./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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/popl20-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:44,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:44,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:44,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:44,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:44,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:44,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:44,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:44,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:44,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:44,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:44,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:44,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:44,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:44,846 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:44,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:44,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:44,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:44,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:44,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:44,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:44,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:44,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:44,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:44,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:44,852 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:44,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:44,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:44,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:44,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:44,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:44,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:44,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:44,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:44,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:44,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:44,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:44,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:44,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:44,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:44,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:44,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:44,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:44,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:44,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-19 14:06:45,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:45,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:45,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:45,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:45,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:45,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-19 14:06:46,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:46,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:46,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-19 14:06:46,793 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1fb519eb/d02ff53fc3b8486d8de9259cae9808c7/FLAGebd16ccd5 [2024-11-19 14:06:47,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1fb519eb/d02ff53fc3b8486d8de9259cae9808c7 [2024-11-19 14:06:47,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:47,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:47,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:47,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:47,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:47,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4c42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47, skipping insertion in model container [2024-11-19 14:06:47,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:47,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:47,428 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:47,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:47,460 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:47,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47 WrapperNode [2024-11-19 14:06:47,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:47,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:47,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:47,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:47,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,488 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-11-19 14:06:47,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:47,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:47,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:47,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:47,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,512 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]. [2024-11-19 14:06:47,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:47,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:47,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:47,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:47,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (1/1) ... [2024-11-19 14:06:47,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:47,565 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) [2024-11-19 14:06:47,572 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 [2024-11-19 14:06:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:47,619 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:47,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:47,723 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:47,945 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:47,946 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:48,091 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:48,091 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 14:06:48,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:48 BoogieIcfgContainer [2024-11-19 14:06:48,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:48,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:48,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:48,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:48,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:47" (1/3) ... [2024-11-19 14:06:48,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7faa5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:48, skipping insertion in model container [2024-11-19 14:06:48,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:47" (2/3) ... [2024-11-19 14:06:48,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7faa5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:48, skipping insertion in model container [2024-11-19 14:06:48,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:48" (3/3) ... [2024-11-19 14:06:48,104 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-19 14:06:48,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:48,135 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 14:06:48,136 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:48,192 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:06:48,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-19 14:06:48,261 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-19 14:06:48,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:06:48,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 14:06:48,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-19 14:06:48,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-19 14:06:48,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:48,301 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;@587d8a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:48,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 14:06:48,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:48,311 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:06:48,311 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:06:48,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:48,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:06:48,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:48,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 244277289, now seen corresponding path program 1 times [2024-11-19 14:06:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:48,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980106426] [2024-11-19 14:06:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:48,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980106426] [2024-11-19 14:06:48,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980106426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:48,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372348441] [2024-11-19 14:06:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:48,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:48,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:48,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-19 14:06:48,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:48,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:48,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:48,802 INFO L124 PetriNetUnfolderBase]: 194/408 cut-off events. [2024-11-19 14:06:48,802 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-19 14:06:48,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 408 events. 194/408 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1825 event pairs, 77 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 718. Up to 289 conditions per place. [2024-11-19 14:06:48,812 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2024-11-19 14:06:48,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 145 flow [2024-11-19 14:06:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-19 14:06:48,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-19 14:06:48,824 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 59 transitions. [2024-11-19 14:06:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 145 flow [2024-11-19 14:06:48,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:48,830 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 76 flow [2024-11-19 14:06:48,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-19 14:06:48,838 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-11-19 14:06:48,838 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 76 flow [2024-11-19 14:06:48,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-19 14:06:48,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:48,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:48,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:48,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:48,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1472717044, now seen corresponding path program 1 times [2024-11-19 14:06:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390970223] [2024-11-19 14:06:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390970223] [2024-11-19 14:06:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390970223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587742359] [2024-11-19 14:06:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:48,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:48,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-19 14:06:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:48,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:49,196 INFO L124 PetriNetUnfolderBase]: 298/571 cut-off events. [2024-11-19 14:06:49,197 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-19 14:06:49,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 571 events. 298/571 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2638 event pairs, 127 based on Foata normal form. 18/490 useless extension candidates. Maximal degree in co-relation 733. Up to 420 conditions per place. [2024-11-19 14:06:49,204 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2024-11-19 14:06:49,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 232 flow [2024-11-19 14:06:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-19 14:06:49,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-19 14:06:49,206 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 79 transitions. [2024-11-19 14:06:49,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 232 flow [2024-11-19 14:06:49,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:49,208 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2024-11-19 14:06:49,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-19 14:06:49,209 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-19 14:06:49,209 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2024-11-19 14:06:49,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-19 14:06:49,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:49,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:49,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:06:49,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:49,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2077733453, now seen corresponding path program 1 times [2024-11-19 14:06:49,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:49,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132520789] [2024-11-19 14:06:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:49,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:49,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132520789] [2024-11-19 14:06:49,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132520789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:49,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:49,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242809480] [2024-11-19 14:06:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:49,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:49,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:49,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-19 14:06:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:49,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:49,409 INFO L124 PetriNetUnfolderBase]: 210/466 cut-off events. [2024-11-19 14:06:49,410 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-19 14:06:49,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 466 events. 210/466 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2278 event pairs, 122 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 863. Up to 262 conditions per place. [2024-11-19 14:06:49,415 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-19 14:06:49,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 228 flow [2024-11-19 14:06:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-19 14:06:49,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-19 14:06:49,417 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 3 states and 63 transitions. [2024-11-19 14:06:49,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 228 flow [2024-11-19 14:06:49,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:49,419 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 120 flow [2024-11-19 14:06:49,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-19 14:06:49,423 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-19 14:06:49,423 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 120 flow [2024-11-19 14:06:49,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-19 14:06:49,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:49,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:49,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:06:49,424 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:49,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1435994762, now seen corresponding path program 1 times [2024-11-19 14:06:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:49,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684593152] [2024-11-19 14:06:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684593152] [2024-11-19 14:06:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684593152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927821189] [2024-11-19 14:06:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:49,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:49,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:49,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 14:06:49,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:49,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:49,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:49,644 INFO L124 PetriNetUnfolderBase]: 261/559 cut-off events. [2024-11-19 14:06:49,644 INFO L125 PetriNetUnfolderBase]: For 468/470 co-relation queries the response was YES. [2024-11-19 14:06:49,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 559 events. 261/559 cut-off events. For 468/470 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2539 event pairs, 45 based on Foata normal form. 25/571 useless extension candidates. Maximal degree in co-relation 1203. Up to 236 conditions per place. [2024-11-19 14:06:49,650 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-19 14:06:49,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 265 flow [2024-11-19 14:06:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-19 14:06:49,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-19 14:06:49,652 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 120 flow. Second operand 4 states and 79 transitions. [2024-11-19 14:06:49,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 265 flow [2024-11-19 14:06:49,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:49,656 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 148 flow [2024-11-19 14:06:49,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-19 14:06:49,657 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-19 14:06:49,657 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 148 flow [2024-11-19 14:06:49,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 14:06:49,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:49,658 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:49,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:49,658 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:49,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -622260346, now seen corresponding path program 1 times [2024-11-19 14:06:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:49,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106250320] [2024-11-19 14:06:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106250320] [2024-11-19 14:06:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106250320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956942406] [2024-11-19 14:06:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:49,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:49,760 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) [2024-11-19 14:06:49,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:49,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:49,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:49,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956942406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:49,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-19 14:06:49,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793909921] [2024-11-19 14:06:49,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:49,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:49,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:49,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-19 14:06:49,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:49,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:49,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:49,950 INFO L124 PetriNetUnfolderBase]: 231/515 cut-off events. [2024-11-19 14:06:49,950 INFO L125 PetriNetUnfolderBase]: For 607/609 co-relation queries the response was YES. [2024-11-19 14:06:49,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 515 events. 231/515 cut-off events. For 607/609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2394 event pairs, 191 based on Foata normal form. 24/524 useless extension candidates. Maximal degree in co-relation 1057. Up to 405 conditions per place. [2024-11-19 14:06:49,954 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 24 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-19 14:06:49,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 180 flow [2024-11-19 14:06:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-19 14:06:49,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-19 14:06:49,958 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 148 flow. Second operand 3 states and 47 transitions. [2024-11-19 14:06:49,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 180 flow [2024-11-19 14:06:49,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:49,961 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 126 flow [2024-11-19 14:06:49,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-19 14:06:49,963 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-19 14:06:49,963 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 126 flow [2024-11-19 14:06:49,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-19 14:06:49,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:49,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:49,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:06:50,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:50,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:50,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1306455368, now seen corresponding path program 1 times [2024-11-19 14:06:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400857313] [2024-11-19 14:06:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400857313] [2024-11-19 14:06:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400857313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440227805] [2024-11-19 14:06:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:50,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:50,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:50,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2024-11-19 14:06:50,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:50,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:50,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:50,370 INFO L124 PetriNetUnfolderBase]: 445/852 cut-off events. [2024-11-19 14:06:50,370 INFO L125 PetriNetUnfolderBase]: For 593/629 co-relation queries the response was YES. [2024-11-19 14:06:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 852 events. 445/852 cut-off events. For 593/629 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3934 event pairs, 239 based on Foata normal form. 22/851 useless extension candidates. Maximal degree in co-relation 2213. Up to 522 conditions per place. [2024-11-19 14:06:50,378 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 53 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-19 14:06:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 378 flow [2024-11-19 14:06:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-19 14:06:50,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-19 14:06:50,382 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 126 flow. Second operand 4 states and 72 transitions. [2024-11-19 14:06:50,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 378 flow [2024-11-19 14:06:50,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:50,387 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 154 flow [2024-11-19 14:06:50,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-19 14:06:50,388 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-11-19 14:06:50,388 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 154 flow [2024-11-19 14:06:50,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2024-11-19 14:06:50,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:50,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:50,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:50,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:50,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash -991728855, now seen corresponding path program 1 times [2024-11-19 14:06:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:50,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308843587] [2024-11-19 14:06:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308843587] [2024-11-19 14:06:50,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308843587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:50,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173305566] [2024-11-19 14:06:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:50,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:50,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:50,478 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) [2024-11-19 14:06:50,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:06:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:50,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:50,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:50,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173305566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:50,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:50,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:06:50,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270013318] [2024-11-19 14:06:50,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:50,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:50,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:50,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-19 14:06:50,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:50,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:50,795 INFO L124 PetriNetUnfolderBase]: 425/834 cut-off events. [2024-11-19 14:06:50,795 INFO L125 PetriNetUnfolderBase]: For 811/847 co-relation queries the response was YES. [2024-11-19 14:06:50,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 834 events. 425/834 cut-off events. For 811/847 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3832 event pairs, 48 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 2383. Up to 294 conditions per place. [2024-11-19 14:06:50,801 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 72 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2024-11-19 14:06:50,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 520 flow [2024-11-19 14:06:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-11-19 14:06:50,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-19 14:06:50,803 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 154 flow. Second operand 6 states and 104 transitions. [2024-11-19 14:06:50,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 84 transitions, 520 flow [2024-11-19 14:06:50,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 84 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:50,809 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 159 flow [2024-11-19 14:06:50,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-19 14:06:50,810 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-11-19 14:06:50,810 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 159 flow [2024-11-19 14:06:50,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-19 14:06:50,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:50,810 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 14:06:50,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:06:51,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-19 14:06:51,011 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:51,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash -678823162, now seen corresponding path program 1 times [2024-11-19 14:06:51,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:51,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782121708] [2024-11-19 14:06:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:51,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782121708] [2024-11-19 14:06:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782121708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224119185] [2024-11-19 14:06:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:51,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:51,076 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) [2024-11-19 14:06:51,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:51,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:51,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:51,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:51,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224119185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:51,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:51,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:06:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319679428] [2024-11-19 14:06:51,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:51,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:51,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:51,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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) [2024-11-19 14:06:51,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:51,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:51,641 INFO L124 PetriNetUnfolderBase]: 889/1728 cut-off events. [2024-11-19 14:06:51,642 INFO L125 PetriNetUnfolderBase]: For 2206/2282 co-relation queries the response was YES. [2024-11-19 14:06:51,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 1728 events. 889/1728 cut-off events. For 2206/2282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8595 event pairs, 136 based on Foata normal form. 78/1804 useless extension candidates. Maximal degree in co-relation 5183. Up to 606 conditions per place. [2024-11-19 14:06:51,655 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-19 14:06:51,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 153 transitions, 973 flow [2024-11-19 14:06:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-19 14:06:51,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-19 14:06:51,657 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 159 flow. Second operand 10 states and 188 transitions. [2024-11-19 14:06:51,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 153 transitions, 973 flow [2024-11-19 14:06:51,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 153 transitions, 946 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:51,664 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-11-19 14:06:51,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-19 14:06:51,665 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-19 14:06:51,665 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-11-19 14:06:51,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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) [2024-11-19 14:06:51,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:51,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:51,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:06:51,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:51,867 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:51,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1803619285, now seen corresponding path program 1 times [2024-11-19 14:06:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722145842] [2024-11-19 14:06:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:51,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722145842] [2024-11-19 14:06:51,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722145842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537578477] [2024-11-19 14:06:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:51,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:51,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:51,955 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) [2024-11-19 14:06:51,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:52,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:52,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537578477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-19 14:06:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252645570] [2024-11-19 14:06:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:52,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:52,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:52,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:52,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-19 14:06:52,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:52,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:52,193 INFO L124 PetriNetUnfolderBase]: 749/1530 cut-off events. [2024-11-19 14:06:52,193 INFO L125 PetriNetUnfolderBase]: For 2437/2469 co-relation queries the response was YES. [2024-11-19 14:06:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4697 conditions, 1530 events. 749/1530 cut-off events. For 2437/2469 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7763 event pairs, 585 based on Foata normal form. 62/1589 useless extension candidates. Maximal degree in co-relation 4681. Up to 1240 conditions per place. [2024-11-19 14:06:52,202 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2024-11-19 14:06:52,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 296 flow [2024-11-19 14:06:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-19 14:06:52,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-19 14:06:52,204 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 3 states and 46 transitions. [2024-11-19 14:06:52,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 296 flow [2024-11-19 14:06:52,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 286 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:52,209 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 216 flow [2024-11-19 14:06:52,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-11-19 14:06:52,210 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-11-19 14:06:52,210 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 216 flow [2024-11-19 14:06:52,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-19 14:06:52,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:52,211 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 14:06:52,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:06:52,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:52,411 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:52,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 485978698, now seen corresponding path program 1 times [2024-11-19 14:06:52,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182183953] [2024-11-19 14:06:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:52,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182183953] [2024-11-19 14:06:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182183953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903693639] [2024-11-19 14:06:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:52,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:52,476 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) [2024-11-19 14:06:52,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:52,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 14:06:52,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903693639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:52,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 14:06:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65181540] [2024-11-19 14:06:52,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 14:06:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 14:06:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:06:52,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:52,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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) [2024-11-19 14:06:52,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:52,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:52,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:53,015 INFO L124 PetriNetUnfolderBase]: 1462/3039 cut-off events. [2024-11-19 14:06:53,016 INFO L125 PetriNetUnfolderBase]: For 5330/5464 co-relation queries the response was YES. [2024-11-19 14:06:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 3039 events. 1462/3039 cut-off events. For 5330/5464 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17568 event pairs, 85 based on Foata normal form. 198/3236 useless extension candidates. Maximal degree in co-relation 9105. Up to 461 conditions per place. [2024-11-19 14:06:53,037 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 148 selfloop transitions, 14 changer transitions 2/170 dead transitions. [2024-11-19 14:06:53,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 170 transitions, 1165 flow [2024-11-19 14:06:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:06:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:06:53,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-11-19 14:06:53,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-11-19 14:06:53,039 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 216 flow. Second operand 9 states and 191 transitions. [2024-11-19 14:06:53,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 170 transitions, 1165 flow [2024-11-19 14:06:53,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:53,056 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 354 flow [2024-11-19 14:06:53,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-19 14:06:53,058 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-11-19 14:06:53,058 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 354 flow [2024-11-19 14:06:53,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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) [2024-11-19 14:06:53,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:53,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:53,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:06:53,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 14:06:53,264 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:53,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1414210555, now seen corresponding path program 1 times [2024-11-19 14:06:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:53,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965405436] [2024-11-19 14:06:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965405436] [2024-11-19 14:06:53,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965405436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556052310] [2024-11-19 14:06:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:53,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:53,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:53,335 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) [2024-11-19 14:06:53,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:06:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:53,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:53,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:53,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556052310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:06:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428163379] [2024-11-19 14:06:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:53,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:53,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:53,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:53,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:53,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:53,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:53,854 INFO L124 PetriNetUnfolderBase]: 1600/3112 cut-off events. [2024-11-19 14:06:53,854 INFO L125 PetriNetUnfolderBase]: For 7192/7230 co-relation queries the response was YES. [2024-11-19 14:06:53,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10449 conditions, 3112 events. 1600/3112 cut-off events. For 7192/7230 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17561 event pairs, 251 based on Foata normal form. 111/3111 useless extension candidates. Maximal degree in co-relation 10424. Up to 897 conditions per place. [2024-11-19 14:06:53,880 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 144 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2024-11-19 14:06:53,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 1446 flow [2024-11-19 14:06:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-19 14:06:53,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 14:06:53,881 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 354 flow. Second operand 6 states and 96 transitions. [2024-11-19 14:06:53,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 1446 flow [2024-11-19 14:06:53,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 1389 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:53,894 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 350 flow [2024-11-19 14:06:53,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-11-19 14:06:53,894 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-11-19 14:06:53,895 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 350 flow [2024-11-19 14:06:53,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:53,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:53,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:53,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:06:54,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:54,096 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:54,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -370936087, now seen corresponding path program 1 times [2024-11-19 14:06:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303614188] [2024-11-19 14:06:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:54,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:54,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303614188] [2024-11-19 14:06:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303614188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:54,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123032712] [2024-11-19 14:06:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:54,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:54,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:54,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:54,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:06:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:54,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:54,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:54,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123032712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:54,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:06:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145667237] [2024-11-19 14:06:54,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:54,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 350 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2024-11-19 14:06:54,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:54,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:54,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:55,124 INFO L124 PetriNetUnfolderBase]: 2870/5405 cut-off events. [2024-11-19 14:06:55,124 INFO L125 PetriNetUnfolderBase]: For 13472/13578 co-relation queries the response was YES. [2024-11-19 14:06:55,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 5405 events. 2870/5405 cut-off events. For 13472/13578 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 32193 event pairs, 629 based on Foata normal form. 243/5647 useless extension candidates. Maximal degree in co-relation 19130. Up to 1842 conditions per place. [2024-11-19 14:06:55,167 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 243 selfloop transitions, 13 changer transitions 6/266 dead transitions. [2024-11-19 14:06:55,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 266 transitions, 2462 flow [2024-11-19 14:06:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-19 14:06:55,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-11-19 14:06:55,169 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 350 flow. Second operand 10 states and 169 transitions. [2024-11-19 14:06:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 266 transitions, 2462 flow [2024-11-19 14:06:55,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 266 transitions, 2432 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:55,191 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 413 flow [2024-11-19 14:06:55,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-19 14:06:55,191 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-11-19 14:06:55,191 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 413 flow [2024-11-19 14:06:55,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2024-11-19 14:06:55,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:55,192 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-19 14:06:55,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:06:55,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:55,393 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:55,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1310678851, now seen corresponding path program 2 times [2024-11-19 14:06:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:55,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502068898] [2024-11-19 14:06:55,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:55,457 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:55,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 14:06:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502068898] [2024-11-19 14:06:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502068898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872632155] [2024-11-19 14:06:55,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:55,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:55,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:55,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:06:55,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:55,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:55,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:55,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 14:06:55,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 14:06:55,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872632155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:55,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:55,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:06:55,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665610104] [2024-11-19 14:06:55,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:55,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:55,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-19 14:06:55,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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) [2024-11-19 14:06:55,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:55,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-19 14:06:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:56,380 INFO L124 PetriNetUnfolderBase]: 3277/5989 cut-off events. [2024-11-19 14:06:56,380 INFO L125 PetriNetUnfolderBase]: For 18054/18091 co-relation queries the response was YES. [2024-11-19 14:06:56,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 5989 events. 3277/5989 cut-off events. For 18054/18091 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 34495 event pairs, 843 based on Foata normal form. 204/6193 useless extension candidates. Maximal degree in co-relation 21054. Up to 2193 conditions per place. [2024-11-19 14:06:56,417 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 96 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-11-19 14:06:56,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 112 transitions, 955 flow [2024-11-19 14:06:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-19 14:06:56,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-19 14:06:56,419 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 413 flow. Second operand 5 states and 69 transitions. [2024-11-19 14:06:56,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 112 transitions, 955 flow [2024-11-19 14:06:56,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 912 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-19 14:06:56,460 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 420 flow [2024-11-19 14:06:56,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-19 14:06:56,461 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-11-19 14:06:56,461 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 420 flow [2024-11-19 14:06:56,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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) [2024-11-19 14:06:56,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:56,462 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-19 14:06:56,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:06:56,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 14:06:56,663 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:56,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash 424746634, now seen corresponding path program 2 times [2024-11-19 14:06:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390278516] [2024-11-19 14:06:56,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:56,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:06:56,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:56,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390278516] [2024-11-19 14:06:56,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390278516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:56,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736538815] [2024-11-19 14:06:56,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:56,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:56,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:56,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:06:56,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:06:56,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:56,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 14:06:56,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736538815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:57,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:57,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-19 14:06:57,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471441605] [2024-11-19 14:06:57,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:57,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:06:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:06:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:06:57,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:06:57,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 420 flow. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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) [2024-11-19 14:06:57,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:57,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:06:57,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:58,941 INFO L124 PetriNetUnfolderBase]: 7640/14670 cut-off events. [2024-11-19 14:06:58,942 INFO L125 PetriNetUnfolderBase]: For 63887/64063 co-relation queries the response was YES. [2024-11-19 14:06:58,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52778 conditions, 14670 events. 7640/14670 cut-off events. For 63887/64063 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 99626 event pairs, 210 based on Foata normal form. 521/15188 useless extension candidates. Maximal degree in co-relation 52752. Up to 2935 conditions per place. [2024-11-19 14:06:59,036 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 396 selfloop transitions, 58 changer transitions 4/463 dead transitions. [2024-11-19 14:06:59,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 463 transitions, 3735 flow [2024-11-19 14:06:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:06:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:06:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 383 transitions. [2024-11-19 14:06:59,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7040441176470589 [2024-11-19 14:06:59,038 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 420 flow. Second operand 17 states and 383 transitions. [2024-11-19 14:06:59,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 463 transitions, 3735 flow [2024-11-19 14:06:59,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 463 transitions, 3645 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:59,110 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 1006 flow [2024-11-19 14:06:59,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1006, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-11-19 14:06:59,112 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-11-19 14:06:59,112 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 1006 flow [2024-11-19 14:06:59,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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) [2024-11-19 14:06:59,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:59,113 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:59,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:06:59,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 14:06:59,314 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:06:59,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash -374252390, now seen corresponding path program 2 times [2024-11-19 14:06:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:59,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771945271] [2024-11-19 14:06:59,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:59,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:59,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 14:06:59,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771945271] [2024-11-19 14:06:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771945271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229681560] [2024-11-19 14:06:59,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:59,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:59,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:59,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:06:59,409 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:59,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:59,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:59,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 14:06:59,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 14:06:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229681560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:59,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:06:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004028635] [2024-11-19 14:06:59,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:59,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:59,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:06:59,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 1006 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-19 14:06:59,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:59,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:06:59,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:01,421 INFO L124 PetriNetUnfolderBase]: 7509/14456 cut-off events. [2024-11-19 14:07:01,421 INFO L125 PetriNetUnfolderBase]: For 61418/61418 co-relation queries the response was YES. [2024-11-19 14:07:01,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54892 conditions, 14456 events. 7509/14456 cut-off events. For 61418/61418 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 99481 event pairs, 1232 based on Foata normal form. 274/14729 useless extension candidates. Maximal degree in co-relation 54851. Up to 5186 conditions per place. [2024-11-19 14:07:01,510 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 172 selfloop transitions, 15 changer transitions 6/197 dead transitions. [2024-11-19 14:07:01,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 197 transitions, 2413 flow [2024-11-19 14:07:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-19 14:07:01,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-11-19 14:07:01,511 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 1006 flow. Second operand 5 states and 71 transitions. [2024-11-19 14:07:01,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 197 transitions, 2413 flow [2024-11-19 14:07:01,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 197 transitions, 2187 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-11-19 14:07:01,638 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 944 flow [2024-11-19 14:07:01,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2024-11-19 14:07:01,638 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2024-11-19 14:07:01,639 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 944 flow [2024-11-19 14:07:01,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-19 14:07:01,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:01,639 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-19 14:07:01,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:07:01,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 14:07:01,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:07:01,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 245536522, now seen corresponding path program 3 times [2024-11-19 14:07:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148082433] [2024-11-19 14:07:01,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:07:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:01,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-19 14:07:01,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148082433] [2024-11-19 14:07:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148082433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697664886] [2024-11-19 14:07:02,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:07:02,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:02,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:02,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:02,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:07:02,425 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-19 14:07:02,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:02,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 14:07:02,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:02,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:03,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697664886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:03,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:03,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-19 14:07:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461648585] [2024-11-19 14:07:03,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:03,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 14:07:03,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 14:07:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 14:07:03,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:07:03,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 944 flow. Second operand has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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) [2024-11-19 14:07:03,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:03,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:07:03,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:07,367 INFO L124 PetriNetUnfolderBase]: 14424/28891 cut-off events. [2024-11-19 14:07:07,367 INFO L125 PetriNetUnfolderBase]: For 302256/302260 co-relation queries the response was YES. [2024-11-19 14:07:07,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109915 conditions, 28891 events. 14424/28891 cut-off events. For 302256/302260 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 206725 event pairs, 259 based on Foata normal form. 950/29838 useless extension candidates. Maximal degree in co-relation 109879. Up to 5643 conditions per place. [2024-11-19 14:07:07,638 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 749 selfloop transitions, 214 changer transitions 0/967 dead transitions. [2024-11-19 14:07:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 967 transitions, 8929 flow [2024-11-19 14:07:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 14:07:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 14:07:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 705 transitions. [2024-11-19 14:07:07,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676136363636364 [2024-11-19 14:07:07,642 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 944 flow. Second operand 33 states and 705 transitions. [2024-11-19 14:07:07,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 967 transitions, 8929 flow [2024-11-19 14:07:07,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 967 transitions, 8370 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:07:07,810 INFO L231 Difference]: Finished difference. Result has 156 places, 258 transitions, 3073 flow [2024-11-19 14:07:07,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3073, PETRI_PLACES=156, PETRI_TRANSITIONS=258} [2024-11-19 14:07:07,811 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 123 predicate places. [2024-11-19 14:07:07,811 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 258 transitions, 3073 flow [2024-11-19 14:07:07,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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) [2024-11-19 14:07:07,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:07,812 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-19 14:07:07,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:08,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:07:08,013 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:07:08,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1266550794, now seen corresponding path program 4 times [2024-11-19 14:07:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:08,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997993896] [2024-11-19 14:07:08,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:07:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:08,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:07:08,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:09,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997993896] [2024-11-19 14:07:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997993896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342217277] [2024-11-19 14:07:09,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:07:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:09,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:09,797 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:09,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:07:09,895 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:07:09,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:09,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-19 14:07:09,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:10,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:11,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342217277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:11,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:11,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-19 14:07:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989845213] [2024-11-19 14:07:11,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:11,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-19 14:07:11,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-19 14:07:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-19 14:07:11,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:07:11,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 258 transitions, 3073 flow. Second operand has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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) [2024-11-19 14:07:11,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:11,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:07:11,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:30,864 INFO L124 PetriNetUnfolderBase]: 38349/77666 cut-off events. [2024-11-19 14:07:30,864 INFO L125 PetriNetUnfolderBase]: For 2678184/2678188 co-relation queries the response was YES. [2024-11-19 14:07:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306328 conditions, 77666 events. 38349/77666 cut-off events. For 2678184/2678188 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 597009 event pairs, 671 based on Foata normal form. 1846/79509 useless extension candidates. Maximal degree in co-relation 306261. Up to 15727 conditions per place. [2024-11-19 14:07:32,403 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 1485 selfloop transitions, 786 changer transitions 0/2275 dead transitions. [2024-11-19 14:07:32,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 2275 transitions, 22603 flow [2024-11-19 14:07:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-19 14:07:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-19 14:07:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1409 transitions. [2024-11-19 14:07:32,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774038461538462 [2024-11-19 14:07:32,409 INFO L175 Difference]: Start difference. First operand has 156 places, 258 transitions, 3073 flow. Second operand 65 states and 1409 transitions. [2024-11-19 14:07:32,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 2275 transitions, 22603 flow [2024-11-19 14:07:33,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 2275 transitions, 20777 flow, removed 873 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:33,125 INFO L231 Difference]: Finished difference. Result has 275 places, 830 transitions, 10646 flow [2024-11-19 14:07:33,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=10646, PETRI_PLACES=275, PETRI_TRANSITIONS=830} [2024-11-19 14:07:33,126 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 242 predicate places. [2024-11-19 14:07:33,127 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 830 transitions, 10646 flow [2024-11-19 14:07:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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) [2024-11-19 14:07:33,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:33,129 INFO L204 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2024-11-19 14:07:33,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:07:33,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:07:33,330 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:07:33,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash -870913526, now seen corresponding path program 5 times [2024-11-19 14:07:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099857559] [2024-11-19 14:07:33,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:07:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:33,579 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-19 14:07:33,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099857559] [2024-11-19 14:07:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099857559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958182789] [2024-11-19 14:07:38,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:07:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:38,099 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:38,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:07:38,342 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-19 14:07:38,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:38,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-19 14:07:38,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:38,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958182789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:42,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2024-11-19 14:07:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245240433] [2024-11-19 14:07:42,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:42,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-19 14:07:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-19 14:07:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2024-11-19 14:07:42,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 14:07:42,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 830 transitions, 10646 flow. Second operand has 128 states, 128 states have (on average 11.96875) internal successors, (1532), 128 states have internal predecessors, (1532), 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) [2024-11-19 14:07:42,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:42,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 14:07:42,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand