./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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.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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:10:20,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:10:20,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:10:20,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:10:20,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:10:20,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:10:20,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:10:20,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:10:20,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:10:20,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:10:20,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:10:20,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:10:20,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:10:20,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:10:20,639 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:10:20,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:10:20,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:10:20,639 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:10:20,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:10:20,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:10:20,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:10:20,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:10:20,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:10:20,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:10:20,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:10:20,641 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:10:20,642 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:10:20,642 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:10:20,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:10:20,642 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:10:20,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:10:20,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:10:20,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:10:20,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:10:20,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:10:20,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:10:20,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:10:20,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:10:20,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:10:20,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:10:20,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:10:20,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:10:20,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:10:20,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:10:20,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-09 15:10:20,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:10:20,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:10:20,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:10:20,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:10:20,879 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:10:20,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-09 15:10:22,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:10:22,323 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:10:22,324 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-09 15:10:22,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d36135a/e8dc32947a614736ae1ae0423a0c80e7/FLAGdc2fd23db [2024-11-09 15:10:22,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d36135a/e8dc32947a614736ae1ae0423a0c80e7 [2024-11-09 15:10:22,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:10:22,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:10:22,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:10:22,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:10:22,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:10:22,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:22,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ceb7880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22, skipping insertion in model container [2024-11-09 15:10:22,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:22,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:10:22,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:10:22,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:10:22,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:10:22,986 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:10:22,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22 WrapperNode [2024-11-09 15:10:22,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:10:22,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:10:22,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:10:22,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:10:22,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,015 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-09 15:10:23,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:10:23,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:10:23,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:10:23,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:10:23,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,041 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]. [2024-11-09 15:10:23,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:10:23,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:10:23,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:10:23,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:10:23,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (1/1) ... [2024-11-09 15:10:23,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:10:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:23,085 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) [2024-11-09 15:10:23,089 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 [2024-11-09 15:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:10:23,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:10:23,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:10:23,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:10:23,124 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:10:23,192 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:10:23,194 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:10:23,327 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:10:23,327 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:10:23,450 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:10:23,450 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:10:23,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:10:23 BoogieIcfgContainer [2024-11-09 15:10:23,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:10:23,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:10:23,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:10:23,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:10:23,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:10:22" (1/3) ... [2024-11-09 15:10:23,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f419f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:10:23, skipping insertion in model container [2024-11-09 15:10:23,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:22" (2/3) ... [2024-11-09 15:10:23,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f419f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:10:23, skipping insertion in model container [2024-11-09 15:10:23,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:10:23" (3/3) ... [2024-11-09 15:10:23,466 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-09 15:10:23,482 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:10:23,482 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 15:10:23,482 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:10:23,522 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:10:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2024-11-09 15:10:23,569 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-09 15:10:23,569 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:10:23,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 104 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-09 15:10:23,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2024-11-09 15:10:23,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 73 flow [2024-11-09 15:10:23,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:10:23,587 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;@1cf0afd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:10:23,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 15:10:23,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:10:23,595 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-09 15:10:23,595 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:10:23,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:23,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:10:23,600 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:23,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash 639212003, now seen corresponding path program 1 times [2024-11-09 15:10:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249638979] [2024-11-09 15:10:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249638979] [2024-11-09 15:10:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249638979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:10:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648915268] [2024-11-09 15:10:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:23,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:10:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:10:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:10:23,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:23,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:23,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:24,035 INFO L124 PetriNetUnfolderBase]: 478/740 cut-off events. [2024-11-09 15:10:24,035 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 15:10:24,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 740 events. 478/740 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3373 event pairs, 68 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1350. Up to 631 conditions per place. [2024-11-09 15:10:24,044 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-11-09 15:10:24,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2024-11-09 15:10:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:10:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:10:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-09 15:10:24,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-09 15:10:24,057 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2024-11-09 15:10:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2024-11-09 15:10:24,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:10:24,063 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 115 flow [2024-11-09 15:10:24,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-09 15:10:24,070 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-11-09 15:10:24,071 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 115 flow [2024-11-09 15:10:24,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:24,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:24,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:24,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:10:24,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:24,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728535, now seen corresponding path program 1 times [2024-11-09 15:10:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000683039] [2024-11-09 15:10:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000683039] [2024-11-09 15:10:24,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000683039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797576556] [2024-11-09 15:10:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:24,194 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) [2024-11-09 15:10:24,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:10:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:24,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:10:24,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:10:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797576556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:10:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-09 15:10:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355008495] [2024-11-09 15:10:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:24,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:10:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:10:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:10:24,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:24,378 INFO L124 PetriNetUnfolderBase]: 294/495 cut-off events. [2024-11-09 15:10:24,378 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-09 15:10:24,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 495 events. 294/495 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2329 event pairs, 137 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 488. Up to 432 conditions per place. [2024-11-09 15:10:24,384 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2024-11-09 15:10:24,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 155 flow [2024-11-09 15:10:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:10:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:10:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-09 15:10:24,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-09 15:10:24,388 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 115 flow. Second operand 3 states and 58 transitions. [2024-11-09 15:10:24,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 155 flow [2024-11-09 15:10:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:24,391 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2024-11-09 15:10:24,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-11-09 15:10:24,392 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-09 15:10:24,393 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2024-11-09 15:10:24,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:24,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:24,394 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:24,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:10:24,594 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 [2024-11-09 15:10:24,595 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:24,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728536, now seen corresponding path program 1 times [2024-11-09 15:10:24,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:24,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728264625] [2024-11-09 15:10:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:24,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728264625] [2024-11-09 15:10:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728264625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101504398] [2024-11-09 15:10:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:24,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:24,694 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) [2024-11-09 15:10:24,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:10:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:24,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:10:24,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101504398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:24,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 15:10:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669194267] [2024-11-09 15:10:24,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:24,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:10:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:10:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:10:24,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:24,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-09 15:10:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:24,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:25,097 INFO L124 PetriNetUnfolderBase]: 947/1628 cut-off events. [2024-11-09 15:10:25,098 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-09 15:10:25,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1628 events. 947/1628 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8004 event pairs, 29 based on Foata normal form. 0/1210 useless extension candidates. Maximal degree in co-relation 3712. Up to 731 conditions per place. [2024-11-09 15:10:25,107 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-11-09 15:10:25,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 97 transitions, 469 flow [2024-11-09 15:10:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:10:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:10:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-09 15:10:25,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-09 15:10:25,112 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 7 states and 186 transitions. [2024-11-09 15:10:25,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 97 transitions, 469 flow [2024-11-09 15:10:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 97 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:25,114 INFO L231 Difference]: Finished difference. Result has 43 places, 54 transitions, 318 flow [2024-11-09 15:10:25,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=43, PETRI_TRANSITIONS=54} [2024-11-09 15:10:25,115 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-09 15:10:25,116 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 54 transitions, 318 flow [2024-11-09 15:10:25,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-09 15:10:25,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:25,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:25,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:10:25,317 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 [2024-11-09 15:10:25,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:25,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2061984144, now seen corresponding path program 1 times [2024-11-09 15:10:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549175123] [2024-11-09 15:10:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:25,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549175123] [2024-11-09 15:10:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549175123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:10:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69949478] [2024-11-09 15:10:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:25,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:25,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:25,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 318 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) [2024-11-09 15:10:25,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:25,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:25,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:25,571 INFO L124 PetriNetUnfolderBase]: 1512/2671 cut-off events. [2024-11-09 15:10:25,571 INFO L125 PetriNetUnfolderBase]: For 6560/6560 co-relation queries the response was YES. [2024-11-09 15:10:25,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8376 conditions, 2671 events. 1512/2671 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14698 event pairs, 98 based on Foata normal form. 131/2592 useless extension candidates. Maximal degree in co-relation 8363. Up to 1247 conditions per place. [2024-11-09 15:10:25,588 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 63 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-11-09 15:10:25,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 88 transitions, 675 flow [2024-11-09 15:10:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-09 15:10:25,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:10:25,590 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 318 flow. Second operand 4 states and 96 transitions. [2024-11-09 15:10:25,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 88 transitions, 675 flow [2024-11-09 15:10:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 650 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:25,598 INFO L231 Difference]: Finished difference. Result has 47 places, 64 transitions, 486 flow [2024-11-09 15:10:25,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=47, PETRI_TRANSITIONS=64} [2024-11-09 15:10:25,598 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-09 15:10:25,598 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 64 transitions, 486 flow [2024-11-09 15:10:25,599 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) [2024-11-09 15:10:25,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:25,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:25,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:10:25,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:25,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 373722710, now seen corresponding path program 1 times [2024-11-09 15:10:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034778577] [2024-11-09 15:10:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:25,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:25,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034778577] [2024-11-09 15:10:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034778577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:25,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733949633] [2024-11-09 15:10:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:25,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:25,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:25,663 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) [2024-11-09 15:10:25,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:10:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:25,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:10:25,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:25,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733949633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:25,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:25,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 15:10:25,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483128439] [2024-11-09 15:10:25,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:25,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:10:25,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:10:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:10:25,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:25,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 64 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-09 15:10:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:25,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:26,715 INFO L124 PetriNetUnfolderBase]: 5374/9675 cut-off events. [2024-11-09 15:10:26,715 INFO L125 PetriNetUnfolderBase]: For 41278/41278 co-relation queries the response was YES. [2024-11-09 15:10:26,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32642 conditions, 9675 events. 5374/9675 cut-off events. For 41278/41278 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 63589 event pairs, 322 based on Foata normal form. 683/9647 useless extension candidates. Maximal degree in co-relation 32626. Up to 3382 conditions per place. [2024-11-09 15:10:26,805 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 140 selfloop transitions, 99 changer transitions 0/249 dead transitions. [2024-11-09 15:10:26,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 249 transitions, 2350 flow [2024-11-09 15:10:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:10:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:10:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-09 15:10:26,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-09 15:10:26,812 INFO L175 Difference]: Start difference. First operand has 47 places, 64 transitions, 486 flow. Second operand 9 states and 246 transitions. [2024-11-09 15:10:26,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 249 transitions, 2350 flow [2024-11-09 15:10:26,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 249 transitions, 2345 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:26,838 INFO L231 Difference]: Finished difference. Result has 60 places, 161 transitions, 2029 flow [2024-11-09 15:10:26,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=60, PETRI_TRANSITIONS=161} [2024-11-09 15:10:26,841 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2024-11-09 15:10:26,841 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 161 transitions, 2029 flow [2024-11-09 15:10:26,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-09 15:10:26,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:26,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:26,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:27,042 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 [2024-11-09 15:10:27,043 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:27,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1092518769, now seen corresponding path program 1 times [2024-11-09 15:10:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514560094] [2024-11-09 15:10:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:27,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514560094] [2024-11-09 15:10:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514560094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946629446] [2024-11-09 15:10:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:27,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:27,107 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) [2024-11-09 15:10:27,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:10:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:27,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:10:27,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:27,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946629446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:27,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 15:10:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226435496] [2024-11-09 15:10:27,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:27,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:10:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:10:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:10:27,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 161 transitions, 2029 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-09 15:10:27,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:29,498 INFO L124 PetriNetUnfolderBase]: 14061/26142 cut-off events. [2024-11-09 15:10:29,498 INFO L125 PetriNetUnfolderBase]: For 245195/245195 co-relation queries the response was YES. [2024-11-09 15:10:29,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95669 conditions, 26142 events. 14061/26142 cut-off events. For 245195/245195 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 208426 event pairs, 447 based on Foata normal form. 2675/26906 useless extension candidates. Maximal degree in co-relation 95646. Up to 8565 conditions per place. [2024-11-09 15:10:29,683 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 216 selfloop transitions, 308 changer transitions 0/534 dead transitions. [2024-11-09 15:10:29,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 534 transitions, 7270 flow [2024-11-09 15:10:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:10:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:10:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-09 15:10:29,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-09 15:10:29,685 INFO L175 Difference]: Start difference. First operand has 60 places, 161 transitions, 2029 flow. Second operand 9 states and 246 transitions. [2024-11-09 15:10:29,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 534 transitions, 7270 flow [2024-11-09 15:10:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 534 transitions, 6857 flow, removed 204 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:29,932 INFO L231 Difference]: Finished difference. Result has 73 places, 435 transitions, 6845 flow [2024-11-09 15:10:29,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=73, PETRI_TRANSITIONS=435} [2024-11-09 15:10:29,934 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2024-11-09 15:10:29,935 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 435 transitions, 6845 flow [2024-11-09 15:10:29,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-09 15:10:29,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:29,935 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:29,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:30,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:30,140 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:30,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 395103729, now seen corresponding path program 1 times [2024-11-09 15:10:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751522439] [2024-11-09 15:10:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751522439] [2024-11-09 15:10:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751522439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587841883] [2024-11-09 15:10:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:30,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:10:30,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:10:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:30,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:10:30,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:30,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587841883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:30,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:30,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:10:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051820247] [2024-11-09 15:10:30,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:30,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:10:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:10:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:10:30,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:30,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 435 transitions, 6845 flow. Second operand has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 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) [2024-11-09 15:10:30,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:30,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:30,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:41,727 INFO L124 PetriNetUnfolderBase]: 49907/93718 cut-off events. [2024-11-09 15:10:41,727 INFO L125 PetriNetUnfolderBase]: For 1179026/1179026 co-relation queries the response was YES. [2024-11-09 15:10:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379418 conditions, 93718 events. 49907/93718 cut-off events. For 1179026/1179026 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 888015 event pairs, 2628 based on Foata normal form. 3905/90336 useless extension candidates. Maximal degree in co-relation 379388. Up to 26422 conditions per place. [2024-11-09 15:10:42,663 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 535 selfloop transitions, 1465 changer transitions 0/2010 dead transitions. [2024-11-09 15:10:42,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 2010 transitions, 34019 flow [2024-11-09 15:10:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 15:10:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 15:10:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 366 transitions. [2024-11-09 15:10:42,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2024-11-09 15:10:42,669 INFO L175 Difference]: Start difference. First operand has 73 places, 435 transitions, 6845 flow. Second operand 13 states and 366 transitions. [2024-11-09 15:10:42,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 2010 transitions, 34019 flow [2024-11-09 15:10:48,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 2010 transitions, 32712 flow, removed 651 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:48,058 INFO L231 Difference]: Finished difference. Result has 94 places, 1733 transitions, 32338 flow [2024-11-09 15:10:48,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6648, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32338, PETRI_PLACES=94, PETRI_TRANSITIONS=1733} [2024-11-09 15:10:48,059 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 59 predicate places. [2024-11-09 15:10:48,060 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 1733 transitions, 32338 flow [2024-11-09 15:10:48,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 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) [2024-11-09 15:10:48,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:48,060 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:48,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:48,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:48,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:10:48,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1832964784, now seen corresponding path program 1 times [2024-11-09 15:10:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227431497] [2024-11-09 15:10:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227431497] [2024-11-09 15:10:48,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227431497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471308123] [2024-11-09 15:10:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:48,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:48,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:10:48,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:10:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:48,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 15:10:48,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:48,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471308123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:48,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:48,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 15:10:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090465924] [2024-11-09 15:10:48,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:48,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:10:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:10:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:10:48,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-09 15:10:48,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1733 transitions, 32338 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 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) [2024-11-09 15:10:48,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:48,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-09 15:10:48,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand