./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:43:59,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:43:59,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:43:59,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:43:59,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:43:59,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:43:59,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:43:59,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:43:59,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:43:59,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:43:59,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:43:59,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:43:59,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:43:59,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:43:59,850 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:43:59,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:43:59,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:43:59,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:43:59,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:43:59,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:43:59,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:43:59,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:43:59,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:43:59,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:43:59,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:43:59,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:43:59,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:43:59,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:43:59,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:43:59,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:43:59,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:43:59,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:43:59,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:43:59,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:43:59,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:43:59,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:43:59,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:43:59,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:43:59,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:43:59,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:43:59,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:43:59,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:43:59,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:43:59,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:43:59,861 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-12 20:44:00,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:44:00,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:44:00,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:44:00,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:44:00,132 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:44:00,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-12 20:44:01,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:44:01,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:44:01,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-12 20:44:01,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1701b40/826b305b695c4e18aa4d0341ea0572b2/FLAG570a72ede [2024-11-12 20:44:02,137 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1701b40/826b305b695c4e18aa4d0341ea0572b2 [2024-11-12 20:44:02,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:44:02,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:44:02,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:02,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:44:02,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:44:02,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eacfaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02, skipping insertion in model container [2024-11-12 20:44:02,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,171 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:44:02,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:02,429 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:44:02,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:02,482 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:44:02,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02 WrapperNode [2024-11-12 20:44:02,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:02,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:02,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:44:02,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:44:02,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,521 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-11-12 20:44:02,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:02,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:44:02,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:44:02,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:44:02,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,555 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]. [2024-11-12 20:44:02,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:44:02,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:44:02,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:44:02,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:44:02,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (1/1) ... [2024-11-12 20:44:02,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:44:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:02,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:44:02,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:44:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:44:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:44:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:44:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:44:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:44:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:44:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:44:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:44:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:44:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:44:02,690 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:44:02,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:44:02,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:44:03,043 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:44:03,043 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:44:03,237 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:44:03,237 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 20:44:03,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:03 BoogieIcfgContainer [2024-11-12 20:44:03,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:44:03,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:44:03,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:44:03,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:44:03,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:44:02" (1/3) ... [2024-11-12 20:44:03,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72390888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:03, skipping insertion in model container [2024-11-12 20:44:03,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:02" (2/3) ... [2024-11-12 20:44:03,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72390888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:03, skipping insertion in model container [2024-11-12 20:44:03,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:03" (3/3) ... [2024-11-12 20:44:03,249 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-12 20:44:03,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:44:03,267 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-12 20:44:03,267 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:44:03,338 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:44:03,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 125 flow [2024-11-12 20:44:03,405 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-11-12 20:44:03,405 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:44:03,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 6/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 154 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-12 20:44:03,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 125 flow [2024-11-12 20:44:03,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 109 flow [2024-11-12 20:44:03,423 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:44:03,430 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;@64a9e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:44:03,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-12 20:44:03,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:44:03,440 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-12 20:44:03,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:44:03,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:03,441 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:44:03,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:03,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash -446796878, now seen corresponding path program 1 times [2024-11-12 20:44:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926484517] [2024-11-12 20:44:03,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926484517] [2024-11-12 20:44:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926484517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:03,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276005876] [2024-11-12 20:44:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:03,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:03,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:03,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-12 20:44:03,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:03,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:04,678 INFO L124 PetriNetUnfolderBase]: 6500/8911 cut-off events. [2024-11-12 20:44:04,679 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-11-12 20:44:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17067 conditions, 8911 events. 6500/8911 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 50083 event pairs, 1294 based on Foata normal form. 0/4814 useless extension candidates. Maximal degree in co-relation 16249. Up to 7835 conditions per place. [2024-11-12 20:44:04,766 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 42 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-11-12 20:44:04,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 251 flow [2024-11-12 20:44:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-12 20:44:04,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-11-12 20:44:04,781 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 109 flow. Second operand 3 states and 112 transitions. [2024-11-12 20:44:04,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 251 flow [2024-11-12 20:44:04,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 235 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:44:04,793 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 169 flow [2024-11-12 20:44:04,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-11-12 20:44:04,803 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-12 20:44:04,804 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 169 flow [2024-11-12 20:44:04,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-12 20:44:04,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:04,804 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:04,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:44:04,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1507921065, now seen corresponding path program 1 times [2024-11-12 20:44:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117802002] [2024-11-12 20:44:04,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117802002] [2024-11-12 20:44:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117802002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615927698] [2024-11-12 20:44:05,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:05,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:05,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:44:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:05,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:44:05,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:05,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:44:05,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615927698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:05,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:44:05,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-12 20:44:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130001902] [2024-11-12 20:44:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:05,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:44:05,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:05,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:05,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:05,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:05,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:05,633 INFO L124 PetriNetUnfolderBase]: 4081/5770 cut-off events. [2024-11-12 20:44:05,634 INFO L125 PetriNetUnfolderBase]: For 1081/1081 co-relation queries the response was YES. [2024-11-12 20:44:05,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14435 conditions, 5770 events. 4081/5770 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 32767 event pairs, 1597 based on Foata normal form. 0/3372 useless extension candidates. Maximal degree in co-relation 4427. Up to 5046 conditions per place. [2024-11-12 20:44:05,679 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-12 20:44:05,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 229 flow [2024-11-12 20:44:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-12 20:44:05,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-12 20:44:05,683 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 169 flow. Second operand 3 states and 84 transitions. [2024-11-12 20:44:05,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 229 flow [2024-11-12 20:44:05,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:05,686 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 152 flow [2024-11-12 20:44:05,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2024-11-12 20:44:05,689 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2024-11-12 20:44:05,689 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 152 flow [2024-11-12 20:44:05,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:05,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:05,689 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:05,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:44:05,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:05,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:05,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1507921064, now seen corresponding path program 1 times [2024-11-12 20:44:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447088286] [2024-11-12 20:44:05,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447088286] [2024-11-12 20:44:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447088286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761846708] [2024-11-12 20:44:05,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:05,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:05,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:05,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:44:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:06,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:44:06,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:06,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761846708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:06,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-12 20:44:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823841108] [2024-11-12 20:44:06,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:06,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:06,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:06,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:06,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:06,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:06,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:07,530 INFO L124 PetriNetUnfolderBase]: 10503/15324 cut-off events. [2024-11-12 20:44:07,530 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-11-12 20:44:07,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 15324 events. 10503/15324 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 91990 event pairs, 531 based on Foata normal form. 0/10905 useless extension candidates. Maximal degree in co-relation 36671. Up to 7945 conditions per place. [2024-11-12 20:44:07,642 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 99 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-11-12 20:44:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 150 transitions, 725 flow [2024-11-12 20:44:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:44:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:44:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 277 transitions. [2024-11-12 20:44:07,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.760989010989011 [2024-11-12 20:44:07,647 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 152 flow. Second operand 7 states and 277 transitions. [2024-11-12 20:44:07,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 150 transitions, 725 flow [2024-11-12 20:44:07,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 150 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:07,651 INFO L231 Difference]: Finished difference. Result has 56 places, 80 transitions, 471 flow [2024-11-12 20:44:07,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=56, PETRI_TRANSITIONS=80} [2024-11-12 20:44:07,653 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2024-11-12 20:44:07,653 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 80 transitions, 471 flow [2024-11-12 20:44:07,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:07,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:07,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:07,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:44:07,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 20:44:07,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1070015041, now seen corresponding path program 1 times [2024-11-12 20:44:07,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:07,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28636040] [2024-11-12 20:44:07,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28636040] [2024-11-12 20:44:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28636040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141588825] [2024-11-12 20:44:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:07,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:44:07,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:44:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:44:07,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:07,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 80 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-12 20:44:07,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:07,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:07,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:10,097 INFO L124 PetriNetUnfolderBase]: 15658/23344 cut-off events. [2024-11-12 20:44:10,097 INFO L125 PetriNetUnfolderBase]: For 62275/62275 co-relation queries the response was YES. [2024-11-12 20:44:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79982 conditions, 23344 events. 15658/23344 cut-off events. For 62275/62275 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 150318 event pairs, 1078 based on Foata normal form. 1149/22826 useless extension candidates. Maximal degree in co-relation 79969. Up to 12242 conditions per place. [2024-11-12 20:44:10,327 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 97 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-11-12 20:44:10,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 133 transitions, 1014 flow [2024-11-12 20:44:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-12 20:44:10,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-12 20:44:10,330 INFO L175 Difference]: Start difference. First operand has 56 places, 80 transitions, 471 flow. Second operand 4 states and 142 transitions. [2024-11-12 20:44:10,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 133 transitions, 1014 flow [2024-11-12 20:44:10,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 133 transitions, 977 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:10,418 INFO L231 Difference]: Finished difference. Result has 60 places, 95 transitions, 721 flow [2024-11-12 20:44:10,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=60, PETRI_TRANSITIONS=95} [2024-11-12 20:44:10,419 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-11-12 20:44:10,420 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 95 transitions, 721 flow [2024-11-12 20:44:10,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-12 20:44:10,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:10,420 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:10,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:44:10,421 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:10,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1008266523, now seen corresponding path program 1 times [2024-11-12 20:44:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282782676] [2024-11-12 20:44:10,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282782676] [2024-11-12 20:44:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282782676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310985325] [2024-11-12 20:44:10,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:10,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:10,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:10,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:44:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:10,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:44:10,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:10,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310985325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:10,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-12 20:44:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194254245] [2024-11-12 20:44:10,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:10,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:44:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:44:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:44:10,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:10,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 95 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 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) [2024-11-12 20:44:10,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:10,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:10,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:17,518 INFO L124 PetriNetUnfolderBase]: 54296/82326 cut-off events. [2024-11-12 20:44:17,518 INFO L125 PetriNetUnfolderBase]: For 416217/416217 co-relation queries the response was YES. [2024-11-12 20:44:17,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310873 conditions, 82326 events. 54296/82326 cut-off events. For 416217/416217 co-relation queries the response was YES. Maximal size of possible extension queue 1624. Compared 598937 event pairs, 2547 based on Foata normal form. 6545/83418 useless extension candidates. Maximal degree in co-relation 310857. Up to 35551 conditions per place. [2024-11-12 20:44:18,428 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 210 selfloop transitions, 158 changer transitions 0/382 dead transitions. [2024-11-12 20:44:18,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 382 transitions, 3566 flow [2024-11-12 20:44:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:44:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:44:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2024-11-12 20:44:18,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841880341880342 [2024-11-12 20:44:18,430 INFO L175 Difference]: Start difference. First operand has 60 places, 95 transitions, 721 flow. Second operand 9 states and 367 transitions. [2024-11-12 20:44:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 382 transitions, 3566 flow [2024-11-12 20:44:18,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 382 transitions, 3559 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:18,774 INFO L231 Difference]: Finished difference. Result has 73 places, 255 transitions, 3175 flow [2024-11-12 20:44:18,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3175, PETRI_PLACES=73, PETRI_TRANSITIONS=255} [2024-11-12 20:44:18,775 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-11-12 20:44:18,775 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 255 transitions, 3175 flow [2024-11-12 20:44:18,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 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) [2024-11-12 20:44:18,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:18,776 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:18,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:44:18,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:18,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:18,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1727062582, now seen corresponding path program 1 times [2024-11-12 20:44:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:18,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514581496] [2024-11-12 20:44:18,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:18,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514581496] [2024-11-12 20:44:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514581496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876489388] [2024-11-12 20:44:19,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:19,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:44:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:44:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:44:19,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 255 transitions, 3175 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-12 20:44:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:27,427 INFO L124 PetriNetUnfolderBase]: 64387/97217 cut-off events. [2024-11-12 20:44:27,427 INFO L125 PetriNetUnfolderBase]: For 845413/845413 co-relation queries the response was YES. [2024-11-12 20:44:27,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442865 conditions, 97217 events. 64387/97217 cut-off events. For 845413/845413 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 720230 event pairs, 3389 based on Foata normal form. 834/92113 useless extension candidates. Maximal degree in co-relation 442842. Up to 55772 conditions per place. [2024-11-12 20:44:28,710 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 236 selfloop transitions, 129 changer transitions 0/379 dead transitions. [2024-11-12 20:44:28,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 379 transitions, 5125 flow [2024-11-12 20:44:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:44:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:44:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-11-12 20:44:28,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2024-11-12 20:44:28,712 INFO L175 Difference]: Start difference. First operand has 73 places, 255 transitions, 3175 flow. Second operand 5 states and 177 transitions. [2024-11-12 20:44:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 379 transitions, 5125 flow [2024-11-12 20:44:33,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 379 transitions, 5028 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:33,157 INFO L231 Difference]: Finished difference. Result has 79 places, 319 transitions, 4541 flow [2024-11-12 20:44:33,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4541, PETRI_PLACES=79, PETRI_TRANSITIONS=319} [2024-11-12 20:44:33,158 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-11-12 20:44:33,158 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 319 transitions, 4541 flow [2024-11-12 20:44:33,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-12 20:44:33,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:33,159 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:33,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:44:33,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-12 20:44:33,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash -438316244, now seen corresponding path program 1 times [2024-11-12 20:44:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31939974] [2024-11-12 20:44:33,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:33,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:33,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31939974] [2024-11-12 20:44:33,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31939974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998104338] [2024-11-12 20:44:33,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:33,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:33,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:33,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:33,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:44:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:33,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:44:33,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:33,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998104338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:33,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-12 20:44:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616074361] [2024-11-12 20:44:33,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:33,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:44:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:44:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:44:33,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-12 20:44:33,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 319 transitions, 4541 flow. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 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) [2024-11-12 20:44:33,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:33,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-12 20:44:33,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand