./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_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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_label29.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 e1d19cb304638f43d39081097001c07d13a3f7b236de84abf3505fba1ece23c0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:31:13,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:31:13,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:31:13,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:31:13,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:31:13,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:31:13,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:31:13,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:31:13,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:31:13,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:31:13,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:31:13,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:31:13,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:31:13,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:31:13,643 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:31:13,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:31:13,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:31:13,646 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:31:13,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:31:13,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:31:13,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:31:13,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:31:13,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:31:13,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:31:13,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:31:13,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:31:13,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:31:13,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:31:13,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:31:13,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:31:13,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:31:13,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:31:13,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:13,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:31:13,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:31:13,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:31:13,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:31:13,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:31:13,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:31:13,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:31:13,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:31:13,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:31:13,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1d19cb304638f43d39081097001c07d13a3f7b236de84abf3505fba1ece23c0 [2024-11-19 18:31:13,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:31:13,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:31:13,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:31:13,864 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:31:13,865 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:31:13,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label29.c [2024-11-19 18:31:15,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:31:15,379 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:31:15,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label29.c [2024-11-19 18:31:15,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800d4a0f5/11a3234c870141b78e16ea90b60cfb67/FLAGe91f9a45e [2024-11-19 18:31:15,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800d4a0f5/11a3234c870141b78e16ea90b60cfb67 [2024-11-19 18:31:15,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:31:15,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:31:15,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:15,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:31:15,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:31:15,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:15" (1/1) ... [2024-11-19 18:31:15,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597dfbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:15, skipping insertion in model container [2024-11-19 18:31:15,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:15" (1/1) ... [2024-11-19 18:31:15,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:31:15,734 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label29.c[9671,9684] [2024-11-19 18:31:16,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:16,073 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:31:16,099 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label29.c[9671,9684] [2024-11-19 18:31:16,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:16,337 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:31:16,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16 WrapperNode [2024-11-19 18:31:16,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:16,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:16,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:31:16,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:31:16,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,612 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-19 18:31:16,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:16,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:31:16,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:31:16,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:31:16,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,743 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:31:16,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:31:16,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:31:16,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:31:16,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:31:16,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (1/1) ... [2024-11-19 18:31:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:16,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:31:16,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 18:31:16,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 18:31:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:31:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:31:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:31:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:31:17,025 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:31:17,026 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:31:19,350 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-19 18:31:19,351 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:31:19,369 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:31:19,370 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:31:19,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:19 BoogieIcfgContainer [2024-11-19 18:31:19,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:31:19,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:31:19,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:31:19,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:31:19,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:15" (1/3) ... [2024-11-19 18:31:19,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9da1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:19, skipping insertion in model container [2024-11-19 18:31:19,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:16" (2/3) ... [2024-11-19 18:31:19,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9da1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:19, skipping insertion in model container [2024-11-19 18:31:19,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:19" (3/3) ... [2024-11-19 18:31:19,376 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2024-11-19 18:31:19,390 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:31:19,390 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:31:19,450 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:31:19,459 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;@17a026f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:31:19,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:31:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 18:31:19,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:19,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:19,471 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:19,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times [2024-11-19 18:31:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78669316] [2024-11-19 18:31:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78669316] [2024-11-19 18:31:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78669316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:19,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583380314] [2024-11-19 18:31:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:19,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:19,819 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:21,864 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-19 18:31:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:21,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-19 18:31:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:21,880 INFO L225 Difference]: With dead ends: 1642 [2024-11-19 18:31:21,880 INFO L226 Difference]: Without dead ends: 975 [2024-11-19 18:31:21,883 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 [2024-11-19 18:31:21,886 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 425 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:21,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:31:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-19 18:31:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-19 18:31:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-19 18:31:21,964 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 65 [2024-11-19 18:31:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:21,964 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-19 18:31:21,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-19 18:31:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 18:31:21,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:21,968 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, 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] [2024-11-19 18:31:21,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:31:21,969 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:21,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash -530244436, now seen corresponding path program 1 times [2024-11-19 18:31:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:21,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722688608] [2024-11-19 18:31:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722688608] [2024-11-19 18:31:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722688608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:22,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578363907] [2024-11-19 18:31:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:22,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:22,253 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:23,917 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-19 18:31:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2024-11-19 18:31:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:23,923 INFO L225 Difference]: With dead ends: 2814 [2024-11-19 18:31:23,923 INFO L226 Difference]: Without dead ends: 1844 [2024-11-19 18:31:23,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:23,926 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 426 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:23,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:31:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-19 18:31:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-19 18:31:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-19 18:31:23,954 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 135 [2024-11-19 18:31:23,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:23,956 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-19 18:31:23,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:23,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-19 18:31:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-19 18:31:23,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:23,964 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, 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] [2024-11-19 18:31:23,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:31:23,965 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:23,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1302726167, now seen corresponding path program 1 times [2024-11-19 18:31:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698305444] [2024-11-19 18:31:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698305444] [2024-11-19 18:31:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698305444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:24,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:24,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:24,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888454883] [2024-11-19 18:31:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:24,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:24,169 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:25,626 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-19 18:31:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 157 [2024-11-19 18:31:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:25,633 INFO L225 Difference]: With dead ends: 5395 [2024-11-19 18:31:25,633 INFO L226 Difference]: Without dead ends: 2701 [2024-11-19 18:31:25,636 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 [2024-11-19 18:31:25,636 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:25,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:31:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-19 18:31:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-19 18:31:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-19 18:31:25,680 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 157 [2024-11-19 18:31:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:25,681 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-19 18:31:25,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-19 18:31:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-19 18:31:25,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:25,688 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:25,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:31:25,689 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:25,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1860732790, now seen corresponding path program 1 times [2024-11-19 18:31:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288497494] [2024-11-19 18:31:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288497494] [2024-11-19 18:31:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288497494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:25,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:25,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874550056] [2024-11-19 18:31:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:25,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:25,907 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:27,151 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-19 18:31:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:27,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2024-11-19 18:31:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:27,163 INFO L225 Difference]: With dead ends: 7108 [2024-11-19 18:31:27,163 INFO L226 Difference]: Without dead ends: 4409 [2024-11-19 18:31:27,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:27,167 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:27,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:31:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-19 18:31:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-19 18:31:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-19 18:31:27,217 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 217 [2024-11-19 18:31:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:27,217 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-19 18:31:27,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-19 18:31:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-19 18:31:27,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:27,222 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:27,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:31:27,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:27,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1568238683, now seen corresponding path program 1 times [2024-11-19 18:31:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812126176] [2024-11-19 18:31:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 18:31:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812126176] [2024-11-19 18:31:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812126176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:27,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506015110] [2024-11-19 18:31:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:27,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:27,413 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:28,591 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-19 18:31:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:28,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 219 [2024-11-19 18:31:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:28,606 INFO L225 Difference]: With dead ends: 10936 [2024-11-19 18:31:28,606 INFO L226 Difference]: Without dead ends: 6528 [2024-11-19 18:31:28,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:28,611 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 386 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:28,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:31:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-19 18:31:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-19 18:31:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-19 18:31:28,665 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 219 [2024-11-19 18:31:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:28,665 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-19 18:31:28,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-19 18:31:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-19 18:31:28,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:28,668 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:28,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:31:28,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:28,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1846468523, now seen corresponding path program 1 times [2024-11-19 18:31:28,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405737583] [2024-11-19 18:31:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:28,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:31:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:28,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405737583] [2024-11-19 18:31:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405737583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:28,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554181851] [2024-11-19 18:31:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:28,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:28,930 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:30,384 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2024-11-19 18:31:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 285 [2024-11-19 18:31:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:30,397 INFO L225 Difference]: With dead ends: 10045 [2024-11-19 18:31:30,397 INFO L226 Difference]: Without dead ends: 5665 [2024-11-19 18:31:30,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:30,401 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 371 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:30,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:31:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2024-11-19 18:31:30,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2024-11-19 18:31:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2024-11-19 18:31:30,452 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 285 [2024-11-19 18:31:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:30,452 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2024-11-19 18:31:30,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2024-11-19 18:31:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-19 18:31:30,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:30,455 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:30,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:31:30,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:30,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 306835577, now seen corresponding path program 1 times [2024-11-19 18:31:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471739934] [2024-11-19 18:31:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-19 18:31:30,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:30,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471739934] [2024-11-19 18:31:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471739934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:30,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:30,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967862718] [2024-11-19 18:31:30,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:30,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:30,597 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:31,986 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2024-11-19 18:31:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 297 [2024-11-19 18:31:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:32,005 INFO L225 Difference]: With dead ends: 12593 [2024-11-19 18:31:32,006 INFO L226 Difference]: Without dead ends: 6936 [2024-11-19 18:31:32,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:32,012 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:32,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:31:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2024-11-19 18:31:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2024-11-19 18:31:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2024-11-19 18:31:32,087 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 297 [2024-11-19 18:31:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:32,087 INFO L471 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2024-11-19 18:31:32,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2024-11-19 18:31:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-19 18:31:32,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:32,091 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:31:32,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:31:32,092 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -672579372, now seen corresponding path program 1 times [2024-11-19 18:31:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305401307] [2024-11-19 18:31:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-19 18:31:32,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:32,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305401307] [2024-11-19 18:31:32,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305401307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:32,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:32,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:32,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096002362] [2024-11-19 18:31:32,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:32,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:32,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:32,218 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:33,485 INFO L93 Difference]: Finished difference Result 17279 states and 19683 transitions. [2024-11-19 18:31:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:33,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 337 [2024-11-19 18:31:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:33,499 INFO L225 Difference]: With dead ends: 17279 [2024-11-19 18:31:33,499 INFO L226 Difference]: Without dead ends: 9468 [2024-11-19 18:31:33,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:33,506 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 480 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:33,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 640 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:31:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2024-11-19 18:31:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 9038. [2024-11-19 18:31:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9038 states, 9037 states have (on average 1.1249308398804914) internal successors, (10166), 9037 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 10166 transitions. [2024-11-19 18:31:33,589 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 10166 transitions. Word has length 337 [2024-11-19 18:31:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:33,590 INFO L471 AbstractCegarLoop]: Abstraction has 9038 states and 10166 transitions. [2024-11-19 18:31:33,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 10166 transitions. [2024-11-19 18:31:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-19 18:31:33,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:33,596 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:33,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:31:33,596 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:33,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 488558404, now seen corresponding path program 1 times [2024-11-19 18:31:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:33,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61843378] [2024-11-19 18:31:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61843378] [2024-11-19 18:31:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61843378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:33,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:33,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:33,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515089898] [2024-11-19 18:31:33,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:33,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:33,837 INFO L87 Difference]: Start difference. First operand 9038 states and 10166 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:35,428 INFO L93 Difference]: Finished difference Result 23201 states and 26057 transitions. [2024-11-19 18:31:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:35,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 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 404 [2024-11-19 18:31:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:35,446 INFO L225 Difference]: With dead ends: 23201 [2024-11-19 18:31:35,446 INFO L226 Difference]: Without dead ends: 13740 [2024-11-19 18:31:35,455 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 [2024-11-19 18:31:35,455 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 586 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:35,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 179 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:31:35,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2024-11-19 18:31:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13737. [2024-11-19 18:31:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13737 states, 13736 states have (on average 1.1252912055911473) internal successors, (15457), 13736 states have internal predecessors, (15457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 15457 transitions. [2024-11-19 18:31:35,595 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 15457 transitions. Word has length 404 [2024-11-19 18:31:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:35,596 INFO L471 AbstractCegarLoop]: Abstraction has 13737 states and 15457 transitions. [2024-11-19 18:31:35,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 15457 transitions. [2024-11-19 18:31:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-19 18:31:35,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:35,603 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:31:35,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:31:35,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:35,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1240494826, now seen corresponding path program 1 times [2024-11-19 18:31:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:35,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695106864] [2024-11-19 18:31:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-19 18:31:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695106864] [2024-11-19 18:31:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695106864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498071568] [2024-11-19 18:31:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:35,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:35,746 INFO L87 Difference]: Start difference. First operand 13737 states and 15457 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:36,823 INFO L93 Difference]: Finished difference Result 30450 states and 34316 transitions. [2024-11-19 18:31:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:36,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 408 [2024-11-19 18:31:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:36,843 INFO L225 Difference]: With dead ends: 30450 [2024-11-19 18:31:36,844 INFO L226 Difference]: Without dead ends: 16715 [2024-11-19 18:31:36,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:36,856 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 419 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:36,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 288 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:31:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16715 states. [2024-11-19 18:31:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16715 to 15436. [2024-11-19 18:31:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15436 states, 15435 states have (on average 1.1231616456106253) internal successors, (17336), 15435 states have internal predecessors, (17336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15436 states to 15436 states and 17336 transitions. [2024-11-19 18:31:36,983 INFO L78 Accepts]: Start accepts. Automaton has 15436 states and 17336 transitions. Word has length 408 [2024-11-19 18:31:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:36,983 INFO L471 AbstractCegarLoop]: Abstraction has 15436 states and 17336 transitions. [2024-11-19 18:31:36,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 15436 states and 17336 transitions. [2024-11-19 18:31:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-11-19 18:31:37,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:37,002 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:37,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:31:37,002 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:37,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash 255466079, now seen corresponding path program 1 times [2024-11-19 18:31:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:37,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357550916] [2024-11-19 18:31:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 286 proven. 78 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:31:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357550916] [2024-11-19 18:31:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357550916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:31:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094424633] [2024-11-19 18:31:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:31:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:31:37,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:31:37,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:31:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:37,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:31:37,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:31:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 286 proven. 78 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:31:38,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:31:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:31:38,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094424633] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:31:38,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:31:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-19 18:31:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664274901] [2024-11-19 18:31:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:38,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:31:38,265 INFO L87 Difference]: Start difference. First operand 15436 states and 17336 transitions. Second operand has 4 states, 4 states have (on average 145.0) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:40,151 INFO L93 Difference]: Finished difference Result 41546 states and 46946 transitions. [2024-11-19 18:31:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 3 states have internal predecessors, (580), 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 642 [2024-11-19 18:31:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:40,177 INFO L225 Difference]: With dead ends: 41546 [2024-11-19 18:31:40,177 INFO L226 Difference]: Without dead ends: 26112 [2024-11-19 18:31:40,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1281 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:31:40,192 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 828 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:40,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 176 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 18:31:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26112 states. [2024-11-19 18:31:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26112 to 24405. [2024-11-19 18:31:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24405 states, 24404 states have (on average 1.1314538600229471) internal successors, (27612), 24404 states have internal predecessors, (27612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24405 states to 24405 states and 27612 transitions. [2024-11-19 18:31:40,518 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 27612 transitions. Word has length 642 [2024-11-19 18:31:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:40,518 INFO L471 AbstractCegarLoop]: Abstraction has 24405 states and 27612 transitions. [2024-11-19 18:31:40,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 27612 transitions. [2024-11-19 18:31:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-11-19 18:31:40,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:40,538 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:40,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:31:40,738 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 [2024-11-19 18:31:40,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:40,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash 448966583, now seen corresponding path program 1 times [2024-11-19 18:31:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:40,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665053476] [2024-11-19 18:31:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:31:41,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665053476] [2024-11-19 18:31:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665053476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:41,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:41,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695409642] [2024-11-19 18:31:41,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:41,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:41,164 INFO L87 Difference]: Start difference. First operand 24405 states and 27612 transitions. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:42,473 INFO L93 Difference]: Finished difference Result 55626 states and 63147 transitions. [2024-11-19 18:31:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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 668 [2024-11-19 18:31:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:42,506 INFO L225 Difference]: With dead ends: 55626 [2024-11-19 18:31:42,506 INFO L226 Difference]: Without dead ends: 30791 [2024-11-19 18:31:42,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:42,526 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 100 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:42,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 611 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:31:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30791 states. [2024-11-19 18:31:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30791 to 29935. [2024-11-19 18:31:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29935 states, 29934 states have (on average 1.1269459477517205) internal successors, (33734), 29934 states have internal predecessors, (33734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29935 states to 29935 states and 33734 transitions. [2024-11-19 18:31:42,891 INFO L78 Accepts]: Start accepts. Automaton has 29935 states and 33734 transitions. Word has length 668 [2024-11-19 18:31:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:42,892 INFO L471 AbstractCegarLoop]: Abstraction has 29935 states and 33734 transitions. [2024-11-19 18:31:42,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 29935 states and 33734 transitions. [2024-11-19 18:31:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2024-11-19 18:31:42,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:42,911 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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] [2024-11-19 18:31:42,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:31:42,911 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:42,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2104954898, now seen corresponding path program 1 times [2024-11-19 18:31:42,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249579332] [2024-11-19 18:31:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-19 18:31:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249579332] [2024-11-19 18:31:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249579332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:43,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:43,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476435328] [2024-11-19 18:31:43,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:43,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:43,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:43,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:43,122 INFO L87 Difference]: Start difference. First operand 29935 states and 33734 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:44,246 INFO L93 Difference]: Finished difference Result 65824 states and 74204 transitions. [2024-11-19 18:31:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 709 [2024-11-19 18:31:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:44,283 INFO L225 Difference]: With dead ends: 65824 [2024-11-19 18:31:44,283 INFO L226 Difference]: Without dead ends: 35891 [2024-11-19 18:31:44,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:44,306 INFO L432 NwaCegarLoop]: 629 mSDtfsCounter, 488 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:44,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 671 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:31:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35891 states. [2024-11-19 18:31:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35891 to 35887. [2024-11-19 18:31:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35887 states, 35886 states have (on average 1.1147801371008192) internal successors, (40005), 35886 states have internal predecessors, (40005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35887 states to 35887 states and 40005 transitions. [2024-11-19 18:31:44,693 INFO L78 Accepts]: Start accepts. Automaton has 35887 states and 40005 transitions. Word has length 709 [2024-11-19 18:31:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:44,693 INFO L471 AbstractCegarLoop]: Abstraction has 35887 states and 40005 transitions. [2024-11-19 18:31:44,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 35887 states and 40005 transitions. [2024-11-19 18:31:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-19 18:31:44,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:44,714 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:44,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:31:44,714 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:44,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash -865502091, now seen corresponding path program 1 times [2024-11-19 18:31:44,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:44,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68003631] [2024-11-19 18:31:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 762 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:31:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68003631] [2024-11-19 18:31:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68003631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:45,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:45,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:31:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139305910] [2024-11-19 18:31:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:45,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:45,425 INFO L87 Difference]: Start difference. First operand 35887 states and 40005 transitions. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:47,509 INFO L93 Difference]: Finished difference Result 97358 states and 108372 transitions. [2024-11-19 18:31:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 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 788 [2024-11-19 18:31:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:47,571 INFO L225 Difference]: With dead ends: 97358 [2024-11-19 18:31:47,571 INFO L226 Difference]: Without dead ends: 61473 [2024-11-19 18:31:47,604 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 [2024-11-19 18:31:47,604 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 757 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:47,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 190 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 18:31:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61473 states. [2024-11-19 18:31:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61473 to 58913. [2024-11-19 18:31:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58913 states, 58912 states have (on average 1.1089421510048887) internal successors, (65330), 58912 states have internal predecessors, (65330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58913 states to 58913 states and 65330 transitions. [2024-11-19 18:31:48,359 INFO L78 Accepts]: Start accepts. Automaton has 58913 states and 65330 transitions. Word has length 788 [2024-11-19 18:31:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:48,360 INFO L471 AbstractCegarLoop]: Abstraction has 58913 states and 65330 transitions. [2024-11-19 18:31:48,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 58913 states and 65330 transitions. [2024-11-19 18:31:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2024-11-19 18:31:48,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:48,386 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:31:48,386 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:48,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 285592111, now seen corresponding path program 1 times [2024-11-19 18:31:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042774076] [2024-11-19 18:31:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-19 18:31:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042774076] [2024-11-19 18:31:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042774076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116202638] [2024-11-19 18:31:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:48,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:48,686 INFO L87 Difference]: Start difference. First operand 58913 states and 65330 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:49,392 INFO L93 Difference]: Finished difference Result 116961 states and 129596 transitions. [2024-11-19 18:31:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 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 819 [2024-11-19 18:31:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:49,448 INFO L225 Difference]: With dead ends: 116961 [2024-11-19 18:31:49,448 INFO L226 Difference]: Without dead ends: 58049 [2024-11-19 18:31:49,487 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 [2024-11-19 18:31:49,487 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 591 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:49,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 91 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:31:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58049 states. [2024-11-19 18:31:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58049 to 58048. [2024-11-19 18:31:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58048 states, 58047 states have (on average 1.1067927713749204) internal successors, (64246), 58047 states have internal predecessors, (64246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58048 states to 58048 states and 64246 transitions. [2024-11-19 18:31:50,305 INFO L78 Accepts]: Start accepts. Automaton has 58048 states and 64246 transitions. Word has length 819 [2024-11-19 18:31:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 58048 states and 64246 transitions. [2024-11-19 18:31:50,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 58048 states and 64246 transitions. [2024-11-19 18:31:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2024-11-19 18:31:50,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:50,360 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:50,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:31:50,361 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:50,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2037369336, now seen corresponding path program 1 times [2024-11-19 18:31:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820384347] [2024-11-19 18:31:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:50,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-11-19 18:31:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820384347] [2024-11-19 18:31:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820384347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:50,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398191011] [2024-11-19 18:31:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:50,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:50,808 INFO L87 Difference]: Start difference. First operand 58048 states and 64246 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:52,239 INFO L93 Difference]: Finished difference Result 140333 states and 155038 transitions. [2024-11-19 18:31:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 843 [2024-11-19 18:31:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:52,317 INFO L225 Difference]: With dead ends: 140333 [2024-11-19 18:31:52,317 INFO L226 Difference]: Without dead ends: 81861 [2024-11-19 18:31:52,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:52,344 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 470 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:52,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 228 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:31:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81861 states. [2024-11-19 18:31:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81861 to 79722. [2024-11-19 18:31:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79722 states, 79721 states have (on average 1.0953575594887168) internal successors, (87323), 79721 states have internal predecessors, (87323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79722 states to 79722 states and 87323 transitions. [2024-11-19 18:31:53,375 INFO L78 Accepts]: Start accepts. Automaton has 79722 states and 87323 transitions. Word has length 843 [2024-11-19 18:31:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:53,376 INFO L471 AbstractCegarLoop]: Abstraction has 79722 states and 87323 transitions. [2024-11-19 18:31:53,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 79722 states and 87323 transitions. [2024-11-19 18:31:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-19 18:31:53,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:53,433 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:53,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:31:53,433 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:53,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash -25124057, now seen corresponding path program 1 times [2024-11-19 18:31:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087121816] [2024-11-19 18:31:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-19 18:31:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087121816] [2024-11-19 18:31:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087121816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:31:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542765861] [2024-11-19 18:31:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:54,150 INFO L87 Difference]: Start difference. First operand 79722 states and 87323 transitions. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:56,090 INFO L93 Difference]: Finished difference Result 168808 states and 184636 transitions. [2024-11-19 18:31:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:56,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 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 859 [2024-11-19 18:31:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:56,171 INFO L225 Difference]: With dead ends: 168808 [2024-11-19 18:31:56,171 INFO L226 Difference]: Without dead ends: 89088 [2024-11-19 18:31:56,207 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 [2024-11-19 18:31:56,208 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 501 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:56,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 367 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:31:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89088 states. [2024-11-19 18:31:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89088 to 86957. [2024-11-19 18:31:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86957 states, 86956 states have (on average 1.0917130502783017) internal successors, (94931), 86956 states have internal predecessors, (94931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86957 states to 86957 states and 94931 transitions. [2024-11-19 18:31:57,229 INFO L78 Accepts]: Start accepts. Automaton has 86957 states and 94931 transitions. Word has length 859 [2024-11-19 18:31:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:57,230 INFO L471 AbstractCegarLoop]: Abstraction has 86957 states and 94931 transitions. [2024-11-19 18:31:57,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 86957 states and 94931 transitions. [2024-11-19 18:31:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-19 18:31:57,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:57,259 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:57,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:31:57,260 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:57,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:57,260 INFO L85 PathProgramCache]: Analyzing trace with hash 390148821, now seen corresponding path program 1 times [2024-11-19 18:31:57,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:57,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980172931] [2024-11-19 18:31:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:57,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-19 18:31:57,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980172931] [2024-11-19 18:31:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980172931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:57,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:57,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735676962] [2024-11-19 18:31:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:57,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:57,725 INFO L87 Difference]: Start difference. First operand 86957 states and 94931 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:59,090 INFO L93 Difference]: Finished difference Result 182422 states and 199074 transitions. [2024-11-19 18:31:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 860 [2024-11-19 18:31:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:59,180 INFO L225 Difference]: With dead ends: 182422 [2024-11-19 18:31:59,180 INFO L226 Difference]: Without dead ends: 95467 [2024-11-19 18:31:59,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:59,361 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 499 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:59,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 205 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:31:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95467 states. [2024-11-19 18:32:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95467 to 91207. [2024-11-19 18:32:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91207 states, 91206 states have (on average 1.084139201368331) internal successors, (98880), 91206 states have internal predecessors, (98880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91207 states to 91207 states and 98880 transitions. [2024-11-19 18:32:00,447 INFO L78 Accepts]: Start accepts. Automaton has 91207 states and 98880 transitions. Word has length 860 [2024-11-19 18:32:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:00,448 INFO L471 AbstractCegarLoop]: Abstraction has 91207 states and 98880 transitions. [2024-11-19 18:32:00,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 91207 states and 98880 transitions. [2024-11-19 18:32:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2024-11-19 18:32:00,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:00,480 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:00,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:32:00,480 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:00,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1874535863, now seen corresponding path program 1 times [2024-11-19 18:32:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929536763] [2024-11-19 18:32:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-19 18:32:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929536763] [2024-11-19 18:32:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929536763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:01,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:01,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:32:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572738420] [2024-11-19 18:32:01,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:01,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:01,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:01,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:01,408 INFO L87 Difference]: Start difference. First operand 91207 states and 98880 transitions. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:03,738 INFO L93 Difference]: Finished difference Result 213088 states and 230372 transitions. [2024-11-19 18:32:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:03,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 872 [2024-11-19 18:32:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:03,873 INFO L225 Difference]: With dead ends: 213088 [2024-11-19 18:32:03,874 INFO L226 Difference]: Without dead ends: 118480 [2024-11-19 18:32:03,938 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 [2024-11-19 18:32:03,938 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 656 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:03,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 181 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 18:32:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118480 states. [2024-11-19 18:32:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118480 to 81792. [2024-11-19 18:32:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81792 states, 81791 states have (on average 1.0795931092663007) internal successors, (88301), 81791 states have internal predecessors, (88301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81792 states to 81792 states and 88301 transitions. [2024-11-19 18:32:05,055 INFO L78 Accepts]: Start accepts. Automaton has 81792 states and 88301 transitions. Word has length 872 [2024-11-19 18:32:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:05,055 INFO L471 AbstractCegarLoop]: Abstraction has 81792 states and 88301 transitions. [2024-11-19 18:32:05,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 81792 states and 88301 transitions. [2024-11-19 18:32:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-19 18:32:05,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:05,351 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:05,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:32:05,351 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:05,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash 30094889, now seen corresponding path program 1 times [2024-11-19 18:32:05,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:05,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149777301] [2024-11-19 18:32:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:05,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 1075 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-19 18:32:05,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:05,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149777301] [2024-11-19 18:32:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149777301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:05,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:05,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:32:05,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370853347] [2024-11-19 18:32:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:05,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:05,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:05,963 INFO L87 Difference]: Start difference. First operand 81792 states and 88301 transitions. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:08,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:08,051 INFO L93 Difference]: Finished difference Result 171247 states and 184868 transitions. [2024-11-19 18:32:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:08,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 890 [2024-11-19 18:32:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:08,141 INFO L225 Difference]: With dead ends: 171247 [2024-11-19 18:32:08,141 INFO L226 Difference]: Without dead ends: 89457 [2024-11-19 18:32:08,155 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 [2024-11-19 18:32:08,156 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 454 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:08,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 144 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:32:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89457 states. [2024-11-19 18:32:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89457 to 80942. [2024-11-19 18:32:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80942 states, 80941 states have (on average 1.0752029255877738) internal successors, (87028), 80941 states have internal predecessors, (87028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80942 states to 80942 states and 87028 transitions. [2024-11-19 18:32:09,052 INFO L78 Accepts]: Start accepts. Automaton has 80942 states and 87028 transitions. Word has length 890 [2024-11-19 18:32:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:09,053 INFO L471 AbstractCegarLoop]: Abstraction has 80942 states and 87028 transitions. [2024-11-19 18:32:09,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 80942 states and 87028 transitions. [2024-11-19 18:32:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2024-11-19 18:32:09,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:09,101 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:09,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:32:09,101 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:09,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1783607746, now seen corresponding path program 1 times [2024-11-19 18:32:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360290178] [2024-11-19 18:32:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:32:10,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360290178] [2024-11-19 18:32:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360290178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:10,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 18:32:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508180352] [2024-11-19 18:32:10,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:10,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 18:32:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 18:32:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:32:10,713 INFO L87 Difference]: Start difference. First operand 80942 states and 87028 transitions. Second operand has 7 states, 7 states have (on average 120.14285714285714) internal successors, (841), 6 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:14,359 INFO L93 Difference]: Finished difference Result 187597 states and 200940 transitions. [2024-11-19 18:32:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 18:32:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 120.14285714285714) internal successors, (841), 6 states have internal predecessors, (841), 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 922 [2024-11-19 18:32:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:14,463 INFO L225 Difference]: With dead ends: 187597 [2024-11-19 18:32:14,464 INFO L226 Difference]: Without dead ends: 106657 [2024-11-19 18:32:14,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-19 18:32:14,514 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1999 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 6385 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 6385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:14,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 237 Invalid, 7152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 6385 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-19 18:32:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106657 states. [2024-11-19 18:32:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106657 to 81367. [2024-11-19 18:32:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81367 states, 81366 states have (on average 1.0746749256446182) internal successors, (87442), 81366 states have internal predecessors, (87442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81367 states to 81367 states and 87442 transitions. [2024-11-19 18:32:15,618 INFO L78 Accepts]: Start accepts. Automaton has 81367 states and 87442 transitions. Word has length 922 [2024-11-19 18:32:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:15,619 INFO L471 AbstractCegarLoop]: Abstraction has 81367 states and 87442 transitions. [2024-11-19 18:32:15,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.14285714285714) internal successors, (841), 6 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 81367 states and 87442 transitions. [2024-11-19 18:32:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2024-11-19 18:32:15,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:15,653 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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] [2024-11-19 18:32:15,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 18:32:15,653 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:15,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1135250746, now seen corresponding path program 1 times [2024-11-19 18:32:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650627056] [2024-11-19 18:32:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:15,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-19 18:32:16,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650627056] [2024-11-19 18:32:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650627056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:16,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:16,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637697205] [2024-11-19 18:32:16,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:16,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:16,283 INFO L87 Difference]: Start difference. First operand 81367 states and 87442 transitions. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:17,578 INFO L93 Difference]: Finished difference Result 159748 states and 171585 transitions. [2024-11-19 18:32:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 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 948 [2024-11-19 18:32:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:17,657 INFO L225 Difference]: With dead ends: 159748 [2024-11-19 18:32:17,658 INFO L226 Difference]: Without dead ends: 78381 [2024-11-19 18:32:17,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:17,714 INFO L432 NwaCegarLoop]: 619 mSDtfsCounter, 106 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:17,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 668 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:32:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78381 states. [2024-11-19 18:32:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78381 to 75826. [2024-11-19 18:32:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75826 states, 75825 states have (on average 1.0614704912627762) internal successors, (80486), 75825 states have internal predecessors, (80486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75826 states to 75826 states and 80486 transitions. [2024-11-19 18:32:18,556 INFO L78 Accepts]: Start accepts. Automaton has 75826 states and 80486 transitions. Word has length 948 [2024-11-19 18:32:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:18,557 INFO L471 AbstractCegarLoop]: Abstraction has 75826 states and 80486 transitions. [2024-11-19 18:32:18,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 75826 states and 80486 transitions. [2024-11-19 18:32:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2024-11-19 18:32:18,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:18,590 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:18,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 18:32:18,591 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:18,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1571419451, now seen corresponding path program 1 times [2024-11-19 18:32:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305654768] [2024-11-19 18:32:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:18,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 985 proven. 289 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:32:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305654768] [2024-11-19 18:32:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305654768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:32:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314249967] [2024-11-19 18:32:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:20,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:32:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:32:20,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:32:20,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:32:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:20,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 18:32:20,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:32:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 1051 proven. 223 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:32:21,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:32:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 1067 proven. 207 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-19 18:32:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314249967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:32:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:32:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-19 18:32:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314685334] [2024-11-19 18:32:23,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:32:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 18:32:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 18:32:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-19 18:32:23,070 INFO L87 Difference]: Start difference. First operand 75826 states and 80486 transitions. Second operand has 16 states, 16 states have (on average 97.5625) internal successors, (1561), 16 states have internal predecessors, (1561), 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)