./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr5.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/mbpr5.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 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:53:47,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:53:47,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:53:47,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:53:47,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:53:47,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:53:47,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:53:47,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:53:47,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:53:47,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:53:47,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:53:47,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:53:47,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:53:47,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:53:47,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:53:47,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:53:47,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:53:47,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:53:47,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:53:47,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:53:47,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:53:47,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:53:47,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:53:47,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:53:47,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:53:47,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:53:47,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:53:47,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:53:47,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:53:47,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:53:47,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:53:47,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:53:47,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:53:47,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:53:47,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:53:47,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:53:47,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:53:47,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:53:47,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:53:47,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:53:47,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:53:47,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:53:47,861 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b [2024-11-08 09:53:48,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:53:48,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:53:48,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:53:48,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:53:48,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:53:48,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr5.c [2024-11-08 09:53:49,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:53:49,509 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:53:49,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr5.c [2024-11-08 09:53:49,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ac49280/ee766697774e47de8fd5cbe59db86cf2/FLAG59136f377 [2024-11-08 09:53:49,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ac49280/ee766697774e47de8fd5cbe59db86cf2 [2024-11-08 09:53:49,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:53:49,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:53:49,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:53:49,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:53:49,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:53:49,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742a71a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49, skipping insertion in model container [2024-11-08 09:53:49,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:53:49,710 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/mbpr5.c[396,409] [2024-11-08 09:53:49,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:53:49,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:53:49,816 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/mbpr5.c[396,409] [2024-11-08 09:53:49,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:53:49,857 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:53:49,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49 WrapperNode [2024-11-08 09:53:49,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:53:49,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:53:49,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:53:49,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:53:49,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,898 INFO L138 Inliner]: procedures = 15, calls = 72, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 182 [2024-11-08 09:53:49,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:53:49,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:53:49,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:53:49,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:53:49,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,925 INFO L175 MemorySlicer]: Split 62 memory accesses to 3 slices as follows [2, 8, 52]. 84 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 30 writes are split as follows [0, 0, 30]. [2024-11-08 09:53:49,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:53:49,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:53:49,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:53:49,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:53:49,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (1/1) ... [2024-11-08 09:53:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:53:49,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:49,980 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 09:53:49,984 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 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:53:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:53:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:53:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:53:50,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:53:50,114 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:53:50,342 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-08 09:53:50,342 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:53:50,356 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:53:50,358 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 09:53:50,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:53:50 BoogieIcfgContainer [2024-11-08 09:53:50,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:53:50,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:53:50,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:53:50,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:53:50,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:53:49" (1/3) ... [2024-11-08 09:53:50,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b925c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:53:50, skipping insertion in model container [2024-11-08 09:53:50,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:49" (2/3) ... [2024-11-08 09:53:50,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b925c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:53:50, skipping insertion in model container [2024-11-08 09:53:50,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:53:50" (3/3) ... [2024-11-08 09:53:50,368 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2024-11-08 09:53:50,382 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:53:50,382 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:53:50,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:53:50,430 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64708f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:53:50,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:53:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 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 09:53:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 09:53:50,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:50,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:50,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:50,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1087925893, now seen corresponding path program 1 times [2024-11-08 09:53:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300382064] [2024-11-08 09:53:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:50,614 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 09:53:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300382064] [2024-11-08 09:53:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300382064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:53:50,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 09:53:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532575644] [2024-11-08 09:53:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:50,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:53:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:53:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:53:50,641 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 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) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 09:53:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:50,655 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2024-11-08 09:53:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:53:50,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2024-11-08 09:53:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:50,662 INFO L225 Difference]: With dead ends: 83 [2024-11-08 09:53:50,663 INFO L226 Difference]: Without dead ends: 39 [2024-11-08 09:53:50,666 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 09:53:50,670 INFO L432 NwaCegarLoop]: 57 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, 57 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 09:53:50,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-08 09:53:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-08 09:53:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 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 09:53:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-08 09:53:50,700 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 21 [2024-11-08 09:53:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:50,700 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-08 09:53:50,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 09:53:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-08 09:53:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 09:53:50,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:50,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:50,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:53:50,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:50,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -30028973, now seen corresponding path program 1 times [2024-11-08 09:53:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120168064] [2024-11-08 09:53:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:50,940 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 09:53:50,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:50,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120168064] [2024-11-08 09:53:50,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120168064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:50,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:53:50,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:53:50,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548794569] [2024-11-08 09:53:50,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:50,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:53:50,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:50,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:53:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:53:50,945 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 09:53:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:50,984 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2024-11-08 09:53:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:53:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2024-11-08 09:53:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:50,986 INFO L225 Difference]: With dead ends: 43 [2024-11-08 09:53:50,986 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 09:53:50,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:53:50,988 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:50,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 09:53:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-08 09:53:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:53:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-08 09:53:50,998 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2024-11-08 09:53:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:50,999 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-08 09:53:50,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 09:53:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-08 09:53:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 09:53:51,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:51,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:51,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 09:53:51,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:51,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -29969391, now seen corresponding path program 1 times [2024-11-08 09:53:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814417201] [2024-11-08 09:53:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:51,197 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 09:53:51,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:51,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814417201] [2024-11-08 09:53:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814417201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:53:51,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 09:53:51,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065178578] [2024-11-08 09:53:51,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:51,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 09:53:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 09:53:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:51,202 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 09:53:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:51,332 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2024-11-08 09:53:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 09:53:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2024-11-08 09:53:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:51,334 INFO L225 Difference]: With dead ends: 92 [2024-11-08 09:53:51,334 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 09:53:51,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:51,335 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:51,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 25 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 09:53:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2024-11-08 09:53:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 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 09:53:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-08 09:53:51,346 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2024-11-08 09:53:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:51,346 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-08 09:53:51,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 09:53:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-08 09:53:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 09:53:51,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:51,347 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:51,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:53:51,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:51,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash -175217928, now seen corresponding path program 1 times [2024-11-08 09:53:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346967834] [2024-11-08 09:53:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:53:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346967834] [2024-11-08 09:53:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346967834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:53:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:53:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834759718] [2024-11-08 09:53:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:51,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:53:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:53:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:53:51,492 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:53:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:51,519 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-08 09:53:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:53:51,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 09:53:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:51,521 INFO L225 Difference]: With dead ends: 61 [2024-11-08 09:53:51,521 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 09:53:51,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:53:51,522 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:51,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 09:53:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 09:53:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:53:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-08 09:53:51,535 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 41 [2024-11-08 09:53:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:51,535 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-08 09:53:51,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:53:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-08 09:53:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 09:53:51,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:51,537 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:51,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 09:53:51,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:51,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash -568244938, now seen corresponding path program 1 times [2024-11-08 09:53:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311213394] [2024-11-08 09:53:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:51,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:53:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311213394] [2024-11-08 09:53:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311213394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587976680] [2024-11-08 09:53:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:53,250 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 09:53:53,252 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 09:53:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:53,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 09:53:53,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:53,459 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 11 treesize of output 7 [2024-11-08 09:53:53,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:53,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2024-11-08 09:53:53,562 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 09:53:53,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 18 [2024-11-08 09:53:53,657 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 09:53:53,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:53,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2024-11-08 09:53:53,713 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 09:53:53,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-08 09:53:53,769 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 19 treesize of output 18 [2024-11-08 09:53:53,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:53,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2024-11-08 09:53:53,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:53,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 09:53:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:53:53,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:54,175 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 09:53:54,178 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 20 [2024-11-08 09:53:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:53:54,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587976680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:54,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:54,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 22 [2024-11-08 09:53:54,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078147250] [2024-11-08 09:53:54,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:54,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 09:53:54,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 09:53:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-08 09:53:54,212 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 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 09:53:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:54,555 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2024-11-08 09:53:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 09:53:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 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 41 [2024-11-08 09:53:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:54,557 INFO L225 Difference]: With dead ends: 118 [2024-11-08 09:53:54,558 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 09:53:54,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2024-11-08 09:53:54,561 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 294 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:54,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 99 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:53:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 09:53:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 48. [2024-11-08 09:53:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 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 09:53:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-08 09:53:54,573 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 41 [2024-11-08 09:53:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:54,574 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-08 09:53:54,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 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 09:53:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-08 09:53:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 09:53:54,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:54,579 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:54,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 09:53:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:54,780 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1692770569, now seen corresponding path program 1 times [2024-11-08 09:53:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511698759] [2024-11-08 09:53:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:54,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 09:53:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511698759] [2024-11-08 09:53:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511698759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217639530] [2024-11-08 09:53:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:55,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:55,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:55,849 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 09:53:55,850 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 09:53:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:55,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 09:53:55,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:56,081 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 09:53:56,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:56,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2024-11-08 09:53:56,153 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 09:53:56,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:56,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 25 [2024-11-08 09:53:56,217 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 09:53:56,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:56,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 18 [2024-11-08 09:53:56,276 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 19 treesize of output 18 [2024-11-08 09:53:56,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:56,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2024-11-08 09:53:56,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:56,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 09:53:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:53:56,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:56,630 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 19 treesize of output 17 [2024-11-08 09:53:56,633 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 24 treesize of output 20 [2024-11-08 09:53:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:53:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217639530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:56,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22 [2024-11-08 09:53:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971930105] [2024-11-08 09:53:56,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:56,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 09:53:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 09:53:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-08 09:53:56,680 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 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 09:53:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:57,095 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2024-11-08 09:53:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:53:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 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 47 [2024-11-08 09:53:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:57,096 INFO L225 Difference]: With dead ends: 114 [2024-11-08 09:53:57,096 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 09:53:57,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 09:53:57,097 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 230 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:57,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 130 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:53:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 09:53:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 54. [2024-11-08 09:53:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 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 09:53:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-08 09:53:57,103 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 47 [2024-11-08 09:53:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:57,103 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-08 09:53:57,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 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 09:53:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-08 09:53:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 09:53:57,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:57,104 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:57,117 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 09:53:57,308 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,SelfDestructingSolverStorable5 [2024-11-08 09:53:57,309 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:57,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash 964465308, now seen corresponding path program 2 times [2024-11-08 09:53:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721193933] [2024-11-08 09:53:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:53:58,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721193933] [2024-11-08 09:53:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721193933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934569000] [2024-11-08 09:53:58,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:53:58,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:58,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:58,185 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 09:53:58,187 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 09:53:58,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:53:58,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:58,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 09:53:58,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:58,368 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 09:53:58,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:58,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2024-11-08 09:53:58,434 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 09:53:58,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:58,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 18 [2024-11-08 09:53:58,476 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 19 treesize of output 18 [2024-11-08 09:53:58,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:58,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2024-11-08 09:53:58,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:53:58,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 09:53:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:53:58,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:58,855 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 19 treesize of output 17 [2024-11-08 09:53:58,857 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 24 treesize of output 20 [2024-11-08 09:53:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:53:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934569000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:58,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 24 [2024-11-08 09:53:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241173253] [2024-11-08 09:53:58,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:58,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 09:53:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 09:53:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-11-08 09:53:58,906 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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 09:53:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:59,449 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2024-11-08 09:53:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 09:53:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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 53 [2024-11-08 09:53:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:59,452 INFO L225 Difference]: With dead ends: 136 [2024-11-08 09:53:59,452 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 09:53:59,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 09:53:59,453 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 154 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:59,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 172 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:53:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 09:53:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 60. [2024-11-08 09:53:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 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 09:53:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2024-11-08 09:53:59,463 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 53 [2024-11-08 09:53:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:59,464 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2024-11-08 09:53:59,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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 09:53:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2024-11-08 09:53:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 09:53:59,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:59,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:59,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:59,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:59,667 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:59,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -477181457, now seen corresponding path program 3 times [2024-11-08 09:53:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817676215] [2024-11-08 09:53:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:54:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817676215] [2024-11-08 09:54:00,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817676215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536119011] [2024-11-08 09:54:00,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:54:00,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:00,384 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 09:54:00,385 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 09:54:00,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 09:54:00,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:00,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 09:54:00,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:00,665 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 09:54:00,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:00,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2024-11-08 09:54:00,726 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 19 treesize of output 18 [2024-11-08 09:54:00,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:00,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2024-11-08 09:54:00,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:00,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 09:54:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:54:00,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:01,129 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 19 treesize of output 17 [2024-11-08 09:54:01,131 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 24 treesize of output 20 [2024-11-08 09:54:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536119011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:01,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 27 [2024-11-08 09:54:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411075671] [2024-11-08 09:54:01,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:01,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 09:54:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 09:54:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2024-11-08 09:54:01,196 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 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 09:54:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:01,854 INFO L93 Difference]: Finished difference Result 140 states and 160 transitions. [2024-11-08 09:54:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 09:54:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 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 59 [2024-11-08 09:54:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:01,855 INFO L225 Difference]: With dead ends: 140 [2024-11-08 09:54:01,855 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 09:54:01,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 09:54:01,857 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 270 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:01,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 203 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:54:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 09:54:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 66. [2024-11-08 09:54:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 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 09:54:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-08 09:54:01,865 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 59 [2024-11-08 09:54:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:01,866 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-08 09:54:01,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 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 09:54:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-08 09:54:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 09:54:01,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:01,867 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-08 09:54:01,882 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 09:54:02,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:02,067 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:02,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -712968446, now seen corresponding path program 4 times [2024-11-08 09:54:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624413239] [2024-11-08 09:54:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:54:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624413239] [2024-11-08 09:54:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624413239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904033872] [2024-11-08 09:54:02,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:54:02,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:02,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:02,675 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 09:54:02,676 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 09:54:02,759 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:54:02,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:02,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 09:54:02,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:02,807 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 11 treesize of output 7 [2024-11-08 09:54:02,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-08 09:54:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:03,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:03,062 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 09:54:03,065 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 09:54:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904033872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:03,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 22 [2024-11-08 09:54:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039086922] [2024-11-08 09:54:03,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:03,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 09:54:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 09:54:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-08 09:54:03,070 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 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 09:54:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:03,436 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2024-11-08 09:54:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 09:54:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 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 65 [2024-11-08 09:54:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:03,437 INFO L225 Difference]: With dead ends: 107 [2024-11-08 09:54:03,437 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 09:54:03,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 09:54:03,438 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:03,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:54:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 09:54:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2024-11-08 09:54:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 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 09:54:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2024-11-08 09:54:03,444 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 65 [2024-11-08 09:54:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:03,444 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2024-11-08 09:54:03,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 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 09:54:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2024-11-08 09:54:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 09:54:03,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:03,445 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:03,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 09:54:03,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:03,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:03,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1869859285, now seen corresponding path program 5 times [2024-11-08 09:54:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323169585] [2024-11-08 09:54:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323169585] [2024-11-08 09:54:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323169585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014708567] [2024-11-08 09:54:03,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:54:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:03,940 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 09:54:03,940 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 09:54:04,583 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 09:54:04,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:04,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 09:54:04,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:05,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:54:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014708567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:05,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 34 [2024-11-08 09:54:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924650234] [2024-11-08 09:54:05,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:05,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 09:54:05,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 09:54:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 09:54:05,256 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:54:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:05,577 INFO L93 Difference]: Finished difference Result 222 states and 245 transitions. [2024-11-08 09:54:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 09:54:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-08 09:54:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:05,579 INFO L225 Difference]: With dead ends: 222 [2024-11-08 09:54:05,579 INFO L226 Difference]: Without dead ends: 107 [2024-11-08 09:54:05,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 09:54:05,580 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 332 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:05,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 199 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:54:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-08 09:54:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 92. [2024-11-08 09:54:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 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 09:54:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2024-11-08 09:54:05,587 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 71 [2024-11-08 09:54:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:05,587 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2024-11-08 09:54:05,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:54:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2024-11-08 09:54:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 09:54:05,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:05,588 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:05,602 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 09:54:05,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:05,789 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:05,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:05,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2130271302, now seen corresponding path program 6 times [2024-11-08 09:54:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299114409] [2024-11-08 09:54:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:54:08,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299114409] [2024-11-08 09:54:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299114409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659792669] [2024-11-08 09:54:08,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:54:08,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:08,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:08,111 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 09:54:08,112 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 09:54:08,946 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 09:54:08,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:08,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 09:54:08,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:09,006 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 13 treesize of output 9 [2024-11-08 09:54:09,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 58 treesize of output 13 [2024-11-08 09:54:09,053 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-08 09:54:09,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-11-08 09:54:09,084 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 09:54:09,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 28 [2024-11-08 09:54:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 09:54:09,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:09,756 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 25 treesize of output 23 [2024-11-08 09:54:09,759 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 46 treesize of output 42 [2024-11-08 09:54:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 09:54:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659792669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:09,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:09,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 37 [2024-11-08 09:54:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394909263] [2024-11-08 09:54:09,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:09,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 09:54:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 09:54:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 09:54:09,833 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 37 states have internal predecessors, (215), 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 09:54:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:11,766 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2024-11-08 09:54:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 09:54:11,766 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 37 states have internal predecessors, (215), 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 91 [2024-11-08 09:54:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:11,767 INFO L225 Difference]: With dead ends: 169 [2024-11-08 09:54:11,767 INFO L226 Difference]: Without dead ends: 159 [2024-11-08 09:54:11,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 182 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=664, Invalid=3626, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 09:54:11,770 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 404 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:11,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 393 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2294 Invalid, 2 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 09:54:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-08 09:54:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2024-11-08 09:54:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:54:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-11-08 09:54:11,789 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 91 [2024-11-08 09:54:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:11,789 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-11-08 09:54:11,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 37 states have internal predecessors, (215), 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 09:54:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-11-08 09:54:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 09:54:11,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:11,791 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:11,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 09:54:11,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:11,993 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:11,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash 463915083, now seen corresponding path program 7 times [2024-11-08 09:54:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:11,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525222246] [2024-11-08 09:54:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:11,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:54:13,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:13,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525222246] [2024-11-08 09:54:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525222246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:13,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685341300] [2024-11-08 09:54:13,841 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:54:13,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:13,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:13,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:54:13,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:54:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:13,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-08 09:54:13,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:14,063 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 09:54:14,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2024-11-08 09:54:14,141 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 19 treesize of output 18 [2024-11-08 09:54:14,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 35 [2024-11-08 09:54:14,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2024-11-08 09:54:14,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 42 [2024-11-08 09:54:14,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 35 [2024-11-08 09:54:14,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 38 [2024-11-08 09:54:14,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2024-11-08 09:54:14,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 35 [2024-11-08 09:54:14,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 35 [2024-11-08 09:54:14,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 31 [2024-11-08 09:54:14,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 09:54:14,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:14,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2024-11-08 09:54:15,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:15,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:54:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 131 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 09:54:15,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:23,816 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 19 treesize of output 17 [2024-11-08 09:54:23,818 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 24 treesize of output 20 [2024-11-08 09:54:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:54:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685341300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:23,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 31, 15] total 56 [2024-11-08 09:54:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303012916] [2024-11-08 09:54:23,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:23,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 09:54:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 09:54:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2816, Unknown=1, NotChecked=0, Total=3080 [2024-11-08 09:54:23,912 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 56 states, 56 states have (on average 4.714285714285714) internal successors, (264), 56 states have internal predecessors, (264), 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 09:54:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:29,799 INFO L93 Difference]: Finished difference Result 560 states and 626 transitions. [2024-11-08 09:54:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-08 09:54:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.714285714285714) internal successors, (264), 56 states have internal predecessors, (264), 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 97 [2024-11-08 09:54:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:29,801 INFO L225 Difference]: With dead ends: 560 [2024-11-08 09:54:29,801 INFO L226 Difference]: Without dead ends: 550 [2024-11-08 09:54:29,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11570 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3398, Invalid=31757, Unknown=1, NotChecked=0, Total=35156 [2024-11-08 09:54:29,807 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2252 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 4684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:29,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 674 Invalid, 4684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 09:54:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-08 09:54:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 104. [2024-11-08 09:54:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 states have internal predecessors, (110), 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 09:54:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2024-11-08 09:54:29,819 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 97 [2024-11-08 09:54:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:29,819 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2024-11-08 09:54:29,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.714285714285714) internal successors, (264), 56 states have internal predecessors, (264), 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 09:54:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2024-11-08 09:54:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 09:54:29,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:29,820 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:29,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 09:54:30,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 09:54:30,020 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:30,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -773865378, now seen corresponding path program 8 times [2024-11-08 09:54:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799927131] [2024-11-08 09:54:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 163 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:54:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799927131] [2024-11-08 09:54:32,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799927131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697662733] [2024-11-08 09:54:32,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:54:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:32,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:54:32,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:54:32,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:54:32,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:32,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 09:54:32,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:32,531 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 09:54:32,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2024-11-08 09:54:32,606 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 19 treesize of output 18 [2024-11-08 09:54:32,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 28 [2024-11-08 09:54:32,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2024-11-08 09:54:32,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 35 [2024-11-08 09:54:32,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 35 [2024-11-08 09:54:32,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 31 [2024-11-08 09:54:32,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 09:54:32,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:32,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2024-11-08 09:54:33,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:33,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:54:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 168 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:54:33,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:38,045 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 19 treesize of output 17 [2024-11-08 09:54:38,046 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 24 treesize of output 20 [2024-11-08 09:54:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 09:54:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697662733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:38,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:38,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 16] total 56 [2024-11-08 09:54:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151142556] [2024-11-08 09:54:38,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:38,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 09:54:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 09:54:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2804, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 09:54:38,142 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 56 states, 56 states have (on average 5.071428571428571) internal successors, (284), 56 states have internal predecessors, (284), 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 09:54:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:42,061 INFO L93 Difference]: Finished difference Result 351 states and 394 transitions. [2024-11-08 09:54:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-08 09:54:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.071428571428571) internal successors, (284), 56 states have internal predecessors, (284), 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 103 [2024-11-08 09:54:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:42,063 INFO L225 Difference]: With dead ends: 351 [2024-11-08 09:54:42,063 INFO L226 Difference]: Without dead ends: 341 [2024-11-08 09:54:42,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 181 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4888 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1768, Invalid=14488, Unknown=0, NotChecked=0, Total=16256 [2024-11-08 09:54:42,066 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1307 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:42,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 612 Invalid, 4648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 09:54:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-08 09:54:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 110. [2024-11-08 09:54:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0642201834862386) internal successors, (116), 109 states have internal predecessors, (116), 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 09:54:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2024-11-08 09:54:42,078 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 103 [2024-11-08 09:54:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:42,079 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2024-11-08 09:54:42,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.071428571428571) internal successors, (284), 56 states have internal predecessors, (284), 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 09:54:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2024-11-08 09:54:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-08 09:54:42,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:42,079 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:42,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 09:54:42,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 09:54:42,280 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:42,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash -191553999, now seen corresponding path program 9 times [2024-11-08 09:54:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287105660] [2024-11-08 09:54:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 208 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 09:54:44,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287105660] [2024-11-08 09:54:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287105660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421115188] [2024-11-08 09:54:44,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:54:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:44,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:54:44,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:54:46,328 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 09:54:46,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:46,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 09:54:46,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:46,490 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 11 treesize of output 7 [2024-11-08 09:54:46,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2024-11-08 09:54:46,573 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 18 [2024-11-08 09:54:46,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 28 [2024-11-08 09:54:46,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2024-11-08 09:54:46,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 31 [2024-11-08 09:54:46,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2024-11-08 09:54:46,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:46,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 41 [2024-11-08 09:54:47,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:54:47,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 16 [2024-11-08 09:54:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 09:54:47,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:48,334 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 27 treesize of output 25 [2024-11-08 09:54:48,336 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 54 treesize of output 50 [2024-11-08 09:54:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 190 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:54:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421115188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:48,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 17] total 60 [2024-11-08 09:54:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742889484] [2024-11-08 09:54:48,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:48,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 09:54:48,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 09:54:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=3266, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 09:54:48,435 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 60 states, 60 states have (on average 4.716666666666667) internal successors, (283), 60 states have internal predecessors, (283), 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 09:54:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:54:56,372 INFO L93 Difference]: Finished difference Result 463 states and 514 transitions. [2024-11-08 09:54:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-08 09:54:56,373 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.716666666666667) internal successors, (283), 60 states have internal predecessors, (283), 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 109 [2024-11-08 09:54:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:54:56,374 INFO L225 Difference]: With dead ends: 463 [2024-11-08 09:54:56,374 INFO L226 Difference]: Without dead ends: 404 [2024-11-08 09:54:56,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 189 SyntacticMatches, 4 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10370 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3938, Invalid=30472, Unknown=0, NotChecked=0, Total=34410 [2024-11-08 09:54:56,376 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1366 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 7079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:54:56,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 886 Invalid, 7079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 09:54:56,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-08 09:54:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 172. [2024-11-08 09:54:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0818713450292399) internal successors, (185), 171 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:54:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2024-11-08 09:54:56,399 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 109 [2024-11-08 09:54:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:54:56,399 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 185 transitions. [2024-11-08 09:54:56,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.716666666666667) internal successors, (283), 60 states have internal predecessors, (283), 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 09:54:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2024-11-08 09:54:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 09:54:56,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:54:56,400 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:54:56,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 09:54:56,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 09:54:56,601 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:54:56,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:54:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1194094140, now seen corresponding path program 10 times [2024-11-08 09:54:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:54:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369905062] [2024-11-08 09:54:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:54:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:54:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:54:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 09:54:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:54:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369905062] [2024-11-08 09:54:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369905062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:54:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367467793] [2024-11-08 09:54:57,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:54:57,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:54:57,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:54:57,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:54:57,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 09:54:57,547 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:54:57,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:54:57,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 09:54:57,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:54:57,644 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 11 treesize of output 7 [2024-11-08 09:54:57,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-08 09:54:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 09:54:58,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:54:58,227 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 09:54:58,228 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 09:54:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:54:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367467793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:54:58,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:54:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 17] total 38 [2024-11-08 09:54:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673696450] [2024-11-08 09:54:58,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:54:58,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 09:54:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:54:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 09:54:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 09:54:58,236 INFO L87 Difference]: Start difference. First operand 172 states and 185 transitions. Second operand has 38 states, 38 states have (on average 6.605263157894737) internal successors, (251), 38 states have internal predecessors, (251), 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 09:55:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:00,177 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2024-11-08 09:55:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-08 09:55:00,177 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.605263157894737) internal successors, (251), 38 states have internal predecessors, (251), 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 115 [2024-11-08 09:55:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:00,178 INFO L225 Difference]: With dead ends: 302 [2024-11-08 09:55:00,178 INFO L226 Difference]: Without dead ends: 300 [2024-11-08 09:55:00,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1041, Invalid=9671, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 09:55:00,179 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 328 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:00,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 532 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 09:55:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-08 09:55:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 178. [2024-11-08 09:55:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.0847457627118644) internal successors, (192), 177 states have internal predecessors, (192), 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 09:55:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2024-11-08 09:55:00,202 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 115 [2024-11-08 09:55:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:00,202 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2024-11-08 09:55:00,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.605263157894737) internal successors, (251), 38 states have internal predecessors, (251), 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 09:55:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2024-11-08 09:55:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 09:55:00,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:00,203 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:00,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 09:55:00,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 09:55:00,404 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:00,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1553741033, now seen corresponding path program 11 times [2024-11-08 09:55:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608812447] [2024-11-08 09:55:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 255 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:55:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608812447] [2024-11-08 09:55:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608812447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128392810] [2024-11-08 09:55:00,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:55:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:00,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:55:00,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 09:55:14,159 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 09:55:14,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:55:14,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 09:55:14,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 310 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:55:14,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 310 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:55:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128392810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:15,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:15,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2024-11-08 09:55:15,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193664317] [2024-11-08 09:55:15,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:15,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 09:55:15,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 09:55:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1903, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 09:55:15,266 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 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 09:55:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:15,761 INFO L93 Difference]: Finished difference Result 360 states and 381 transitions. [2024-11-08 09:55:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 09:55:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 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 121 [2024-11-08 09:55:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:15,762 INFO L225 Difference]: With dead ends: 360 [2024-11-08 09:55:15,763 INFO L226 Difference]: Without dead ends: 157 [2024-11-08 09:55:15,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=782, Invalid=2410, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 09:55:15,764 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 426 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:15,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 372 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:55:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-08 09:55:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2024-11-08 09:55:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0567375886524824) internal successors, (149), 141 states have internal predecessors, (149), 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 09:55:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2024-11-08 09:55:15,781 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 121 [2024-11-08 09:55:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:15,782 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2024-11-08 09:55:15,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 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 09:55:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2024-11-08 09:55:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-08 09:55:15,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:15,783 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:15,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 09:55:15,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 09:55:15,983 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:15,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1006355012, now seen corresponding path program 12 times [2024-11-08 09:55:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400129411] [2024-11-08 09:55:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat