-off events. For 3811/3975 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11928 event pairs, 194 based on Foata normal form. 158/2260 useless extension candidates. Maximal degree in co-relation 5368. Up to 744 conditions per place. [2024-10-12 00:06:08,434 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 135 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2024-10-12 00:06:08,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 155 transitions, 1165 flow [2024-10-12 00:06:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:08,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-10-12 00:06:08,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-10-12 00:06:08,438 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 214 flow. Second operand 10 states and 190 transitions. [2024-10-12 00:06:08,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 155 transitions, 1165 flow [2024-10-12 00:06:08,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 1138 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:08,447 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 278 flow [2024-10-12 00:06:08,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=278, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-10-12 00:06:08,448 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-10-12 00:06:08,448 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 278 flow [2024-10-12 00:06:08,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 00:06:08,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:08,450 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:08,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:06:08,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:08,656 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:08,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1307805048, now seen corresponding path program 1 times [2024-10-12 00:06:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462124543] [2024-10-12 00:06:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:08,742 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 00:06:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462124543] [2024-10-12 00:06:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462124543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537953024] [2024-10-12 00:06:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:08,749 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 00:06:08,753 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 00:06:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:08,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:08,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:08,843 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 00:06:08,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:08,902 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 00:06:08,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537953024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:08,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-12 00:06:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159656774] [2024-10-12 00:06:08,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:08,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 00:06:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 00:06:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:06:08,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:08,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 278 flow. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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 00:06:08,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:08,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:08,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:09,239 INFO L124 PetriNetUnfolderBase]: 826/2106 cut-off events. [2024-10-12 00:06:09,239 INFO L125 PetriNetUnfolderBase]: For 5243/5382 co-relation queries the response was YES. [2024-10-12 00:06:09,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 2106 events. 826/2106 cut-off events. For 5243/5382 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13779 event pairs, 87 based on Foata normal form. 266/2363 useless extension candidates. Maximal degree in co-relation 6134. Up to 389 conditions per place. [2024-10-12 00:06:09,260 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 82 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-12 00:06:09,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 805 flow [2024-10-12 00:06:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:06:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:06:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-10-12 00:06:09,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-12 00:06:09,262 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 278 flow. Second operand 7 states and 152 transitions. [2024-10-12 00:06:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 805 flow [2024-10-12 00:06:09,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 776 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:09,274 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 382 flow [2024-10-12 00:06:09,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-10-12 00:06:09,275 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2024-10-12 00:06:09,276 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 382 flow [2024-10-12 00:06:09,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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 00:06:09,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:09,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:09,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:06:09,481 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,SelfDestructingSolverStorable7 [2024-10-12 00:06:09,482 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:09,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1990357390, now seen corresponding path program 1 times [2024-10-12 00:06:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:09,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186996779] [2024-10-12 00:06:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:09,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186996779] [2024-10-12 00:06:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186996779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100105157] [2024-10-12 00:06:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:09,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:09,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:09,571 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 00:06:09,574 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 00:06:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:09,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:09,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:09,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100105157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:09,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:06:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430090309] [2024-10-12 00:06:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:09,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:09,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:09,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 00:06:09,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:09,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:09,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:10,111 INFO L124 PetriNetUnfolderBase]: 1274/2650 cut-off events. [2024-10-12 00:06:10,112 INFO L125 PetriNetUnfolderBase]: For 7950/8072 co-relation queries the response was YES. [2024-10-12 00:06:10,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9061 conditions, 2650 events. 1274/2650 cut-off events. For 7950/8072 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16575 event pairs, 209 based on Foata normal form. 115/2630 useless extension candidates. Maximal degree in co-relation 7957. Up to 665 conditions per place. [2024-10-12 00:06:10,142 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 115 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-12 00:06:10,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 132 transitions, 1315 flow [2024-10-12 00:06:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-10-12 00:06:10,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-10-12 00:06:10,144 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 382 flow. Second operand 6 states and 101 transitions. [2024-10-12 00:06:10,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 132 transitions, 1315 flow [2024-10-12 00:06:10,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 1230 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:10,160 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 365 flow [2024-10-12 00:06:10,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-10-12 00:06:10,162 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2024-10-12 00:06:10,163 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 365 flow [2024-10-12 00:06:10,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 00:06:10,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:10,164 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:10,185 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 00:06:10,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:10,369 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:10,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1688866786, now seen corresponding path program 1 times [2024-10-12 00:06:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599671168] [2024-10-12 00:06:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599671168] [2024-10-12 00:06:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599671168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197891084] [2024-10-12 00:06:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:10,431 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 00:06:10,439 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 00:06:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:10,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:10,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:10,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197891084] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:10,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:10,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:06:10,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934125703] [2024-10-12 00:06:10,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:10,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:10,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-12 00:06:10,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 365 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 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 00:06:10,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:10,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-12 00:06:10,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:11,326 INFO L124 PetriNetUnfolderBase]: 2041/4312 cut-off events. [2024-10-12 00:06:11,327 INFO L125 PetriNetUnfolderBase]: For 12354/12520 co-relation queries the response was YES. [2024-10-12 00:06:11,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14867 conditions, 4312 events. 2041/4312 cut-off events. For 12354/12520 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 27986 event pairs, 453 based on Foata normal form. 225/4499 useless extension candidates. Maximal degree in co-relation 10768. Up to 1473 conditions per place. [2024-10-12 00:06:11,367 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 202 selfloop transitions, 13 changer transitions 6/231 dead transitions. [2024-10-12 00:06:11,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 231 transitions, 2268 flow [2024-10-12 00:06:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-10-12 00:06:11,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-12 00:06:11,369 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 365 flow. Second operand 10 states and 175 transitions. [2024-10-12 00:06:11,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 231 transitions, 2268 flow [2024-10-12 00:06:11,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 231 transitions, 2238 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:11,388 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 428 flow [2024-10-12 00:06:11,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=428, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-10-12 00:06:11,389 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-10-12 00:06:11,389 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 428 flow [2024-10-12 00:06:11,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 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 00:06:11,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:11,390 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-12 00:06:11,414 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 00:06:11,594 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,SelfDestructingSolverStorable9 [2024-10-12 00:06:11,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:11,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash 48756332, now seen corresponding path program 1 times [2024-10-12 00:06:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101025812] [2024-10-12 00:06:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:11,757 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 00:06:11,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:11,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101025812] [2024-10-12 00:06:11,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101025812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:11,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401866161] [2024-10-12 00:06:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:11,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:11,761 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 00:06:11,769 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 00:06:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:11,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:06:11,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:11,892 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 00:06:11,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:11,982 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 00:06:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401866161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:11,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:11,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:06:11,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868013594] [2024-10-12 00:06:11,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:11,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:06:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:06:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:06:11,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:11,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 13 states have internal predecessors, (184), 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 00:06:11,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:11,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:11,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:13,341 INFO L124 PetriNetUnfolderBase]: 3284/7520 cut-off events. [2024-10-12 00:06:13,342 INFO L125 PetriNetUnfolderBase]: For 27683/28085 co-relation queries the response was YES. [2024-10-12 00:06:13,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26870 conditions, 7520 events. 3284/7520 cut-off events. For 27683/28085 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 57444 event pairs, 275 based on Foata normal form. 220/7702 useless extension candidates. Maximal degree in co-relation 26186. Up to 1303 conditions per place. [2024-10-12 00:06:13,412 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 210 selfloop transitions, 45 changer transitions 4/275 dead transitions. [2024-10-12 00:06:13,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 275 transitions, 2301 flow [2024-10-12 00:06:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:06:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-12 00:06:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-10-12 00:06:13,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-10-12 00:06:13,414 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 428 flow. Second operand 12 states and 278 transitions. [2024-10-12 00:06:13,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 275 transitions, 2301 flow [2024-10-12 00:06:13,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 275 transitions, 2200 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:13,459 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 921 flow [2024-10-12 00:06:13,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=921, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-10-12 00:06:13,460 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 61 predicate places. [2024-10-12 00:06:13,460 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 921 flow [2024-10-12 00:06:13,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 13 states have internal predecessors, (184), 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 00:06:13,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:13,460 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-12 00:06:13,478 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 00:06:13,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:13,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:13,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 801205761, now seen corresponding path program 2 times [2024-10-12 00:06:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:13,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493396787] [2024-10-12 00:06:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:13,821 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 00:06:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493396787] [2024-10-12 00:06:13,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493396787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255314112] [2024-10-12 00:06:13,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:13,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:13,824 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 00:06:13,825 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 00:06:13,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:06:13,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:13,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:06:13,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:13,931 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 00:06:13,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:13,989 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 00:06:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255314112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:13,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:13,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-12 00:06:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803492392] [2024-10-12 00:06:13,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:13,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:06:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:06:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:06:14,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:06:14,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 921 flow. Second operand has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 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 00:06:14,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:14,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:06:14,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:16,029 INFO L124 PetriNetUnfolderBase]: 5579/10427 cut-off events. [2024-10-12 00:06:16,029 INFO L125 PetriNetUnfolderBase]: For 49612/49999 co-relation queries the response was YES. [2024-10-12 00:06:16,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39926 conditions, 10427 events. 5579/10427 cut-off events. For 49612/49999 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 72527 event pairs, 645 based on Foata normal form. 492/10907 useless extension candidates. Maximal degree in co-relation 35926. Up to 2949 conditions per place. [2024-10-12 00:06:16,133 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 362 selfloop transitions, 16 changer transitions 1/388 dead transitions. [2024-10-12 00:06:16,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 388 transitions, 4461 flow [2024-10-12 00:06:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:06:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:06:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-10-12 00:06:16,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-10-12 00:06:16,135 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 921 flow. Second operand 15 states and 246 transitions. [2024-10-12 00:06:16,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 388 transitions, 4461 flow [2024-10-12 00:06:16,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 388 transitions, 4034 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-10-12 00:06:16,219 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 871 flow [2024-10-12 00:06:16,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=871, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2024-10-12 00:06:16,220 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-10-12 00:06:16,220 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 871 flow [2024-10-12 00:06:16,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 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 00:06:16,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:16,221 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:16,242 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 00:06:16,421 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,SelfDestructingSolverStorable11 [2024-10-12 00:06:16,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:16,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1831056283, now seen corresponding path program 2 times [2024-10-12 00:06:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263973204] [2024-10-12 00:06:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:16,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263973204] [2024-10-12 00:06:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263973204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986411773] [2024-10-12 00:06:16,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:16,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:16,774 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 00:06:16,776 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 00:06:16,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:06:16,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:16,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:06:16,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 00:06:16,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 00:06:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986411773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:16,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-12 00:06:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471448280] [2024-10-12 00:06:17,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:17,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:06:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:06:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:06:17,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-12 00:06:17,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 871 flow. Second operand has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 00:06:17,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:17,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-12 00:06:17,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:19,424 INFO L124 PetriNetUnfolderBase]: 7053/13297 cut-off events. [2024-10-12 00:06:19,424 INFO L125 PetriNetUnfolderBase]: For 65482/67012 co-relation queries the response was YES. [2024-10-12 00:06:19,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51026 conditions, 13297 events. 7053/13297 cut-off events. For 65482/67012 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 96243 event pairs, 460 based on Foata normal form. 1012/14277 useless extension candidates. Maximal degree in co-relation 41227. Up to 2545 conditions per place. [2024-10-12 00:06:19,559 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 536 selfloop transitions, 21 changer transitions 39/606 dead transitions. [2024-10-12 00:06:19,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 606 transitions, 7604 flow [2024-10-12 00:06:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:06:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:06:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 239 transitions. [2024-10-12 00:06:19,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-10-12 00:06:19,563 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 871 flow. Second operand 15 states and 239 transitions. [2024-10-12 00:06:19,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 606 transitions, 7604 flow [2024-10-12 00:06:19,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 606 transitions, 7380 flow, removed 52 selfloop flow, removed 14 redundant places. [2024-10-12 00:06:19,692 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 873 flow [2024-10-12 00:06:19,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=873, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2024-10-12 00:06:19,694 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-10-12 00:06:19,694 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 873 flow [2024-10-12 00:06:19,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 00:06:19,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:19,695 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-12 00:06:19,716 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 00:06:19,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:19,900 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:19,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1392323252, now seen corresponding path program 2 times [2024-10-12 00:06:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459301068] [2024-10-12 00:06:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:20,240 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 00:06:20,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459301068] [2024-10-12 00:06:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459301068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:20,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353258587] [2024-10-12 00:06:20,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:20,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:20,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:20,243 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 00:06:20,244 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 00:06:20,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:06:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:20,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:06:20,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:20,402 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 00:06:20,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:20,643 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 00:06:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353258587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:20,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-12 00:06:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430434942] [2024-10-12 00:06:20,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 00:06:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 00:06:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 00:06:20,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:20,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 873 flow. Second operand has 25 states, 25 states have (on average 14.08) internal successors, (352), 25 states have internal predecessors, (352), 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 00:06:20,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:24,342 INFO L124 PetriNetUnfolderBase]: 8201/19221 cut-off events. [2024-10-12 00:06:24,343 INFO L125 PetriNetUnfolderBase]: For 127846/129504 co-relation queries the response was YES. [2024-10-12 00:06:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73456 conditions, 19221 events. 8201/19221 cut-off events. For 127846/129504 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 160245 event pairs, 417 based on Foata normal form. 598/19804 useless extension candidates. Maximal degree in co-relation 72328. Up to 3487 conditions per place. [2024-10-12 00:06:24,686 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 443 selfloop transitions, 205 changer transitions 0/666 dead transitions. [2024-10-12 00:06:24,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 666 transitions, 6615 flow [2024-10-12 00:06:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:06:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:06:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 520 transitions. [2024-10-12 00:06:24,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-10-12 00:06:24,691 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 873 flow. Second operand 24 states and 520 transitions. [2024-10-12 00:06:24,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 666 transitions, 6615 flow [2024-10-12 00:06:24,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 666 transitions, 5768 flow, removed 118 selfloop flow, removed 15 redundant places. [2024-10-12 00:06:24,866 INFO L231 Difference]: Finished difference. Result has 131 places, 255 transitions, 3309 flow [2024-10-12 00:06:24,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3309, PETRI_PLACES=131, PETRI_TRANSITIONS=255} [2024-10-12 00:06:24,868 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 98 predicate places. [2024-10-12 00:06:24,869 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 255 transitions, 3309 flow [2024-10-12 00:06:24,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.08) internal successors, (352), 25 states have internal predecessors, (352), 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 00:06:24,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:24,870 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-12 00:06:24,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:06:25,071 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,SelfDestructingSolverStorable13 [2024-10-12 00:06:25,072 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:25,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1982511884, now seen corresponding path program 3 times [2024-10-12 00:06:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514315896] [2024-10-12 00:06:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:25,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:25,679 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 00:06:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514315896] [2024-10-12 00:06:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514315896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:25,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202019813] [2024-10-12 00:06:25,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:06:25,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:25,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:25,684 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 00:06:25,685 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 00:06:25,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-12 00:06:25,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:25,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 00:06:25,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:25,936 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 00:06:25,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:26,647 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 00:06:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202019813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:26,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-12 00:06:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743899604] [2024-10-12 00:06:26,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:26,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 00:06:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 00:06:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 00:06:26,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:26,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 255 transitions, 3309 flow. Second operand has 49 states, 49 states have (on average 14.040816326530612) internal successors, (688), 49 states have internal predecessors, (688), 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 00:06:26,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:26,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:26,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:40,853 INFO L124 PetriNetUnfolderBase]: 22071/51607 cut-off events. [2024-10-12 00:06:40,853 INFO L125 PetriNetUnfolderBase]: For 825581/828909 co-relation queries the response was YES. [2024-10-12 00:06:41,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191186 conditions, 51607 events. 22071/51607 cut-off events. For 825581/828909 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 459882 event pairs, 1397 based on Foata normal form. 1520/53112 useless extension candidates. Maximal degree in co-relation 188988. Up to 8679 conditions per place. [2024-10-12 00:06:41,825 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 875 selfloop transitions, 821 changer transitions 0/1714 dead transitions. [2024-10-12 00:06:41,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1714 transitions, 19099 flow [2024-10-12 00:06:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-12 00:06:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-12 00:06:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1048 transitions. [2024-10-12 00:06:41,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822916666666666 [2024-10-12 00:06:41,831 INFO L175 Difference]: Start difference. First operand has 131 places, 255 transitions, 3309 flow. Second operand 48 states and 1048 transitions. [2024-10-12 00:06:41,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 1714 transitions, 19099 flow [2024-10-12 00:06:42,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1714 transitions, 17151 flow, removed 951 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:42,572 INFO L231 Difference]: Finished difference. Result has 219 places, 871 transitions, 12965 flow [2024-10-12 00:06:42,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=12965, PETRI_PLACES=219, PETRI_TRANSITIONS=871} [2024-10-12 00:06:42,573 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-10-12 00:06:42,573 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 871 transitions, 12965 flow [2024-10-12 00:06:42,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 14.040816326530612) internal successors, (688), 49 states have internal predecessors, (688), 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 00:06:42,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:42,574 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-10-12 00:06:42,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:06:42,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 00:06:42,775 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-12 00:06:42,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1724589708, now seen corresponding path program 4 times [2024-10-12 00:06:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:42,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146311783] [2024-10-12 00:06:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:42,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:45,001 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 00:06:45,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146311783] [2024-10-12 00:06:45,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146311783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098055200] [2024-10-12 00:06:45,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:06:45,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:45,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:45,004 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:45,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:06:45,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:06:45,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:45,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 00:06:45,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:45,443 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 00:06:45,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:47,977 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 00:06:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098055200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:47,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-10-12 00:06:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583747644] [2024-10-12 00:06:47,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:47,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-12 00:06:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-12 00:06:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-12 00:06:47,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-12 00:06:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 871 transitions, 12965 flow. Second operand has 97 states, 97 states have (on average 14.02061855670103) internal successors, (1360), 97 states have internal predecessors, (1360), 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 00:06:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-12 00:06:47,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand