./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pnr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/pnr5.c -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 c6dc18f387244e600c9c46c5a67fb3c0c9875a9a14eb13d3a621343f4a214b0b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:55:04,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:55:04,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:55:04,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:55:04,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:55:04,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:55:04,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:55:04,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:55:04,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:55:04,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:55:04,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:55:04,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:55:04,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:55:04,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:55:04,734 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:55:04,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:55:04,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:55:04,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:55:04,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:55:04,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:55:04,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:55:04,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:55:04,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:55:04,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:55:04,739 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:55:04,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:55:04,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:55:04,740 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:55:04,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:55:04,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:55:04,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:55:04,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:55:04,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:55:04,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:55:04,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:55:04,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:55:04,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:55:04,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:55:04,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:55:04,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:55:04,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:55:04,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:55:04,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6dc18f387244e600c9c46c5a67fb3c0c9875a9a14eb13d3a621343f4a214b0b [2024-11-08 09:55:05,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:55:05,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:55:05,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:55:05,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:55:05,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:55:05,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pnr5.c [2024-11-08 09:55:06,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:55:06,686 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:55:06,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pnr5.c [2024-11-08 09:55:06,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b69ae3cd/3d0301ad8ae94dda8285ef23229859e9/FLAG4370d324a [2024-11-08 09:55:07,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b69ae3cd/3d0301ad8ae94dda8285ef23229859e9 [2024-11-08 09:55:07,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:55:07,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:55:07,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:55:07,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:55:07,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:55:07,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541cdb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07, skipping insertion in model container [2024-11-08 09:55:07,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:55:07,307 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/array-tiling/pnr5.c[395,408] [2024-11-08 09:55:07,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:55:07,360 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:55:07,374 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/array-tiling/pnr5.c[395,408] [2024-11-08 09:55:07,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:55:07,414 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:55:07,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07 WrapperNode [2024-11-08 09:55:07,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:55:07,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:55:07,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:55:07,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:55:07,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,462 INFO L138 Inliner]: procedures = 17, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 99 [2024-11-08 09:55:07,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:55:07,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:55:07,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:55:07,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:55:07,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,494 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 11, 7]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7]. The 10 writes are split as follows [0, 10, 0]. [2024-11-08 09:55:07,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:55:07,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:55:07,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:55:07,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:55:07,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (1/1) ... [2024-11-08 09:55:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:55:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:07,547 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) [2024-11-08 09:55:07,550 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 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 09:55:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2024-11-08 09:55:07,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2024-11-08 09:55:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:55:07,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:55:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:55:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:55:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:55:07,666 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:55:07,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:55:07,956 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-08 09:55:07,956 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:55:07,975 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:55:07,975 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 09:55:07,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:55:07 BoogieIcfgContainer [2024-11-08 09:55:07,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:55:07,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:55:07,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:55:07,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:55:07,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:55:07" (1/3) ... [2024-11-08 09:55:07,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0a38e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:55:07, skipping insertion in model container [2024-11-08 09:55:07,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:07" (2/3) ... [2024-11-08 09:55:07,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0a38e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:55:07, skipping insertion in model container [2024-11-08 09:55:07,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:55:07" (3/3) ... [2024-11-08 09:55:07,989 INFO L112 eAbstractionObserver]: Analyzing ICFG pnr5.c [2024-11-08 09:55:08,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:55:08,007 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:55:08,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:55:08,081 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;@65884f68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:55:08,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:55:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 09:55:08,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:08,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:08,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:08,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1765780314, now seen corresponding path program 1 times [2024-11-08 09:55:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619290806] [2024-11-08 09:55:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:08,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619290806] [2024-11-08 09:55:08,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619290806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:08,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 09:55:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970179874] [2024-11-08 09:55:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:08,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:55:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:55:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:55:08,323 INFO L87 Difference]: Start difference. First operand has 38 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:08,339 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2024-11-08 09:55:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:55:08,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 09:55:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:08,346 INFO L225 Difference]: With dead ends: 71 [2024-11-08 09:55:08,346 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 09:55:08,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:55:08,351 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:08,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:55:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 09:55:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-08 09:55:08,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-08 09:55:08,390 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 11 [2024-11-08 09:55:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:08,390 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-08 09:55:08,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-08 09:55:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 09:55:08,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:08,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:08,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:55:08,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:08,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1807338759, now seen corresponding path program 1 times [2024-11-08 09:55:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491602806] [2024-11-08 09:55:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:08,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:08,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491602806] [2024-11-08 09:55:08,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491602806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:08,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:08,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 09:55:08,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292677702] [2024-11-08 09:55:08,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:08,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 09:55:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 09:55:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:08,772 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:08,916 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-11-08 09:55:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 09:55:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 09:55:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:08,919 INFO L225 Difference]: With dead ends: 57 [2024-11-08 09:55:08,919 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 09:55:08,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:08,922 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:08,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 35 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:55:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 09:55:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2024-11-08 09:55:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-08 09:55:08,940 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 11 [2024-11-08 09:55:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:08,941 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-08 09:55:08,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-08 09:55:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 09:55:08,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:08,944 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:08,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 09:55:08,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:08,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1666776415, now seen corresponding path program 1 times [2024-11-08 09:55:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:08,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181058509] [2024-11-08 09:55:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:09,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:09,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181058509] [2024-11-08 09:55:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181058509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209297854] [2024-11-08 09:55:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:09,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:09,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:09,921 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) [2024-11-08 09:55:09,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:55:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:10,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:55:10,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:10,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-08 09:55:10,161 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 24 treesize of output 12 [2024-11-08 09:55:10,192 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 24 treesize of output 12 [2024-11-08 09:55:10,232 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 24 treesize of output 12 [2024-11-08 09:55:10,264 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 24 treesize of output 12 [2024-11-08 09:55:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:10,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:10,418 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 15 treesize of output 13 [2024-11-08 09:55:10,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 12 [2024-11-08 09:55:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:10,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209297854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:10,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:10,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 15 [2024-11-08 09:55:10,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180346896] [2024-11-08 09:55:10,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:10,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 09:55:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 09:55:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-08 09:55:10,449 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 09:55:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:10,928 INFO L93 Difference]: Finished difference Result 119 states and 170 transitions. [2024-11-08 09:55:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 09:55:10,929 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 43 [2024-11-08 09:55:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:10,931 INFO L225 Difference]: With dead ends: 119 [2024-11-08 09:55:10,931 INFO L226 Difference]: Without dead ends: 117 [2024-11-08 09:55:10,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:55:10,933 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 132 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:10,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 295 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:55:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-08 09:55:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 54. [2024-11-08 09:55:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 09:55:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-11-08 09:55:10,948 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 43 [2024-11-08 09:55:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:10,949 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-08 09:55:10,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 09:55:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2024-11-08 09:55:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 09:55:10,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:10,950 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:10,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 09:55:11,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:11,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:11,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1926591007, now seen corresponding path program 1 times [2024-11-08 09:55:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854613888] [2024-11-08 09:55:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:11,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854613888] [2024-11-08 09:55:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854613888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289807909] [2024-11-08 09:55:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:11,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:11,647 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) [2024-11-08 09:55:11,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:55:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:11,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 09:55:11,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:11,851 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 [2024-11-08 09:55:11,959 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 23 treesize of output 11 [2024-11-08 09:55:12,048 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 23 treesize of output 11 [2024-11-08 09:55:12,130 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 23 treesize of output 11 [2024-11-08 09:55:12,207 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 23 treesize of output 11 [2024-11-08 09:55:12,287 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 15 treesize of output 7 [2024-11-08 09:55:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 09:55:12,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:12,416 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 15 treesize of output 13 [2024-11-08 09:55:12,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 16 [2024-11-08 09:55:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289807909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:12,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:12,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 21 [2024-11-08 09:55:12,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851733943] [2024-11-08 09:55:12,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:12,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 09:55:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 09:55:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:55:12,511 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:13,370 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2024-11-08 09:55:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 09:55:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 43 [2024-11-08 09:55:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:13,373 INFO L225 Difference]: With dead ends: 146 [2024-11-08 09:55:13,373 INFO L226 Difference]: Without dead ends: 144 [2024-11-08 09:55:13,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=966, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 09:55:13,378 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 278 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:13,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 365 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 09:55:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-08 09:55:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 36. [2024-11-08 09:55:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2024-11-08 09:55:13,398 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 43 [2024-11-08 09:55:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:13,398 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2024-11-08 09:55:13,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2024-11-08 09:55:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 09:55:13,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:13,401 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:13,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 09:55:13,605 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,SelfDestructingSolverStorable3 [2024-11-08 09:55:13,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:13,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -221843627, now seen corresponding path program 1 times [2024-11-08 09:55:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246364411] [2024-11-08 09:55:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:13,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:13,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:13,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:13,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:14,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:14,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246364411] [2024-11-08 09:55:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246364411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856285609] [2024-11-08 09:55:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:14,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:14,011 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) [2024-11-08 09:55:14,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:55:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:14,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:55:14,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:14,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-08 09:55:14,143 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 24 treesize of output 12 [2024-11-08 09:55:14,166 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 24 treesize of output 12 [2024-11-08 09:55:14,187 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 24 treesize of output 12 [2024-11-08 09:55:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:14,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:14,316 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 15 [2024-11-08 09:55:14,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 09:55:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856285609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:14,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:14,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 14 [2024-11-08 09:55:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455971882] [2024-11-08 09:55:14,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:14,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:55:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:55:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:55:14,342 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 09:55:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:14,746 INFO L93 Difference]: Finished difference Result 144 states and 211 transitions. [2024-11-08 09:55:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 09:55:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 47 [2024-11-08 09:55:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:14,748 INFO L225 Difference]: With dead ends: 144 [2024-11-08 09:55:14,748 INFO L226 Difference]: Without dead ends: 142 [2024-11-08 09:55:14,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-08 09:55:14,749 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 118 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:14,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 257 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:55:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-08 09:55:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 58. [2024-11-08 09:55:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 09:55:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2024-11-08 09:55:14,781 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 47 [2024-11-08 09:55:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:14,782 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2024-11-08 09:55:14,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 09:55:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2024-11-08 09:55:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 09:55:14,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:14,783 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:14,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 09:55:14,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:14,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:14,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1164359767, now seen corresponding path program 1 times [2024-11-08 09:55:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425443685] [2024-11-08 09:55:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425443685] [2024-11-08 09:55:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425443685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483882073] [2024-11-08 09:55:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:15,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:15,417 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) [2024-11-08 09:55:15,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:55:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:15,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 09:55:15,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:15,629 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 [2024-11-08 09:55:15,704 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 23 treesize of output 11 [2024-11-08 09:55:15,779 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 23 treesize of output 11 [2024-11-08 09:55:15,838 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 23 treesize of output 11 [2024-11-08 09:55:15,924 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 15 treesize of output 7 [2024-11-08 09:55:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:55:15,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:16,037 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 15 [2024-11-08 09:55:16,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 16 [2024-11-08 09:55:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483882073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:16,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:16,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 22 [2024-11-08 09:55:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691555672] [2024-11-08 09:55:16,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:16,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 09:55:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 09:55:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-08 09:55:16,133 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:16,909 INFO L93 Difference]: Finished difference Result 177 states and 255 transitions. [2024-11-08 09:55:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 09:55:16,910 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 47 [2024-11-08 09:55:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:16,911 INFO L225 Difference]: With dead ends: 177 [2024-11-08 09:55:16,911 INFO L226 Difference]: Without dead ends: 175 [2024-11-08 09:55:16,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=926, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 09:55:16,913 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 323 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:16,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 344 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 09:55:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-08 09:55:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 40. [2024-11-08 09:55:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-08 09:55:16,928 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 47 [2024-11-08 09:55:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:16,929 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-08 09:55:16,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-08 09:55:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 09:55:16,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:16,930 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:16,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:55:17,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:17,135 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:17,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1432286795, now seen corresponding path program 2 times [2024-11-08 09:55:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:17,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307160250] [2024-11-08 09:55:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307160250] [2024-11-08 09:55:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307160250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86249557] [2024-11-08 09:55:17,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:55:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:17,538 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) [2024-11-08 09:55:17,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:55:17,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:55:17,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:55:17,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 09:55:17,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:17,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-08 09:55:17,796 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 24 treesize of output 12 [2024-11-08 09:55:17,820 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 24 treesize of output 12 [2024-11-08 09:55:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:17,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:18,016 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 15 [2024-11-08 09:55:18,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 09:55:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86249557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:18,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 21 [2024-11-08 09:55:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435273984] [2024-11-08 09:55:18,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:18,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 09:55:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 09:55:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:55:18,057 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:18,981 INFO L93 Difference]: Finished difference Result 219 states and 327 transitions. [2024-11-08 09:55:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 09:55:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 51 [2024-11-08 09:55:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:18,983 INFO L225 Difference]: With dead ends: 219 [2024-11-08 09:55:18,983 INFO L226 Difference]: Without dead ends: 217 [2024-11-08 09:55:18,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 09:55:18,985 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 448 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:18,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 376 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 09:55:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-08 09:55:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 88. [2024-11-08 09:55:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 68 states have internal predecessors, (90), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 09:55:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2024-11-08 09:55:19,009 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 51 [2024-11-08 09:55:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:19,010 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2024-11-08 09:55:19,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2024-11-08 09:55:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 09:55:19,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:19,012 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:19,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:55:19,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:19,216 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:19,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash -939452467, now seen corresponding path program 1 times [2024-11-08 09:55:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:19,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736405081] [2024-11-08 09:55:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736405081] [2024-11-08 09:55:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736405081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304182728] [2024-11-08 09:55:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:19,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:19,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:19,558 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) [2024-11-08 09:55:19,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:55:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:19,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 09:55:19,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:19,763 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 [2024-11-08 09:55:19,835 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 23 treesize of output 11 [2024-11-08 09:55:19,891 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 23 treesize of output 11 [2024-11-08 09:55:20,022 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 15 treesize of output 7 [2024-11-08 09:55:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:55:20,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:20,188 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 15 [2024-11-08 09:55:20,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 16 [2024-11-08 09:55:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:20,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304182728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:20,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:20,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2024-11-08 09:55:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117633309] [2024-11-08 09:55:20,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:20,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 09:55:20,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 09:55:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-11-08 09:55:20,274 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:21,632 INFO L93 Difference]: Finished difference Result 314 states and 469 transitions. [2024-11-08 09:55:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 09:55:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 51 [2024-11-08 09:55:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:21,637 INFO L225 Difference]: With dead ends: 314 [2024-11-08 09:55:21,637 INFO L226 Difference]: Without dead ends: 312 [2024-11-08 09:55:21,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=577, Invalid=2075, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 09:55:21,639 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 500 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:21,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 473 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 09:55:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-08 09:55:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 44. [2024-11-08 09:55:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 09:55:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-08 09:55:21,675 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 51 [2024-11-08 09:55:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:21,676 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-08 09:55:21,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-08 09:55:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 09:55:21,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:21,680 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:21,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 09:55:21,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:21,881 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:21,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 235835969, now seen corresponding path program 3 times [2024-11-08 09:55:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457514697] [2024-11-08 09:55:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 09:55:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:55:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 09:55:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:55:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 09:55:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457514697] [2024-11-08 09:55:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457514697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477853882] [2024-11-08 09:55:22,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:55:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:22,215 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) [2024-11-08 09:55:22,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:55:22,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 09:55:22,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:55:22,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 09:55:22,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:22,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-08 09:55:22,463 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 24 treesize of output 12 [2024-11-08 09:55:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 09:55:22,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:22,765 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 18 treesize of output 16 [2024-11-08 09:55:22,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 18 [2024-11-08 09:55:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:55:22,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477853882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:22,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:22,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 25 [2024-11-08 09:55:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060041592] [2024-11-08 09:55:22,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:22,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 09:55:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 09:55:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-11-08 09:55:22,810 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 09:55:26,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:30,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:34,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:38,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:42,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:46,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:50,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:54,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:55:59,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:03,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:07,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:11,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:15,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:19,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:23,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:27,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:31,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:35,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:39,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 09:56:43,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]