./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/reducercommutativity/sep10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:02:58,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:02:58,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:02:58,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:02:58,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:02:58,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:02:58,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:02:58,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:02:58,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:02:58,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:02:58,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:02:58,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:02:58,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:02:58,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:02:58,726 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:02:58,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:02:58,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:02:58,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:02:58,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:02:58,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:02:58,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:02:58,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:02:58,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:02:58,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:02:58,732 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:02:58,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:02:58,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:02:58,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:02:58,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:02:58,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:02:58,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:02:58,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:02:58,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:02:58,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:02:58,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:02:58,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:02:58,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:02:58,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:02:58,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:02:58,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:02:58,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:02:58,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:02:58,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 [2024-11-18 09:02:58,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:02:59,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:02:59,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:02:59,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:02:59,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:02:59,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep10-2.i [2024-11-18 09:03:00,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:03:00,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:03:00,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i [2024-11-18 09:03:00,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79e27ebf/4cd1d05b51d645a7a110922cf59de8d1/FLAG82b577360 [2024-11-18 09:03:01,129 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79e27ebf/4cd1d05b51d645a7a110922cf59de8d1 [2024-11-18 09:03:01,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:03:01,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:03:01,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:03:01,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:03:01,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:03:01,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1094e4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01, skipping insertion in model container [2024-11-18 09:03:01,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:03:01,366 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-18 09:03:01,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:03:01,378 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:03:01,397 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-18 09:03:01,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:03:01,417 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:03:01,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01 WrapperNode [2024-11-18 09:03:01,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:03:01,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:03:01,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:03:01,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:03:01,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,450 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-18 09:03:01,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:03:01,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:03:01,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:03:01,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:03:01,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,486 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-18 09:03:01,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:03:01,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:03:01,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:03:01,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:03:01,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (1/1) ... [2024-11-18 09:03:01,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:03:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:01,540 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) [2024-11-18 09:03:01,543 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 [2024-11-18 09:03:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:03:01,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:03:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:03:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:03:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:03:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-11-18 09:03:01,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-11-18 09:03:01,667 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:03:01,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:03:01,820 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 09:03:01,821 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:03:01,832 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:03:01,833 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:03:01,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:01 BoogieIcfgContainer [2024-11-18 09:03:01,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:03:01,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:03:01,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:03:01,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:03:01,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:03:01" (1/3) ... [2024-11-18 09:03:01,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49045cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:01, skipping insertion in model container [2024-11-18 09:03:01,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:01" (2/3) ... [2024-11-18 09:03:01,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49045cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:01, skipping insertion in model container [2024-11-18 09:03:01,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:01" (3/3) ... [2024-11-18 09:03:01,847 INFO L112 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2024-11-18 09:03:01,866 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:03:01,867 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:03:01,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:03:01,931 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;@6a2cb9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:03:01,932 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:03:01,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:03:01,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:01,942 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:01,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:01,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1179968903, now seen corresponding path program 1 times [2024-11-18 09:03:01,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:01,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022358511] [2024-11-18 09:03:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:01,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:03:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022358511] [2024-11-18 09:03:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022358511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:03:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:03:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10269856] [2024-11-18 09:03:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:02,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:02,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:03:02,300 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:02,331 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-11-18 09:03:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:03:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:02,340 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:03:02,340 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 09:03:02,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:03:02,346 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:02,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 09:03:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-18 09:03:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 09:03:02,389 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-18 09:03:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:02,390 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 09:03:02,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 09:03:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:03:02,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:02,393 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:02,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:03:02,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:02,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash 802434324, now seen corresponding path program 1 times [2024-11-18 09:03:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380827802] [2024-11-18 09:03:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:03:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380827802] [2024-11-18 09:03:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380827802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658491205] [2024-11-18 09:03:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:02,629 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) [2024-11-18 09:03:02,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:03:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:03:02,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:03:02,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:03:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658491205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:02,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:03:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:03:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183884932] [2024-11-18 09:03:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:02,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:02,789 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:02,811 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-18 09:03:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:02,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-18 09:03:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:02,814 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:03:02,815 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:03:02,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:02,817 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:02,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:03:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-18 09:03:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-18 09:03:02,828 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 31 [2024-11-18 09:03:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:02,828 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-18 09:03:02,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-18 09:03:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 09:03:02,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:02,831 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:02,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:03:03,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:03,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:03,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -621262767, now seen corresponding path program 1 times [2024-11-18 09:03:03,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:03,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488390302] [2024-11-18 09:03:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 09:03:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488390302] [2024-11-18 09:03:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488390302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008453084] [2024-11-18 09:03:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:03,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:03,184 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) [2024-11-18 09:03:03,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:03:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:03,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:03:03,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:03:03,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:03:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008453084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:03:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:03:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826929029] [2024-11-18 09:03:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:03,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:03,292 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:03,314 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-18 09:03:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:03,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-18 09:03:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:03,317 INFO L225 Difference]: With dead ends: 42 [2024-11-18 09:03:03,318 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:03:03,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:03,320 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:03,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:03:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-18 09:03:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-18 09:03:03,329 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 40 [2024-11-18 09:03:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:03,332 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-18 09:03:03,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-18 09:03:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 09:03:03,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:03,336 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:03,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:03:03,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 09:03:03,538 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:03,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -862308077, now seen corresponding path program 1 times [2024-11-18 09:03:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768370408] [2024-11-18 09:03:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:03,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768370408] [2024-11-18 09:03:03,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768370408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434792768] [2024-11-18 09:03:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:03,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:03,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:03:03,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:03:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:03,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:03:03,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:03,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434792768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:03,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:03:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817054429] [2024-11-18 09:03:03,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:03,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:03:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:03:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:03,895 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:03,932 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-18 09:03:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:03:03,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-18 09:03:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:03,933 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:03:03,933 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 09:03:03,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:03,935 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:03,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 09:03:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 09:03:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-18 09:03:03,947 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 42 [2024-11-18 09:03:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:03,947 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-18 09:03:03,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-18 09:03:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:03:03,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:03,951 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:03,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:03:04,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:04,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:04,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:04,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1955489561, now seen corresponding path program 2 times [2024-11-18 09:03:04,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:04,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709864062] [2024-11-18 09:03:04,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:04,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:04,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 09:03:04,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709864062] [2024-11-18 09:03:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709864062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882500006] [2024-11-18 09:03:04,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:04,296 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) [2024-11-18 09:03:04,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:03:04,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:04,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:04,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:03:04,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:04,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:04,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882500006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:04,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:04,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:03:04,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608792739] [2024-11-18 09:03:04,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:04,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:03:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:03:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:03:04,571 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:04,745 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2024-11-18 09:03:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:03:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-18 09:03:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:04,747 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:03:04,748 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:03:04,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:03:04,749 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:04,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:03:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-18 09:03:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-18 09:03:04,768 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 48 [2024-11-18 09:03:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:04,769 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-18 09:03:04,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-18 09:03:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 09:03:04,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:04,770 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:04,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:03:04,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:04,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:04,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1995207712, now seen corresponding path program 3 times [2024-11-18 09:03:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809778433] [2024-11-18 09:03:04,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:05,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:03:05,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-18 09:03:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809778433] [2024-11-18 09:03:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809778433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656816950] [2024-11-18 09:03:05,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:05,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:05,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:05,102 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) [2024-11-18 09:03:05,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:03:05,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:03:05,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:05,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:03:05,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-18 09:03:05,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-18 09:03:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656816950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:05,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:03:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249450233] [2024-11-18 09:03:05,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:05,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:03:05,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:03:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:05,259 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:05,290 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2024-11-18 09:03:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:03:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-18 09:03:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:05,291 INFO L225 Difference]: With dead ends: 71 [2024-11-18 09:03:05,291 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 09:03:05,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:05,292 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:05,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 09:03:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-18 09:03:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-18 09:03:05,303 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 69 [2024-11-18 09:03:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:05,304 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-18 09:03:05,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:05,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-18 09:03:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:03:05,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:05,305 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:05,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:03:05,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:05,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:05,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1036048934, now seen corresponding path program 4 times [2024-11-18 09:03:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358163340] [2024-11-18 09:03:05,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:05,551 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:05,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358163340] [2024-11-18 09:03:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358163340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424794399] [2024-11-18 09:03:05,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:05,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:05,666 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) [2024-11-18 09:03:05,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:03:05,776 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:05,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:05,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:03:05,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-18 09:03:05,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424794399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:05,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:05,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:03:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061501110] [2024-11-18 09:03:05,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:05,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:03:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:03:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:03:05,865 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:03:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:05,894 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2024-11-18 09:03:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:03:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 75 [2024-11-18 09:03:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:05,895 INFO L225 Difference]: With dead ends: 95 [2024-11-18 09:03:05,895 INFO L226 Difference]: Without dead ends: 66 [2024-11-18 09:03:05,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:03:05,896 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:05,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-18 09:03:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-18 09:03:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-18 09:03:05,903 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 75 [2024-11-18 09:03:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:05,903 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-18 09:03:05,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:03:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-18 09:03:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 09:03:05,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:05,907 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:03:06,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:06,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:06,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 915396634, now seen corresponding path program 5 times [2024-11-18 09:03:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:06,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687374289] [2024-11-18 09:03:06,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:06,334 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:03:06,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 09:03:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687374289] [2024-11-18 09:03:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687374289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089475581] [2024-11-18 09:03:06,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:06,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:06,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:06,567 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) [2024-11-18 09:03:06,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:03:06,951 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:03:06,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:06,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:03:06,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-18 09:03:07,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 09:03:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089475581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:07,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-18 09:03:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640548619] [2024-11-18 09:03:07,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:07,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:03:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:03:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:03:07,113 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:07,152 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2024-11-18 09:03:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:03:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2024-11-18 09:03:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:07,153 INFO L225 Difference]: With dead ends: 119 [2024-11-18 09:03:07,154 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 09:03:07,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:03:07,155 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:07,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 09:03:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-18 09:03:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.178082191780822) internal successors, (86), 73 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2024-11-18 09:03:07,167 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 111 [2024-11-18 09:03:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:07,168 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2024-11-18 09:03:07,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2024-11-18 09:03:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 09:03:07,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:07,170 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:07,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:03:07,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:07,370 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:07,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash 331573850, now seen corresponding path program 6 times [2024-11-18 09:03:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516238753] [2024-11-18 09:03:07,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:03:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:07,543 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:03:07,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-18 09:03:07,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:07,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516238753] [2024-11-18 09:03:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516238753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:07,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720815240] [2024-11-18 09:03:07,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:03:07,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:07,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:07,736 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) [2024-11-18 09:03:07,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:03:07,919 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:03:07,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:07,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:03:07,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 650 proven. 16 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2024-11-18 09:03:07,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-18 09:03:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720815240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:08,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-18 09:03:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135021471] [2024-11-18 09:03:08,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:08,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:03:08,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:03:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:03:08,033 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:08,081 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2024-11-18 09:03:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:03:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 147 [2024-11-18 09:03:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:08,086 INFO L225 Difference]: With dead ends: 129 [2024-11-18 09:03:08,086 INFO L226 Difference]: Without dead ends: 88 [2024-11-18 09:03:08,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:03:08,087 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:08,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 96 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-18 09:03:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-18 09:03:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-18 09:03:08,104 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 147 [2024-11-18 09:03:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:08,105 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-18 09:03:08,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-18 09:03:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 09:03:08,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:08,110 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:08,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:03:08,311 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,SelfDestructingSolverStorable8 [2024-11-18 09:03:08,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:08,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash 150054992, now seen corresponding path program 7 times [2024-11-18 09:03:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:08,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40730454] [2024-11-18 09:03:08,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:03:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 6 proven. 1305 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 09:03:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40730454] [2024-11-18 09:03:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40730454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059368472] [2024-11-18 09:03:12,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:03:12,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:12,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:12,239 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) [2024-11-18 09:03:12,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:03:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:12,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-18 09:03:12,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-18 09:03:12,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-18 09:03:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059368472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:13,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 34 [2024-11-18 09:03:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783218444] [2024-11-18 09:03:13,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:13,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 09:03:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 09:03:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 09:03:13,920 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 30 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 09:03:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:14,403 INFO L93 Difference]: Finished difference Result 270 states and 339 transitions. [2024-11-18 09:03:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 09:03:14,403 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 30 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 157 [2024-11-18 09:03:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:14,408 INFO L225 Difference]: With dead ends: 270 [2024-11-18 09:03:14,408 INFO L226 Difference]: Without dead ends: 266 [2024-11-18 09:03:14,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 09:03:14,410 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 29 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:14,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 993 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:03:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-18 09:03:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 230. [2024-11-18 09:03:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 223 states have internal predecessors, (282), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-18 09:03:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2024-11-18 09:03:14,444 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 157 [2024-11-18 09:03:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:14,445 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2024-11-18 09:03:14,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 30 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 09:03:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2024-11-18 09:03:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 09:03:14,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:14,449 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:14,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:03:14,649 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,SelfDestructingSolverStorable9 [2024-11-18 09:03:14,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:14,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 830113362, now seen corresponding path program 1 times [2024-11-18 09:03:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103700129] [2024-11-18 09:03:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 271 proven. 1070 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-18 09:03:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103700129] [2024-11-18 09:03:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103700129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815764669] [2024-11-18 09:03:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:20,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:20,382 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) [2024-11-18 09:03:20,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:03:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:20,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-18 09:03:20,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:20,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:20,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-18 09:03:20,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-18 09:03:21,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2024-11-18 09:03:21,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-18 09:03:21,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:03:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 7 proven. 1436 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-18 09:03:23,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 386 proven. 776 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-11-18 09:03:24,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815764669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:24,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:24,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 45, 22] total 85 [2024-11-18 09:03:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746561176] [2024-11-18 09:03:24,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:24,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-18 09:03:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-18 09:03:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=6822, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 09:03:24,921 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand has 85 states, 83 states have (on average 2.783132530120482) internal successors, (231), 82 states have internal predecessors, (231), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 09:03:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:33,746 INFO L93 Difference]: Finished difference Result 1325 states and 1851 transitions. [2024-11-18 09:03:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-18 09:03:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 83 states have (on average 2.783132530120482) internal successors, (231), 82 states have internal predecessors, (231), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 157 [2024-11-18 09:03:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:33,754 INFO L225 Difference]: With dead ends: 1325 [2024-11-18 09:03:33,754 INFO L226 Difference]: Without dead ends: 1226 [2024-11-18 09:03:33,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8016 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1529, Invalid=26193, Unknown=0, NotChecked=0, Total=27722 [2024-11-18 09:03:33,761 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 226 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 7701 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 7713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:33,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 3620 Invalid, 7713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 7701 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-18 09:03:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-18 09:03:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 708. [2024-11-18 09:03:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 690 states have (on average 1.3217391304347825) internal successors, (912), 695 states have internal predecessors, (912), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-18 09:03:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 946 transitions. [2024-11-18 09:03:33,849 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 946 transitions. Word has length 157 [2024-11-18 09:03:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:33,850 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 946 transitions. [2024-11-18 09:03:33,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 83 states have (on average 2.783132530120482) internal successors, (231), 82 states have internal predecessors, (231), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 09:03:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 946 transitions. [2024-11-18 09:03:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 09:03:33,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:33,855 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:33,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:03:34,055 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,SelfDestructingSolverStorable10 [2024-11-18 09:03:34,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:34,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 408220430, now seen corresponding path program 2 times [2024-11-18 09:03:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736340583] [2024-11-18 09:03:34,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:34,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:34,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 38 proven. 1472 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:03:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:40,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736340583] [2024-11-18 09:03:40,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736340583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:40,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250447041] [2024-11-18 09:03:40,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:40,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:40,030 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) [2024-11-18 09:03:40,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:03:40,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:40,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:40,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-18 09:03:40,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:40,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:40,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-18 09:03:40,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:40,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-18 09:03:41,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:41,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-18 09:03:42,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:42,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2024-11-18 09:03:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 675 proven. 767 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:42,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:45,862 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-18 09:03:45,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-11-18 09:03:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 691 proven. 650 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-18 09:03:46,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250447041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:46,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:46,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 56, 44] total 123 [2024-11-18 09:03:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537500194] [2024-11-18 09:03:46,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:46,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-18 09:03:46,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-18 09:03:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=14283, Unknown=0, NotChecked=0, Total=15006 [2024-11-18 09:03:46,744 INFO L87 Difference]: Start difference. First operand 708 states and 946 transitions. Second operand has 123 states, 123 states have (on average 2.2845528455284554) internal successors, (281), 121 states have internal predecessors, (281), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-18 09:03:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:54,279 INFO L93 Difference]: Finished difference Result 3137 states and 4397 transitions. [2024-11-18 09:03:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-18 09:03:54,281 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.2845528455284554) internal successors, (281), 121 states have internal predecessors, (281), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 157 [2024-11-18 09:03:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:54,297 INFO L225 Difference]: With dead ends: 3137 [2024-11-18 09:03:54,297 INFO L226 Difference]: Without dead ends: 2298 [2024-11-18 09:03:54,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7392 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1303, Invalid=23503, Unknown=0, NotChecked=0, Total=24806 [2024-11-18 09:03:54,310 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 170 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 9953 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 9988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 9953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:54,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 4872 Invalid, 9988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 9953 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-18 09:03:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2024-11-18 09:03:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1574. [2024-11-18 09:03:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1538 states have (on average 1.3283485045513654) internal successors, (2043), 1549 states have internal predecessors, (2043), 17 states have call successors, (17), 7 states have call predecessors, (17), 18 states have return successors, (65), 17 states have call predecessors, (65), 17 states have call successors, (65) [2024-11-18 09:03:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2125 transitions. [2024-11-18 09:03:54,501 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2125 transitions. Word has length 157 [2024-11-18 09:03:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:54,502 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2125 transitions. [2024-11-18 09:03:54,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.2845528455284554) internal successors, (281), 121 states have internal predecessors, (281), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-18 09:03:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2125 transitions. [2024-11-18 09:03:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 09:03:54,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:54,510 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:54,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:03:54,711 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,SelfDestructingSolverStorable11 [2024-11-18 09:03:54,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:54,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1129808686, now seen corresponding path program 3 times [2024-11-18 09:03:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:54,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893010263] [2024-11-18 09:03:54,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:54,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:55,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-18 09:03:55,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 760 proven. 237 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2024-11-18 09:03:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893010263] [2024-11-18 09:03:58,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893010263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83648090] [2024-11-18 09:03:58,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:58,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:58,161 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) [2024-11-18 09:03:58,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:03:58,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-18 09:03:58,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:58,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-18 09:03:58,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:59,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:03:59,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2024-11-18 09:03:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,219 INFO L349 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2024-11-18 09:03:59,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 62 [2024-11-18 09:03:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,422 INFO L349 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2024-11-18 09:03:59,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 62 [2024-11-18 09:03:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,605 INFO L349 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2024-11-18 09:03:59,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 62 [2024-11-18 09:03:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:03:59,777 INFO L349 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2024-11-18 09:03:59,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 62