./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.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 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:29:54,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:29:54,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:29:54,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:29:54,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:29:54,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:29:54,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:29:54,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:29:54,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:29:54,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:29:54,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:29:54,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:29:54,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:29:54,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:29:54,611 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:29:54,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:29:54,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:29:54,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:29:54,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:29:54,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:29:54,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:29:54,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:29:54,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:29:54,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:29:54,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:29:54,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:29:54,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:29:54,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:29:54,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:29:54,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:29:54,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:29:54,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:29:54,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:29:54,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:29:54,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:29:54,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:29:54,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:29:54,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:29:54,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:29:54,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:29:54,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:29:54,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:29:54,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 [2024-10-23 21:29:54,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:29:54,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:29:54,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:29:54,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:29:54,884 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:29:54,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-10-23 21:29:56,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:29:56,763 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:29:56,764 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-10-23 21:29:56,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a89c2043/f4090eeb2d384d75ad62018a8292be87/FLAG8e6ce9192 [2024-10-23 21:29:56,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a89c2043/f4090eeb2d384d75ad62018a8292be87 [2024-10-23 21:29:56,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:29:56,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:29:56,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:29:56,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:29:56,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:29:56,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:29:56" (1/1) ... [2024-10-23 21:29:56,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f176e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:56, skipping insertion in model container [2024-10-23 21:29:56,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:29:56" (1/1) ... [2024-10-23 21:29:56,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:29:57,215 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c[3929,3942] [2024-10-23 21:29:57,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:29:57,771 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:29:57,793 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c[3929,3942] [2024-10-23 21:29:58,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:29:58,091 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:29:58,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58 WrapperNode [2024-10-23 21:29:58,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:29:58,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:29:58,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:29:58,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:29:58,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,411 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:29:58,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:29:58,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:29:58,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:29:58,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:29:58,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,647 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:29:58,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:29:58,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:29:58,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:29:58,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:29:58,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (1/1) ... [2024-10-23 21:29:58,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:29:58,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:58,971 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) [2024-10-23 21:29:58,974 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 [2024-10-23 21:29:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:29:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:29:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:29:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:29:59,082 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:29:59,084 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:30:02,296 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:30:02,296 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:30:02,356 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:30:02,360 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:30:02,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:02 BoogieIcfgContainer [2024-10-23 21:30:02,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:30:02,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:30:02,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:30:02,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:30:02,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:29:56" (1/3) ... [2024-10-23 21:30:02,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164a5aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:02, skipping insertion in model container [2024-10-23 21:30:02,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:58" (2/3) ... [2024-10-23 21:30:02,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164a5aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:02, skipping insertion in model container [2024-10-23 21:30:02,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:02" (3/3) ... [2024-10-23 21:30:02,370 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2024-10-23 21:30:02,386 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:30:02,386 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:30:02,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:30:02,472 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;@1e194b1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:30:02,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:30:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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) [2024-10-23 21:30:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-23 21:30:02,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:02,483 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] [2024-10-23 21:30:02,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:02,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:02,488 INFO L85 PathProgramCache]: Analyzing trace with hash -600114276, now seen corresponding path program 1 times [2024-10-23 21:30:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:02,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456827393] [2024-10-23 21:30:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456827393] [2024-10-23 21:30:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456827393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:02,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278511989] [2024-10-23 21:30:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:02,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:30:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:30:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:02,685 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-10-23 21:30:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:02,765 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:30:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:30:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2024-10-23 21:30:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:02,786 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:30:02,786 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:30:02,791 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 [2024-10-23 21:30:02,795 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:02,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:30:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:30:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:30:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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) [2024-10-23 21:30:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:30:02,854 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 24 [2024-10-23 21:30:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:02,854 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:30:02,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-10-23 21:30:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:30:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-23 21:30:02,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:02,855 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] [2024-10-23 21:30:02,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:30:02,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:02,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1584642575, now seen corresponding path program 1 times [2024-10-23 21:30:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926462556] [2024-10-23 21:30:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:03,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926462556] [2024-10-23 21:30:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926462556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:03,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:03,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:03,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181657560] [2024-10-23 21:30:03,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:03,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:03,019 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-10-23 21:30:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:05,266 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-23 21:30:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2024-10-23 21:30:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:05,271 INFO L225 Difference]: With dead ends: 1501 [2024-10-23 21:30:05,271 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:30:05,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:05,273 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 447 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:05,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:30:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:30:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 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) [2024-10-23 21:30:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:30:05,310 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 24 [2024-10-23 21:30:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:05,311 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:30:05,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-10-23 21:30:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:30:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-23 21:30:05,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:05,317 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-23 21:30:05,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:30:05,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:05,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1549878346, now seen corresponding path program 1 times [2024-10-23 21:30:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:05,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959891815] [2024-10-23 21:30:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959891815] [2024-10-23 21:30:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959891815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012035333] [2024-10-23 21:30:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:05,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:05,526 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2024-10-23 21:30:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:07,746 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-23 21:30:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:07,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 [2024-10-23 21:30:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:07,754 INFO L225 Difference]: With dead ends: 2812 [2024-10-23 21:30:07,754 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:30:07,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:07,757 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:07,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:30:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-23 21:30:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 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) [2024-10-23 21:30:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-23 21:30:07,794 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 91 [2024-10-23 21:30:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:07,794 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-23 21:30:07,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2024-10-23 21:30:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-23 21:30:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-23 21:30:07,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:07,796 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-23 21:30:07,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:30:07,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:07,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 886024516, now seen corresponding path program 1 times [2024-10-23 21:30:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746794919] [2024-10-23 21:30:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:08,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746794919] [2024-10-23 21:30:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746794919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:08,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643165572] [2024-10-23 21:30:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:08,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:08,129 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-23 21:30:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:11,460 INFO L93 Difference]: Finished difference Result 6766 states and 9258 transitions. [2024-10-23 21:30:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2024-10-23 21:30:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:11,481 INFO L225 Difference]: With dead ends: 6766 [2024-10-23 21:30:11,481 INFO L226 Difference]: Without dead ends: 4927 [2024-10-23 21:30:11,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:11,490 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 889 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:11,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 325 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:30:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2024-10-23 21:30:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4874. [2024-10-23 21:30:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.2866817155756207) internal successors, (6270), 4873 states have internal predecessors, (6270), 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) [2024-10-23 21:30:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6270 transitions. [2024-10-23 21:30:11,573 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6270 transitions. Word has length 94 [2024-10-23 21:30:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:11,574 INFO L471 AbstractCegarLoop]: Abstraction has 4874 states and 6270 transitions. [2024-10-23 21:30:11,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-23 21:30:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6270 transitions. [2024-10-23 21:30:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-23 21:30:11,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:11,583 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:30:11,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:30:11,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:11,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1151183748, now seen corresponding path program 1 times [2024-10-23 21:30:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328414535] [2024-10-23 21:30:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:30:11,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328414535] [2024-10-23 21:30:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328414535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:11,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853512347] [2024-10-23 21:30:11,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:11,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:11,831 INFO L87 Difference]: Start difference. First operand 4874 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-10-23 21:30:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:13,491 INFO L93 Difference]: Finished difference Result 14435 states and 18543 transitions. [2024-10-23 21:30:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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 163 [2024-10-23 21:30:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:13,518 INFO L225 Difference]: With dead ends: 14435 [2024-10-23 21:30:13,519 INFO L226 Difference]: Without dead ends: 8276 [2024-10-23 21:30:13,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:13,531 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:13,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2024-10-23 21:30:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6575. [2024-10-23 21:30:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.179342865835108) internal successors, (7753), 6574 states have internal predecessors, (7753), 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) [2024-10-23 21:30:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 7753 transitions. [2024-10-23 21:30:13,650 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 7753 transitions. Word has length 163 [2024-10-23 21:30:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:13,651 INFO L471 AbstractCegarLoop]: Abstraction has 6575 states and 7753 transitions. [2024-10-23 21:30:13,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-10-23 21:30:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 7753 transitions. [2024-10-23 21:30:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-23 21:30:13,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:13,655 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-10-23 21:30:13,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:30:13,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:13,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:13,656 INFO L85 PathProgramCache]: Analyzing trace with hash 685131150, now seen corresponding path program 1 times [2024-10-23 21:30:13,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767070002] [2024-10-23 21:30:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:13,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:13,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767070002] [2024-10-23 21:30:13,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767070002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:13,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:13,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131026816] [2024-10-23 21:30:13,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:13,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:13,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:13,876 INFO L87 Difference]: Start difference. First operand 6575 states and 7753 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-10-23 21:30:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:15,504 INFO L93 Difference]: Finished difference Result 16559 states and 19930 transitions. [2024-10-23 21:30:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:15,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 176 [2024-10-23 21:30:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:15,539 INFO L225 Difference]: With dead ends: 16559 [2024-10-23 21:30:15,540 INFO L226 Difference]: Without dead ends: 9985 [2024-10-23 21:30:15,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:15,555 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:15,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2024-10-23 21:30:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9985. [2024-10-23 21:30:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9985 states, 9984 states have (on average 1.1696714743589745) internal successors, (11678), 9984 states have internal predecessors, (11678), 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) [2024-10-23 21:30:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9985 states to 9985 states and 11678 transitions. [2024-10-23 21:30:15,735 INFO L78 Accepts]: Start accepts. Automaton has 9985 states and 11678 transitions. Word has length 176 [2024-10-23 21:30:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:15,735 INFO L471 AbstractCegarLoop]: Abstraction has 9985 states and 11678 transitions. [2024-10-23 21:30:15,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-10-23 21:30:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9985 states and 11678 transitions. [2024-10-23 21:30:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-23 21:30:15,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:15,738 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:30:15,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:30:15,738 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:15,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1371372173, now seen corresponding path program 1 times [2024-10-23 21:30:15,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:15,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184481944] [2024-10-23 21:30:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:15,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:30:15,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184481944] [2024-10-23 21:30:15,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184481944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:15,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:15,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:15,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617597768] [2024-10-23 21:30:15,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:15,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:15,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:15,887 INFO L87 Difference]: Start difference. First operand 9985 states and 11678 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-23 21:30:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:17,528 INFO L93 Difference]: Finished difference Result 25066 states and 29586 transitions. [2024-10-23 21:30:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:17,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 178 [2024-10-23 21:30:17,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:17,558 INFO L225 Difference]: With dead ends: 25066 [2024-10-23 21:30:17,558 INFO L226 Difference]: Without dead ends: 15082 [2024-10-23 21:30:17,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:17,570 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 428 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:17,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 484 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15082 states. [2024-10-23 21:30:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15082 to 10383. [2024-10-23 21:30:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10383 states, 10382 states have (on average 1.1651897514929686) internal successors, (12097), 10382 states have internal predecessors, (12097), 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) [2024-10-23 21:30:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10383 states to 10383 states and 12097 transitions. [2024-10-23 21:30:17,744 INFO L78 Accepts]: Start accepts. Automaton has 10383 states and 12097 transitions. Word has length 178 [2024-10-23 21:30:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:17,745 INFO L471 AbstractCegarLoop]: Abstraction has 10383 states and 12097 transitions. [2024-10-23 21:30:17,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-23 21:30:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10383 states and 12097 transitions. [2024-10-23 21:30:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-23 21:30:17,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:17,747 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:30:17,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:30:17,747 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:17,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1851122065, now seen corresponding path program 1 times [2024-10-23 21:30:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102425141] [2024-10-23 21:30:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:17,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:17,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102425141] [2024-10-23 21:30:17,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102425141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:17,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:17,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113678117] [2024-10-23 21:30:17,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:17,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:17,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:17,904 INFO L87 Difference]: Start difference. First operand 10383 states and 12097 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-10-23 21:30:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:19,738 INFO L93 Difference]: Finished difference Result 25873 states and 30416 transitions. [2024-10-23 21:30:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:19,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) Word has length 191 [2024-10-23 21:30:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:19,764 INFO L225 Difference]: With dead ends: 25873 [2024-10-23 21:30:19,765 INFO L226 Difference]: Without dead ends: 15491 [2024-10-23 21:30:19,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:19,777 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 452 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:19,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 446 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:30:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2024-10-23 21:30:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 13777. [2024-10-23 21:30:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 1.166521486643438) internal successors, (16070), 13776 states have internal predecessors, (16070), 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) [2024-10-23 21:30:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 16070 transitions. [2024-10-23 21:30:19,960 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 16070 transitions. Word has length 191 [2024-10-23 21:30:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:19,961 INFO L471 AbstractCegarLoop]: Abstraction has 13777 states and 16070 transitions. [2024-10-23 21:30:19,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-10-23 21:30:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 16070 transitions. [2024-10-23 21:30:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-23 21:30:19,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:19,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:19,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:30:19,967 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:19,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2061680685, now seen corresponding path program 1 times [2024-10-23 21:30:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014527081] [2024-10-23 21:30:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:20,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014527081] [2024-10-23 21:30:20,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014527081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:20,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:20,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760146783] [2024-10-23 21:30:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:20,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:20,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:20,117 INFO L87 Difference]: Start difference. First operand 13777 states and 16070 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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) [2024-10-23 21:30:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:22,007 INFO L93 Difference]: Finished difference Result 32233 states and 37931 transitions. [2024-10-23 21:30:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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 223 [2024-10-23 21:30:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:22,033 INFO L225 Difference]: With dead ends: 32233 [2024-10-23 21:30:22,034 INFO L226 Difference]: Without dead ends: 18457 [2024-10-23 21:30:22,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:22,048 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 466 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:22,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 414 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:30:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18457 states. [2024-10-23 21:30:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18457 to 17175. [2024-10-23 21:30:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17175 states, 17174 states have (on average 1.1833585652730871) internal successors, (20323), 17174 states have internal predecessors, (20323), 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) [2024-10-23 21:30:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17175 states to 17175 states and 20323 transitions. [2024-10-23 21:30:22,249 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 20323 transitions. Word has length 223 [2024-10-23 21:30:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:22,250 INFO L471 AbstractCegarLoop]: Abstraction has 17175 states and 20323 transitions. [2024-10-23 21:30:22,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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) [2024-10-23 21:30:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 20323 transitions. [2024-10-23 21:30:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-23 21:30:22,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:22,261 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-10-23 21:30:22,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:30:22,261 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:22,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1743968733, now seen corresponding path program 1 times [2024-10-23 21:30:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053384377] [2024-10-23 21:30:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:22,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:22,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053384377] [2024-10-23 21:30:22,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053384377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:22,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:22,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176253402] [2024-10-23 21:30:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:22,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:22,608 INFO L87 Difference]: Start difference. First operand 17175 states and 20323 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2024-10-23 21:30:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:24,481 INFO L93 Difference]: Finished difference Result 39056 states and 46414 transitions. [2024-10-23 21:30:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 240 [2024-10-23 21:30:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:24,516 INFO L225 Difference]: With dead ends: 39056 [2024-10-23 21:30:24,516 INFO L226 Difference]: Without dead ends: 21457 [2024-10-23 21:30:24,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:24,535 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 356 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:24,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 861 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:30:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21457 states. [2024-10-23 21:30:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21457 to 21024. [2024-10-23 21:30:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21024 states, 21023 states have (on average 1.1667221614422298) internal successors, (24528), 21023 states have internal predecessors, (24528), 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) [2024-10-23 21:30:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21024 states to 21024 states and 24528 transitions. [2024-10-23 21:30:24,766 INFO L78 Accepts]: Start accepts. Automaton has 21024 states and 24528 transitions. Word has length 240 [2024-10-23 21:30:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:24,767 INFO L471 AbstractCegarLoop]: Abstraction has 21024 states and 24528 transitions. [2024-10-23 21:30:24,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2024-10-23 21:30:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 21024 states and 24528 transitions. [2024-10-23 21:30:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-10-23 21:30:24,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:24,771 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:30:24,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:30:24,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:24,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -833376442, now seen corresponding path program 1 times [2024-10-23 21:30:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579198619] [2024-10-23 21:30:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 184 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:30:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579198619] [2024-10-23 21:30:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579198619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449259436] [2024-10-23 21:30:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:25,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:30:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:25,144 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) [2024-10-23 21:30:25,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:30:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:25,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:30:25,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:30:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 184 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:30:25,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:30:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:30:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449259436] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:25,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:30:25,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:30:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246494520] [2024-10-23 21:30:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:25,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:25,843 INFO L87 Difference]: Start difference. First operand 21024 states and 24528 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2024-10-23 21:30:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:28,712 INFO L93 Difference]: Finished difference Result 59099 states and 69387 transitions. [2024-10-23 21:30:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:28,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 248 [2024-10-23 21:30:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:28,765 INFO L225 Difference]: With dead ends: 59099 [2024-10-23 21:30:28,766 INFO L226 Difference]: Without dead ends: 37212 [2024-10-23 21:30:28,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:28,784 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 878 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:28,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 155 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:30:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37212 states. [2024-10-23 21:30:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37212 to 35505. [2024-10-23 21:30:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35505 states, 35504 states have (on average 1.159108832807571) internal successors, (41153), 35504 states have internal predecessors, (41153), 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) [2024-10-23 21:30:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35505 states to 35505 states and 41153 transitions. [2024-10-23 21:30:29,223 INFO L78 Accepts]: Start accepts. Automaton has 35505 states and 41153 transitions. Word has length 248 [2024-10-23 21:30:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:29,223 INFO L471 AbstractCegarLoop]: Abstraction has 35505 states and 41153 transitions. [2024-10-23 21:30:29,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2024-10-23 21:30:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 35505 states and 41153 transitions. [2024-10-23 21:30:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-10-23 21:30:29,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:29,226 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:29,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:30:29,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 21:30:29,427 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:29,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1940912913, now seen corresponding path program 1 times [2024-10-23 21:30:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649873772] [2024-10-23 21:30:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-23 21:30:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649873772] [2024-10-23 21:30:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649873772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163416970] [2024-10-23 21:30:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:29,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:29,577 INFO L87 Difference]: Start difference. First operand 35505 states and 41153 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2024-10-23 21:30:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:31,238 INFO L93 Difference]: Finished difference Result 78653 states and 91328 transitions. [2024-10-23 21:30:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:31,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 256 [2024-10-23 21:30:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:31,291 INFO L225 Difference]: With dead ends: 78653 [2024-10-23 21:30:31,291 INFO L226 Difference]: Without dead ends: 42722 [2024-10-23 21:30:31,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:31,314 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 380 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:31,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 847 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42722 states. [2024-10-23 21:30:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42722 to 42722. [2024-10-23 21:30:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42722 states, 42721 states have (on average 1.117085274221109) internal successors, (47723), 42721 states have internal predecessors, (47723), 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) [2024-10-23 21:30:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42722 states to 42722 states and 47723 transitions. [2024-10-23 21:30:31,669 INFO L78 Accepts]: Start accepts. Automaton has 42722 states and 47723 transitions. Word has length 256 [2024-10-23 21:30:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:31,670 INFO L471 AbstractCegarLoop]: Abstraction has 42722 states and 47723 transitions. [2024-10-23 21:30:31,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2024-10-23 21:30:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 42722 states and 47723 transitions. [2024-10-23 21:30:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-23 21:30:31,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:31,673 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:31,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:30:31,674 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:31,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:31,674 INFO L85 PathProgramCache]: Analyzing trace with hash -542220727, now seen corresponding path program 1 times [2024-10-23 21:30:31,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:31,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246334913] [2024-10-23 21:30:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 325 proven. 73 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:30:32,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246334913] [2024-10-23 21:30:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246334913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:32,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323131892] [2024-10-23 21:30:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:32,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:30:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:32,104 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) [2024-10-23 21:30:32,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:30:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:32,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:30:32,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:30:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 325 proven. 73 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:30:32,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:30:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:30:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323131892] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:30:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:30:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423982700] [2024-10-23 21:30:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:32,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:32,675 INFO L87 Difference]: Start difference. First operand 42722 states and 47723 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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) [2024-10-23 21:30:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:35,287 INFO L93 Difference]: Finished difference Result 101642 states and 113663 transitions. [2024-10-23 21:30:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:35,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 322 [2024-10-23 21:30:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:35,352 INFO L225 Difference]: With dead ends: 101642 [2024-10-23 21:30:35,353 INFO L226 Difference]: Without dead ends: 58492 [2024-10-23 21:30:35,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:35,379 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 879 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:35,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 169 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58492 states. [2024-10-23 21:30:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58492 to 55939. [2024-10-23 21:30:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55939 states, 55938 states have (on average 1.121062605026994) internal successors, (62710), 55938 states have internal predecessors, (62710), 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) [2024-10-23 21:30:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55939 states to 55939 states and 62710 transitions. [2024-10-23 21:30:36,108 INFO L78 Accepts]: Start accepts. Automaton has 55939 states and 62710 transitions. Word has length 322 [2024-10-23 21:30:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:36,109 INFO L471 AbstractCegarLoop]: Abstraction has 55939 states and 62710 transitions. [2024-10-23 21:30:36,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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) [2024-10-23 21:30:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 55939 states and 62710 transitions. [2024-10-23 21:30:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-23 21:30:36,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:36,120 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:36,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:30:36,321 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,SelfDestructingSolverStorable12 [2024-10-23 21:30:36,322 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:36,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2141000439, now seen corresponding path program 1 times [2024-10-23 21:30:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051608315] [2024-10-23 21:30:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-23 21:30:36,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:36,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051608315] [2024-10-23 21:30:36,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051608315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:36,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:36,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837584655] [2024-10-23 21:30:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:36,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:36,860 INFO L87 Difference]: Start difference. First operand 55939 states and 62710 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2024-10-23 21:30:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:38,505 INFO L93 Difference]: Finished difference Result 121240 states and 135986 transitions. [2024-10-23 21:30:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 419 [2024-10-23 21:30:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:38,574 INFO L225 Difference]: With dead ends: 121240 [2024-10-23 21:30:38,574 INFO L226 Difference]: Without dead ends: 64877 [2024-10-23 21:30:38,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:38,605 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 339 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:38,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 771 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:30:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64877 states. [2024-10-23 21:30:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64877 to 53349. [2024-10-23 21:30:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53349 states, 53348 states have (on average 1.107689135487741) internal successors, (59093), 53348 states have internal predecessors, (59093), 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) [2024-10-23 21:30:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53349 states to 53349 states and 59093 transitions. [2024-10-23 21:30:39,448 INFO L78 Accepts]: Start accepts. Automaton has 53349 states and 59093 transitions. Word has length 419 [2024-10-23 21:30:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:39,449 INFO L471 AbstractCegarLoop]: Abstraction has 53349 states and 59093 transitions. [2024-10-23 21:30:39,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2024-10-23 21:30:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 53349 states and 59093 transitions. [2024-10-23 21:30:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-23 21:30:39,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:39,461 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:39,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:30:39,461 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:39,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1277630492, now seen corresponding path program 1 times [2024-10-23 21:30:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863663088] [2024-10-23 21:30:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-23 21:30:40,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863663088] [2024-10-23 21:30:40,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863663088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:40,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:40,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:40,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058423482] [2024-10-23 21:30:40,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:40,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:40,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:40,050 INFO L87 Difference]: Start difference. First operand 53349 states and 59093 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-10-23 21:30:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:41,756 INFO L93 Difference]: Finished difference Result 119900 states and 132833 transitions. [2024-10-23 21:30:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:41,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 420 [2024-10-23 21:30:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:41,820 INFO L225 Difference]: With dead ends: 119900 [2024-10-23 21:30:41,820 INFO L226 Difference]: Without dead ends: 63989 [2024-10-23 21:30:41,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:41,848 INFO L432 NwaCegarLoop]: 618 mSDtfsCounter, 437 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:41,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 656 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63989 states. [2024-10-23 21:30:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63989 to 61850. [2024-10-23 21:30:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61850 states, 61849 states have (on average 1.0961211984025612) internal successors, (67794), 61849 states have internal predecessors, (67794), 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) [2024-10-23 21:30:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61850 states to 61850 states and 67794 transitions. [2024-10-23 21:30:42,713 INFO L78 Accepts]: Start accepts. Automaton has 61850 states and 67794 transitions. Word has length 420 [2024-10-23 21:30:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:42,714 INFO L471 AbstractCegarLoop]: Abstraction has 61850 states and 67794 transitions. [2024-10-23 21:30:42,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-10-23 21:30:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 61850 states and 67794 transitions. [2024-10-23 21:30:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-10-23 21:30:42,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:42,726 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:42,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:30:42,727 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:42,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash -77684117, now seen corresponding path program 1 times [2024-10-23 21:30:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:42,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971635409] [2024-10-23 21:30:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:30:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971635409] [2024-10-23 21:30:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971635409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:43,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:43,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:43,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392353927] [2024-10-23 21:30:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:43,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:43,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:43,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:43,550 INFO L87 Difference]: Start difference. First operand 61850 states and 67794 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 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) [2024-10-23 21:30:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:46,172 INFO L93 Difference]: Finished difference Result 145470 states and 159570 transitions. [2024-10-23 21:30:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:46,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 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 424 [2024-10-23 21:30:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:46,272 INFO L225 Difference]: With dead ends: 145470 [2024-10-23 21:30:46,272 INFO L226 Difference]: Without dead ends: 83621 [2024-10-23 21:30:46,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:46,443 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 827 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:46,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 204 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83621 states. [2024-10-23 21:30:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83621 to 78924. [2024-10-23 21:30:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78924 states, 78923 states have (on average 1.097968906402443) internal successors, (86655), 78923 states have internal predecessors, (86655), 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) [2024-10-23 21:30:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78924 states to 78924 states and 86655 transitions. [2024-10-23 21:30:47,247 INFO L78 Accepts]: Start accepts. Automaton has 78924 states and 86655 transitions. Word has length 424 [2024-10-23 21:30:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:47,248 INFO L471 AbstractCegarLoop]: Abstraction has 78924 states and 86655 transitions. [2024-10-23 21:30:47,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 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) [2024-10-23 21:30:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 78924 states and 86655 transitions. [2024-10-23 21:30:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-10-23 21:30:47,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:47,253 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:47,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:30:47,253 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:47,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1111388577, now seen corresponding path program 1 times [2024-10-23 21:30:47,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:47,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753536834] [2024-10-23 21:30:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-23 21:30:47,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753536834] [2024-10-23 21:30:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753536834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:47,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838127624] [2024-10-23 21:30:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:47,786 INFO L87 Difference]: Start difference. First operand 78924 states and 86655 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-10-23 21:30:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:49,561 INFO L93 Difference]: Finished difference Result 167642 states and 184227 transitions. [2024-10-23 21:30:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 443 [2024-10-23 21:30:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:49,652 INFO L225 Difference]: With dead ends: 167642 [2024-10-23 21:30:49,652 INFO L226 Difference]: Without dead ends: 88719 [2024-10-23 21:30:49,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:49,697 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 386 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:49,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 326 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88719 states. [2024-10-23 21:30:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88719 to 88285. [2024-10-23 21:30:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88285 states, 88284 states have (on average 1.095340038965158) internal successors, (96701), 88284 states have internal predecessors, (96701), 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) [2024-10-23 21:30:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88285 states to 88285 states and 96701 transitions. [2024-10-23 21:30:51,111 INFO L78 Accepts]: Start accepts. Automaton has 88285 states and 96701 transitions. Word has length 443 [2024-10-23 21:30:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:51,111 INFO L471 AbstractCegarLoop]: Abstraction has 88285 states and 96701 transitions. [2024-10-23 21:30:51,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-10-23 21:30:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 88285 states and 96701 transitions. [2024-10-23 21:30:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-10-23 21:30:51,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:51,117 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-10-23 21:30:51,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:30:51,117 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:51,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -349572559, now seen corresponding path program 1 times [2024-10-23 21:30:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145677575] [2024-10-23 21:30:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-10-23 21:30:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145677575] [2024-10-23 21:30:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145677575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:51,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:51,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208947875] [2024-10-23 21:30:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:51,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:51,342 INFO L87 Difference]: Start difference. First operand 88285 states and 96701 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-10-23 21:30:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:53,205 INFO L93 Difference]: Finished difference Result 190189 states and 208576 transitions. [2024-10-23 21:30:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 467 [2024-10-23 21:30:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:53,322 INFO L225 Difference]: With dead ends: 190189 [2024-10-23 21:30:53,322 INFO L226 Difference]: Without dead ends: 101905 [2024-10-23 21:30:53,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:53,377 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 474 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:53,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 262 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101905 states. [2024-10-23 21:30:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101905 to 101448. [2024-10-23 21:30:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101448 states, 101447 states have (on average 1.0927972241663135) internal successors, (110861), 101447 states have internal predecessors, (110861), 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) [2024-10-23 21:30:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101448 states to 101448 states and 110861 transitions. [2024-10-23 21:30:54,951 INFO L78 Accepts]: Start accepts. Automaton has 101448 states and 110861 transitions. Word has length 467 [2024-10-23 21:30:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:54,951 INFO L471 AbstractCegarLoop]: Abstraction has 101448 states and 110861 transitions. [2024-10-23 21:30:54,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-10-23 21:30:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 101448 states and 110861 transitions. [2024-10-23 21:30:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-10-23 21:30:54,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:54,960 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:54,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:30:54,961 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:54,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -496095149, now seen corresponding path program 1 times [2024-10-23 21:30:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:54,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150310898] [2024-10-23 21:30:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-23 21:30:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150310898] [2024-10-23 21:30:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150310898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:55,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:55,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245508187] [2024-10-23 21:30:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:55,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:55,274 INFO L87 Difference]: Start difference. First operand 101448 states and 110861 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-10-23 21:30:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:57,306 INFO L93 Difference]: Finished difference Result 208446 states and 227580 transitions. [2024-10-23 21:30:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 470 [2024-10-23 21:30:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:57,419 INFO L225 Difference]: With dead ends: 208446 [2024-10-23 21:30:57,419 INFO L226 Difference]: Without dead ends: 105292 [2024-10-23 21:30:57,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:57,477 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 424 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:57,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 804 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105292 states. [2024-10-23 21:30:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105292 to 102291. [2024-10-23 21:30:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102291 states, 102290 states have (on average 1.0912112620979568) internal successors, (111620), 102290 states have internal predecessors, (111620), 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) [2024-10-23 21:30:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102291 states to 102291 states and 111620 transitions. [2024-10-23 21:30:59,034 INFO L78 Accepts]: Start accepts. Automaton has 102291 states and 111620 transitions. Word has length 470 [2024-10-23 21:30:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:59,035 INFO L471 AbstractCegarLoop]: Abstraction has 102291 states and 111620 transitions. [2024-10-23 21:30:59,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-10-23 21:30:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 102291 states and 111620 transitions. [2024-10-23 21:30:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2024-10-23 21:30:59,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:59,044 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-10-23 21:30:59,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:30:59,044 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:59,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1505887546, now seen corresponding path program 1 times [2024-10-23 21:30:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633537669] [2024-10-23 21:30:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-10-23 21:30:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633537669] [2024-10-23 21:30:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633537669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:59,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59621028] [2024-10-23 21:30:59,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:59,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:59,897 INFO L87 Difference]: Start difference. First operand 102291 states and 111620 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2024-10-23 21:31:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:02,943 INFO L93 Difference]: Finished difference Result 212666 states and 231694 transitions. [2024-10-23 21:31:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 508 [2024-10-23 21:31:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:03,055 INFO L225 Difference]: With dead ends: 212666 [2024-10-23 21:31:03,056 INFO L226 Difference]: Without dead ends: 110370 [2024-10-23 21:31:03,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:03,088 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 790 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:03,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 380 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:31:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110370 states. [2024-10-23 21:31:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110370 to 106115. [2024-10-23 21:31:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106115 states, 106114 states have (on average 1.0807527753171118) internal successors, (114683), 106114 states have internal predecessors, (114683), 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) [2024-10-23 21:31:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106115 states to 106115 states and 114683 transitions. [2024-10-23 21:31:04,345 INFO L78 Accepts]: Start accepts. Automaton has 106115 states and 114683 transitions. Word has length 508 [2024-10-23 21:31:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:04,346 INFO L471 AbstractCegarLoop]: Abstraction has 106115 states and 114683 transitions. [2024-10-23 21:31:04,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2024-10-23 21:31:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 106115 states and 114683 transitions. [2024-10-23 21:31:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-10-23 21:31:04,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:04,357 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 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, 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, 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, 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] [2024-10-23 21:31:04,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:31:04,357 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:04,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -681036295, now seen corresponding path program 1 times [2024-10-23 21:31:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153192200] [2024-10-23 21:31:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:31:05,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153192200] [2024-10-23 21:31:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153192200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:05,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626472226] [2024-10-23 21:31:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:05,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:05,084 INFO L87 Difference]: Start difference. First operand 106115 states and 114683 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-10-23 21:31:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:06,544 INFO L93 Difference]: Finished difference Result 207542 states and 224267 transitions. [2024-10-23 21:31:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 528 [2024-10-23 21:31:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:06,655 INFO L225 Difference]: With dead ends: 207542 [2024-10-23 21:31:06,655 INFO L226 Difference]: Without dead ends: 101853 [2024-10-23 21:31:07,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:07,063 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 471 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:07,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 692 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:31:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101853 states. [2024-10-23 21:31:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101853 to 98871. [2024-10-23 21:31:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98871 states, 98870 states have (on average 1.0673409527662587) internal successors, (105528), 98870 states have internal predecessors, (105528), 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) [2024-10-23 21:31:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98871 states to 98871 states and 105528 transitions. [2024-10-23 21:31:08,605 INFO L78 Accepts]: Start accepts. Automaton has 98871 states and 105528 transitions. Word has length 528 [2024-10-23 21:31:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:08,605 INFO L471 AbstractCegarLoop]: Abstraction has 98871 states and 105528 transitions. [2024-10-23 21:31:08,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-10-23 21:31:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 98871 states and 105528 transitions. [2024-10-23 21:31:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-10-23 21:31:08,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:08,616 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:08,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:31:08,616 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:08,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1953397695, now seen corresponding path program 1 times [2024-10-23 21:31:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819981325] [2024-10-23 21:31:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 580 proven. 141 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:31:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819981325] [2024-10-23 21:31:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819981325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324153845] [2024-10-23 21:31:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:09,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:09,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:09,726 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) [2024-10-23 21:31:09,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:31:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:09,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:31:09,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:31:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-23 21:31:10,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:31:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324153845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:31:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-23 21:31:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389609801] [2024-10-23 21:31:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:10,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:31:10,386 INFO L87 Difference]: Start difference. First operand 98871 states and 105528 transitions. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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)