./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash af054c56b53dbaf47c2e77c7a9f5399ddfc0be2b5a01fef7ec50c2cea18d4aa8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 22:05:44,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 22:05:44,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 22:05:44,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 22:05:44,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 22:05:44,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 22:05:44,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 22:05:44,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 22:05:44,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 22:05:44,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 22:05:44,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 22:05:44,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 22:05:44,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 22:05:44,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 22:05:44,189 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 22:05:44,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 22:05:44,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 22:05:44,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 22:05:44,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 22:05:44,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 22:05:44,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 22:05:44,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 22:05:44,194 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 22:05:44,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 22:05:44,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 22:05:44,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 22:05:44,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 22:05:44,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 22:05:44,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 22:05:44,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:05:44,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 22:05:44,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 22:05:44,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 22:05:44,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 22:05:44,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af054c56b53dbaf47c2e77c7a9f5399ddfc0be2b5a01fef7ec50c2cea18d4aa8 [2024-10-12 22:05:44,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 22:05:44,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 22:05:44,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 22:05:44,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 22:05:44,426 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 22:05:44,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c [2024-10-12 22:05:45,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 22:05:46,218 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 22:05:46,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c [2024-10-12 22:05:46,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1a838e1/bda64103c6af48bc89f7eb31459036c3/FLAG7d0b18dd2 [2024-10-12 22:05:46,251 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1a838e1/bda64103c6af48bc89f7eb31459036c3 [2024-10-12 22:05:46,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 22:05:46,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 22:05:46,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 22:05:46,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 22:05:46,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 22:05:46,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:46,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7574728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46, skipping insertion in model container [2024-10-12 22:05:46,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:46,347 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 22:05:46,501 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c[1173,1186] [2024-10-12 22:05:46,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:05:46,769 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 22:05:46,778 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.2.prop1-func-interl.c[1173,1186] [2024-10-12 22:05:46,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:05:46,985 INFO L204 MainTranslator]: Completed translation [2024-10-12 22:05:46,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46 WrapperNode [2024-10-12 22:05:46,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 22:05:46,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 22:05:46,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 22:05:46,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 22:05:46,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:47,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,031 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5801 [2024-10-12 22:05:48,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 22:05:48,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 22:05:48,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 22:05:48,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 22:05:48,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,266 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 22:05:48,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 22:05:48,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 22:05:48,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 22:05:48,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 22:05:48,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (1/1) ... [2024-10-12 22:05:48,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:05:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:05:48,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 22:05:48,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 22:05:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 22:05:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 22:05:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 22:05:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 22:05:49,351 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 22:05:49,352 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 22:05:53,374 INFO L? ?]: Removed 3416 outVars from TransFormulas that were not future-live. [2024-10-12 22:05:53,374 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 22:05:53,465 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 22:05:53,465 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 22:05:53,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:05:53 BoogieIcfgContainer [2024-10-12 22:05:53,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 22:05:53,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 22:05:53,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 22:05:53,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 22:05:53,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:05:46" (1/3) ... [2024-10-12 22:05:53,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180c9829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:05:53, skipping insertion in model container [2024-10-12 22:05:53,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:05:46" (2/3) ... [2024-10-12 22:05:53,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180c9829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:05:53, skipping insertion in model container [2024-10-12 22:05:53,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:05:53" (3/3) ... [2024-10-12 22:05:53,473 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.blocks.2.prop1-func-interl.c [2024-10-12 22:05:53,486 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 22:05:53,486 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 22:05:53,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 22:05:53,640 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;@787823b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 22:05:53,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 22:05:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 1891 states, 1889 states have (on average 1.5044997353096876) internal successors, (2842), 1890 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-12 22:05:53,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:05:53,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:05:53,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:05:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:05:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2006108583, now seen corresponding path program 1 times [2024-10-12 22:05:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:05:53,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157905482] [2024-10-12 22:05:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:05:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:05:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:05:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:05:54,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:05:54,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157905482] [2024-10-12 22:05:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157905482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:05:54,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:05:54,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:05:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045429112] [2024-10-12 22:05:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:05:54,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:05:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:05:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:05:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:05:54,344 INFO L87 Difference]: Start difference. First operand has 1891 states, 1889 states have (on average 1.5044997353096876) internal successors, (2842), 1890 states have internal predecessors, (2842), 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 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:05:56,660 INFO L93 Difference]: Finished difference Result 5521 states and 8302 transitions. [2024-10-12 22:05:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:05:56,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2024-10-12 22:05:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:05:56,686 INFO L225 Difference]: With dead ends: 5521 [2024-10-12 22:05:56,686 INFO L226 Difference]: Without dead ends: 3699 [2024-10-12 22:05:56,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:05:56,695 INFO L432 NwaCegarLoop]: 2023 mSDtfsCounter, 2748 mSDsluCounter, 5944 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2748 SdHoareTripleChecker+Valid, 7967 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:05:56,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2748 Valid, 7967 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 22:05:56,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2024-10-12 22:05:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 1969. [2024-10-12 22:05:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.502540650406504) internal successors, (2957), 1968 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2957 transitions. [2024-10-12 22:05:56,781 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2957 transitions. Word has length 82 [2024-10-12 22:05:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:05:56,782 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2957 transitions. [2024-10-12 22:05:56,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2957 transitions. [2024-10-12 22:05:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 22:05:56,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:05:56,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:05:56,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 22:05:56,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:05:56,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:05:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2143013366, now seen corresponding path program 1 times [2024-10-12 22:05:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:05:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767448536] [2024-10-12 22:05:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:05:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:05:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:05:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:05:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:05:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767448536] [2024-10-12 22:05:56,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767448536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:05:56,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:05:56,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:05:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533344568] [2024-10-12 22:05:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:05:56,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:05:56,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:05:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:05:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:05:56,989 INFO L87 Difference]: Start difference. First operand 1969 states and 2957 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:05:57,046 INFO L93 Difference]: Finished difference Result 1973 states and 2961 transitions. [2024-10-12 22:05:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:05:57,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 84 [2024-10-12 22:05:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:05:57,056 INFO L225 Difference]: With dead ends: 1973 [2024-10-12 22:05:57,056 INFO L226 Difference]: Without dead ends: 1971 [2024-10-12 22:05:57,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:05:57,061 INFO L432 NwaCegarLoop]: 2837 mSDtfsCounter, 0 mSDsluCounter, 5669 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8506 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:05:57,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8506 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:05:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2024-10-12 22:05:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1971. [2024-10-12 22:05:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1970 states have (on average 1.5020304568527918) internal successors, (2959), 1970 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2959 transitions. [2024-10-12 22:05:57,100 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2959 transitions. Word has length 84 [2024-10-12 22:05:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:05:57,103 INFO L471 AbstractCegarLoop]: Abstraction has 1971 states and 2959 transitions. [2024-10-12 22:05:57,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2959 transitions. [2024-10-12 22:05:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 22:05:57,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:05:57,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:05:57,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 22:05:57,108 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:05:57,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:05:57,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2010600566, now seen corresponding path program 1 times [2024-10-12 22:05:57,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:05:57,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937451029] [2024-10-12 22:05:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:05:57,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:05:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:05:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:05:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:05:57,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937451029] [2024-10-12 22:05:57,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937451029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:05:57,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:05:57,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:05:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687232429] [2024-10-12 22:05:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:05:57,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:05:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:05:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:05:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:05:57,269 INFO L87 Difference]: Start difference. First operand 1971 states and 2959 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:05:57,331 INFO L93 Difference]: Finished difference Result 3796 states and 5701 transitions. [2024-10-12 22:05:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:05:57,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2024-10-12 22:05:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:05:57,337 INFO L225 Difference]: With dead ends: 3796 [2024-10-12 22:05:57,338 INFO L226 Difference]: Without dead ends: 1973 [2024-10-12 22:05:57,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:05:57,341 INFO L432 NwaCegarLoop]: 2837 mSDtfsCounter, 0 mSDsluCounter, 5666 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:05:57,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:05:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2024-10-12 22:05:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1973. [2024-10-12 22:05:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 1.5015212981744421) internal successors, (2961), 1972 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2961 transitions. [2024-10-12 22:05:57,378 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2961 transitions. Word has length 85 [2024-10-12 22:05:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:05:57,378 INFO L471 AbstractCegarLoop]: Abstraction has 1973 states and 2961 transitions. [2024-10-12 22:05:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2961 transitions. [2024-10-12 22:05:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 22:05:57,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:05:57,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:05:57,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 22:05:57,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:05:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:05:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1101109967, now seen corresponding path program 1 times [2024-10-12 22:05:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:05:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610553580] [2024-10-12 22:05:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:05:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:05:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:05:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:05:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:05:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610553580] [2024-10-12 22:05:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610553580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:05:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:05:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:05:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883944854] [2024-10-12 22:05:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:05:57,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:05:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:05:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:05:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:05:57,594 INFO L87 Difference]: Start difference. First operand 1973 states and 2961 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:05:57,675 INFO L93 Difference]: Finished difference Result 5474 states and 8221 transitions. [2024-10-12 22:05:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:05:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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 86 [2024-10-12 22:05:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:05:57,685 INFO L225 Difference]: With dead ends: 5474 [2024-10-12 22:05:57,685 INFO L226 Difference]: Without dead ends: 3649 [2024-10-12 22:05:57,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:05:57,689 INFO L432 NwaCegarLoop]: 2833 mSDtfsCounter, 2664 mSDsluCounter, 8393 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 11226 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:05:57,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 11226 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:05:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2024-10-12 22:05:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1976. [2024-10-12 22:05:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.5007594936708861) internal successors, (2964), 1975 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2964 transitions. [2024-10-12 22:05:57,719 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2964 transitions. Word has length 86 [2024-10-12 22:05:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:05:57,720 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2964 transitions. [2024-10-12 22:05:57,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:05:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2964 transitions. [2024-10-12 22:05:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2024-10-12 22:05:57,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:05:57,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:05:57,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 22:05:57,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:05:57,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:05:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1230155420, now seen corresponding path program 1 times [2024-10-12 22:05:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:05:57,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165190823] [2024-10-12 22:05:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:05:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:05:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165190823] [2024-10-12 22:06:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165190823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277848755] [2024-10-12 22:06:00,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:00,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:00,136 INFO L87 Difference]: Start difference. First operand 1976 states and 2964 transitions. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:00,219 INFO L93 Difference]: Finished difference Result 3801 states and 5705 transitions. [2024-10-12 22:06:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 3 states have internal predecessors, (989), 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 989 [2024-10-12 22:06:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:00,226 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:00,227 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:00,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:00,231 INFO L432 NwaCegarLoop]: 2831 mSDtfsCounter, 2759 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:00,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2759 Valid, 5660 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.5002531645569621) internal successors, (2963), 1975 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2963 transitions. [2024-10-12 22:06:00,375 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2963 transitions. Word has length 989 [2024-10-12 22:06:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:00,376 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2963 transitions. [2024-10-12 22:06:00,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2963 transitions. [2024-10-12 22:06:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2024-10-12 22:06:00,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:00,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:00,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 22:06:00,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:00,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 950076029, now seen corresponding path program 1 times [2024-10-12 22:06:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645942498] [2024-10-12 22:06:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645942498] [2024-10-12 22:06:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645942498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398921580] [2024-10-12 22:06:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:02,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:02,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:02,356 INFO L87 Difference]: Start difference. First operand 1976 states and 2963 transitions. Second operand has 4 states, 4 states have (on average 247.5) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:02,463 INFO L93 Difference]: Finished difference Result 3801 states and 5703 transitions. [2024-10-12 22:06:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:02,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.5) internal successors, (990), 3 states have internal predecessors, (990), 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 990 [2024-10-12 22:06:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:02,469 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:02,469 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:02,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:02,472 INFO L432 NwaCegarLoop]: 2818 mSDtfsCounter, 2725 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:02,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 5634 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4997468354430379) internal successors, (2962), 1975 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2962 transitions. [2024-10-12 22:06:02,499 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2962 transitions. Word has length 990 [2024-10-12 22:06:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:02,499 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2962 transitions. [2024-10-12 22:06:02,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.5) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2962 transitions. [2024-10-12 22:06:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2024-10-12 22:06:02,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:02,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:02,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 22:06:02,518 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:02,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 251964977, now seen corresponding path program 1 times [2024-10-12 22:06:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003896464] [2024-10-12 22:06:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003896464] [2024-10-12 22:06:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003896464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:04,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700379593] [2024-10-12 22:06:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:04,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:04,451 INFO L87 Difference]: Start difference. First operand 1976 states and 2962 transitions. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:04,568 INFO L93 Difference]: Finished difference Result 3801 states and 5701 transitions. [2024-10-12 22:06:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 3 states have internal predecessors, (991), 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 991 [2024-10-12 22:06:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:04,576 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:04,576 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:04,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:04,580 INFO L432 NwaCegarLoop]: 2817 mSDtfsCounter, 2719 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:04,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 5632 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4992405063291139) internal successors, (2961), 1975 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2961 transitions. [2024-10-12 22:06:04,613 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2961 transitions. Word has length 991 [2024-10-12 22:06:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:04,614 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2961 transitions. [2024-10-12 22:06:04,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2961 transitions. [2024-10-12 22:06:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2024-10-12 22:06:04,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:04,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:04,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 22:06:04,648 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:04,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 486944912, now seen corresponding path program 1 times [2024-10-12 22:06:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:04,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378896850] [2024-10-12 22:06:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:04,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:06,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378896850] [2024-10-12 22:06:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378896850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:06,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:06,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927680577] [2024-10-12 22:06:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:06,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:06,222 INFO L87 Difference]: Start difference. First operand 1976 states and 2961 transitions. Second operand has 4 states, 4 states have (on average 248.0) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:06,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:06,302 INFO L93 Difference]: Finished difference Result 3801 states and 5699 transitions. [2024-10-12 22:06:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:06,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.0) internal successors, (992), 3 states have internal predecessors, (992), 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 992 [2024-10-12 22:06:06,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:06,308 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:06,308 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:06,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:06,311 INFO L432 NwaCegarLoop]: 2816 mSDtfsCounter, 2687 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:06,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 5630 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4987341772151899) internal successors, (2960), 1975 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2960 transitions. [2024-10-12 22:06:06,347 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2960 transitions. Word has length 992 [2024-10-12 22:06:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:06,347 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2960 transitions. [2024-10-12 22:06:06,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.0) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2960 transitions. [2024-10-12 22:06:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2024-10-12 22:06:06,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:06,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:06,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 22:06:06,356 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:06,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 938568927, now seen corresponding path program 1 times [2024-10-12 22:06:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360764806] [2024-10-12 22:06:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:08,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:08,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360764806] [2024-10-12 22:06:08,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360764806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:08,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:08,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:08,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527529359] [2024-10-12 22:06:08,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:08,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:08,633 INFO L87 Difference]: Start difference. First operand 1976 states and 2960 transitions. Second operand has 4 states, 4 states have (on average 248.25) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:08,793 INFO L93 Difference]: Finished difference Result 3801 states and 5697 transitions. [2024-10-12 22:06:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 3 states have internal predecessors, (993), 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 993 [2024-10-12 22:06:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:08,806 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:08,810 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:08,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:08,814 INFO L432 NwaCegarLoop]: 2815 mSDtfsCounter, 2681 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:08,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2681 Valid, 5628 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4982278481012659) internal successors, (2959), 1975 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2959 transitions. [2024-10-12 22:06:08,846 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2959 transitions. Word has length 993 [2024-10-12 22:06:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:08,847 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2959 transitions. [2024-10-12 22:06:08,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2959 transitions. [2024-10-12 22:06:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2024-10-12 22:06:08,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:08,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:08,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 22:06:08,861 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:08,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 607798979, now seen corresponding path program 1 times [2024-10-12 22:06:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778994471] [2024-10-12 22:06:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778994471] [2024-10-12 22:06:10,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778994471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:10,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:10,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010139377] [2024-10-12 22:06:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:10,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:10,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:10,339 INFO L87 Difference]: Start difference. First operand 1976 states and 2959 transitions. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:10,412 INFO L93 Difference]: Finished difference Result 3801 states and 5695 transitions. [2024-10-12 22:06:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 3 states have internal predecessors, (994), 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 994 [2024-10-12 22:06:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:10,419 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:10,419 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:10,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:10,421 INFO L432 NwaCegarLoop]: 2814 mSDtfsCounter, 2649 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:10,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2649 Valid, 5626 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4977215189873418) internal successors, (2958), 1975 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2958 transitions. [2024-10-12 22:06:10,446 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2958 transitions. Word has length 994 [2024-10-12 22:06:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:10,446 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2958 transitions. [2024-10-12 22:06:10,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2958 transitions. [2024-10-12 22:06:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-10-12 22:06:10,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:10,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:10,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 22:06:10,455 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:10,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash -467652691, now seen corresponding path program 1 times [2024-10-12 22:06:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:10,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874679331] [2024-10-12 22:06:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:10,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874679331] [2024-10-12 22:06:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874679331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:12,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:12,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:12,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491082912] [2024-10-12 22:06:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:12,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:12,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:12,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:12,043 INFO L87 Difference]: Start difference. First operand 1976 states and 2958 transitions. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:12,117 INFO L93 Difference]: Finished difference Result 3801 states and 5693 transitions. [2024-10-12 22:06:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 3 states have internal predecessors, (995), 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 995 [2024-10-12 22:06:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:12,122 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:12,122 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:12,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:12,125 INFO L432 NwaCegarLoop]: 2813 mSDtfsCounter, 2643 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:12,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 5624 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4972151898734176) internal successors, (2957), 1975 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2957 transitions. [2024-10-12 22:06:12,145 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2957 transitions. Word has length 995 [2024-10-12 22:06:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:12,146 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2957 transitions. [2024-10-12 22:06:12,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2957 transitions. [2024-10-12 22:06:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2024-10-12 22:06:12,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:12,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:12,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 22:06:12,153 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:12,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1251079446, now seen corresponding path program 1 times [2024-10-12 22:06:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252441978] [2024-10-12 22:06:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:13,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252441978] [2024-10-12 22:06:13,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252441978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:13,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:13,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:13,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433402020] [2024-10-12 22:06:13,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:13,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:13,519 INFO L87 Difference]: Start difference. First operand 1976 states and 2957 transitions. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:13,656 INFO L93 Difference]: Finished difference Result 3801 states and 5691 transitions. [2024-10-12 22:06:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 3 states have internal predecessors, (996), 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 996 [2024-10-12 22:06:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:13,662 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:13,662 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:13,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:13,664 INFO L432 NwaCegarLoop]: 2793 mSDtfsCounter, 2581 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:13,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 5584 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4967088607594936) internal successors, (2956), 1975 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2956 transitions. [2024-10-12 22:06:13,687 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2956 transitions. Word has length 996 [2024-10-12 22:06:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:13,687 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2956 transitions. [2024-10-12 22:06:13,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2956 transitions. [2024-10-12 22:06:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2024-10-12 22:06:13,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:13,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:13,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 22:06:13,695 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:13,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 599071268, now seen corresponding path program 1 times [2024-10-12 22:06:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:13,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651478716] [2024-10-12 22:06:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:13,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:15,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651478716] [2024-10-12 22:06:15,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651478716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127864516] [2024-10-12 22:06:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:15,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:15,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:15,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:15,685 INFO L87 Difference]: Start difference. First operand 1976 states and 2956 transitions. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:15,823 INFO L93 Difference]: Finished difference Result 3801 states and 5689 transitions. [2024-10-12 22:06:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:15,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 3 states have internal predecessors, (997), 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 997 [2024-10-12 22:06:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:15,826 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:15,826 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:15,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:15,828 INFO L432 NwaCegarLoop]: 2792 mSDtfsCounter, 2575 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:15,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2575 Valid, 5582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4962025316455696) internal successors, (2955), 1975 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2955 transitions. [2024-10-12 22:06:15,847 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2955 transitions. Word has length 997 [2024-10-12 22:06:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:15,847 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2955 transitions. [2024-10-12 22:06:15,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2955 transitions. [2024-10-12 22:06:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2024-10-12 22:06:15,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:15,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:15,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 22:06:15,854 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:15,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash -853327895, now seen corresponding path program 1 times [2024-10-12 22:06:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759897514] [2024-10-12 22:06:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:17,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:17,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759897514] [2024-10-12 22:06:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759897514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:17,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:17,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:17,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900318643] [2024-10-12 22:06:17,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:17,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:17,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:17,315 INFO L87 Difference]: Start difference. First operand 1976 states and 2955 transitions. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:17,446 INFO L93 Difference]: Finished difference Result 3801 states and 5687 transitions. [2024-10-12 22:06:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:17,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 3 states have internal predecessors, (998), 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 998 [2024-10-12 22:06:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:17,450 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:17,450 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:17,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:17,452 INFO L432 NwaCegarLoop]: 2810 mSDtfsCounter, 2543 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:17,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 5618 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4956962025316456) internal successors, (2954), 1975 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2954 transitions. [2024-10-12 22:06:17,470 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2954 transitions. Word has length 998 [2024-10-12 22:06:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:17,470 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2954 transitions. [2024-10-12 22:06:17,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2954 transitions. [2024-10-12 22:06:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2024-10-12 22:06:17,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:17,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:17,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 22:06:17,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:17,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -50938734, now seen corresponding path program 1 times [2024-10-12 22:06:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:17,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846565845] [2024-10-12 22:06:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:19,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846565845] [2024-10-12 22:06:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846565845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:19,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:19,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156335726] [2024-10-12 22:06:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:19,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:19,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:19,093 INFO L87 Difference]: Start difference. First operand 1976 states and 2954 transitions. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:19,162 INFO L93 Difference]: Finished difference Result 3801 states and 5685 transitions. [2024-10-12 22:06:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:19,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 3 states have internal predecessors, (999), 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 999 [2024-10-12 22:06:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:19,169 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:19,169 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:19,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:19,171 INFO L432 NwaCegarLoop]: 2809 mSDtfsCounter, 2537 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 5616 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:19,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 5616 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4951898734177216) internal successors, (2953), 1975 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2953 transitions. [2024-10-12 22:06:19,201 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2953 transitions. Word has length 999 [2024-10-12 22:06:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:19,202 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2953 transitions. [2024-10-12 22:06:19,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2953 transitions. [2024-10-12 22:06:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2024-10-12 22:06:19,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:19,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:19,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 22:06:19,212 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:19,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1389408988, now seen corresponding path program 1 times [2024-10-12 22:06:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133763240] [2024-10-12 22:06:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133763240] [2024-10-12 22:06:20,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133763240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650614288] [2024-10-12 22:06:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:20,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:20,529 INFO L87 Difference]: Start difference. First operand 1976 states and 2953 transitions. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:20,658 INFO L93 Difference]: Finished difference Result 3801 states and 5683 transitions. [2024-10-12 22:06:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1000 [2024-10-12 22:06:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:20,662 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:20,662 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:20,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:20,664 INFO L432 NwaCegarLoop]: 2789 mSDtfsCounter, 2447 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 5576 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:20,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 5576 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:20,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4946835443037976) internal successors, (2952), 1975 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2952 transitions. [2024-10-12 22:06:20,680 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2952 transitions. Word has length 1000 [2024-10-12 22:06:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:20,680 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2952 transitions. [2024-10-12 22:06:20,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2952 transitions. [2024-10-12 22:06:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2024-10-12 22:06:20,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:20,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:20,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 22:06:20,687 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:20,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1336486219, now seen corresponding path program 1 times [2024-10-12 22:06:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406358720] [2024-10-12 22:06:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:22,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406358720] [2024-10-12 22:06:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406358720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141438842] [2024-10-12 22:06:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:22,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:22,274 INFO L87 Difference]: Start difference. First operand 1976 states and 2952 transitions. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:22,507 INFO L93 Difference]: Finished difference Result 3801 states and 5681 transitions. [2024-10-12 22:06:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 3 states have internal predecessors, (1001), 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 1001 [2024-10-12 22:06:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:22,510 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:22,510 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:22,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:22,511 INFO L432 NwaCegarLoop]: 2788 mSDtfsCounter, 2441 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5574 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:22,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 5574 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4941772151898733) internal successors, (2951), 1975 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2951 transitions. [2024-10-12 22:06:22,527 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2951 transitions. Word has length 1001 [2024-10-12 22:06:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:22,528 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2951 transitions. [2024-10-12 22:06:22,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2951 transitions. [2024-10-12 22:06:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2024-10-12 22:06:22,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:22,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:22,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 22:06:22,535 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:22,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1788764431, now seen corresponding path program 1 times [2024-10-12 22:06:22,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:22,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708469353] [2024-10-12 22:06:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:22,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:23,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:23,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708469353] [2024-10-12 22:06:23,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708469353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:23,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:23,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:23,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316642671] [2024-10-12 22:06:23,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:23,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:23,900 INFO L87 Difference]: Start difference. First operand 1976 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:24,025 INFO L93 Difference]: Finished difference Result 3801 states and 5679 transitions. [2024-10-12 22:06:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 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 1002 [2024-10-12 22:06:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:24,029 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:24,029 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:24,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:24,031 INFO L432 NwaCegarLoop]: 2787 mSDtfsCounter, 2395 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5572 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:24,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 5572 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4936708860759493) internal successors, (2950), 1975 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2950 transitions. [2024-10-12 22:06:24,050 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2950 transitions. Word has length 1002 [2024-10-12 22:06:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:24,050 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2950 transitions. [2024-10-12 22:06:24,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2950 transitions. [2024-10-12 22:06:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2024-10-12 22:06:24,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:24,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:24,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 22:06:24,058 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:24,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 354001706, now seen corresponding path program 1 times [2024-10-12 22:06:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:24,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635069878] [2024-10-12 22:06:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:25,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635069878] [2024-10-12 22:06:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635069878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:25,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:25,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110153503] [2024-10-12 22:06:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:25,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:25,360 INFO L87 Difference]: Start difference. First operand 1976 states and 2950 transitions. Second operand has 4 states, 4 states have (on average 250.75) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:25,483 INFO L93 Difference]: Finished difference Result 3801 states and 5677 transitions. [2024-10-12 22:06:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 3 states have internal predecessors, (1003), 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 1003 [2024-10-12 22:06:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:25,486 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:25,486 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:25,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:25,488 INFO L432 NwaCegarLoop]: 2786 mSDtfsCounter, 2389 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:25,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 5570 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:06:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4931645569620253) internal successors, (2949), 1975 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2949 transitions. [2024-10-12 22:06:25,514 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2949 transitions. Word has length 1003 [2024-10-12 22:06:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:25,515 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2949 transitions. [2024-10-12 22:06:25,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2949 transitions. [2024-10-12 22:06:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2024-10-12 22:06:25,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:25,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:25,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 22:06:25,533 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:25,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2006226626, now seen corresponding path program 1 times [2024-10-12 22:06:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687355141] [2024-10-12 22:06:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687355141] [2024-10-12 22:06:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687355141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:06:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943532429] [2024-10-12 22:06:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:26,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:06:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:06:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:06:26,992 INFO L87 Difference]: Start difference. First operand 1976 states and 2949 transitions. Second operand has 4 states, 4 states have (on average 251.0) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:27,049 INFO L93 Difference]: Finished difference Result 3801 states and 5675 transitions. [2024-10-12 22:06:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 251.0) internal successors, (1004), 3 states have internal predecessors, (1004), 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 1004 [2024-10-12 22:06:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:27,054 INFO L225 Difference]: With dead ends: 3801 [2024-10-12 22:06:27,054 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 22:06:27,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:27,056 INFO L432 NwaCegarLoop]: 2816 mSDtfsCounter, 2385 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:27,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2385 Valid, 5630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 22:06:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2024-10-12 22:06:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4926582278481013) internal successors, (2948), 1975 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2948 transitions. [2024-10-12 22:06:27,083 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2948 transitions. Word has length 1004 [2024-10-12 22:06:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:27,085 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2948 transitions. [2024-10-12 22:06:27,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.0) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2948 transitions. [2024-10-12 22:06:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2024-10-12 22:06:27,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:27,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:27,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 22:06:27,100 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:27,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash -617919594, now seen corresponding path program 1 times [2024-10-12 22:06:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:27,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740756401] [2024-10-12 22:06:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 22:06:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740756401] [2024-10-12 22:06:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740756401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:28,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 22:06:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379655811] [2024-10-12 22:06:28,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:28,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:06:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:06:28,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:28,931 INFO L87 Difference]: Start difference. First operand 1976 states and 2948 transitions. Second operand has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:28,989 INFO L93 Difference]: Finished difference Result 3803 states and 5676 transitions. [2024-10-12 22:06:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:06:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 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 1005 [2024-10-12 22:06:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:28,994 INFO L225 Difference]: With dead ends: 3803 [2024-10-12 22:06:28,994 INFO L226 Difference]: Without dead ends: 1978 [2024-10-12 22:06:28,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:06:28,996 INFO L432 NwaCegarLoop]: 2823 mSDtfsCounter, 0 mSDsluCounter, 5629 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:28,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8452 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:06:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-10-12 22:06:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2024-10-12 22:06:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4926582278481013) internal successors, (2948), 1975 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2948 transitions. [2024-10-12 22:06:29,020 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2948 transitions. Word has length 1005 [2024-10-12 22:06:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:29,021 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2948 transitions. [2024-10-12 22:06:29,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2948 transitions. [2024-10-12 22:06:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2024-10-12 22:06:29,034 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:29,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:29,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 22:06:29,035 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:29,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1066750922, now seen corresponding path program 1 times [2024-10-12 22:06:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63829662] [2024-10-12 22:06:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63829662] [2024-10-12 22:06:31,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63829662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:31,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 22:06:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747796258] [2024-10-12 22:06:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:31,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 22:06:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 22:06:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:06:31,455 INFO L87 Difference]: Start difference. First operand 1976 states and 2948 transitions. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 5 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:31,828 INFO L93 Difference]: Finished difference Result 3807 states and 5681 transitions. [2024-10-12 22:06:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 22:06:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 5 states have internal predecessors, (1006), 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 1006 [2024-10-12 22:06:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:31,832 INFO L225 Difference]: With dead ends: 3807 [2024-10-12 22:06:31,832 INFO L226 Difference]: Without dead ends: 1980 [2024-10-12 22:06:31,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:06:31,834 INFO L432 NwaCegarLoop]: 2688 mSDtfsCounter, 2744 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:31,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 10740 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 22:06:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2024-10-12 22:06:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1978. [2024-10-12 22:06:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.4921598381385939) internal successors, (2950), 1977 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2950 transitions. [2024-10-12 22:06:31,857 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2950 transitions. Word has length 1006 [2024-10-12 22:06:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:31,858 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2950 transitions. [2024-10-12 22:06:31,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 5 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2950 transitions. [2024-10-12 22:06:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2024-10-12 22:06:31,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:31,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:31,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 22:06:31,871 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:31,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash 212949729, now seen corresponding path program 1 times [2024-10-12 22:06:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:31,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032057431] [2024-10-12 22:06:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:31,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:06:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:06:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:06:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032057431] [2024-10-12 22:06:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032057431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:06:34,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:06:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 22:06:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131570926] [2024-10-12 22:06:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:06:34,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 22:06:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:06:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 22:06:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:06:34,113 INFO L87 Difference]: Start difference. First operand 1978 states and 2950 transitions. Second operand has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:06:34,436 INFO L93 Difference]: Finished difference Result 3811 states and 5685 transitions. [2024-10-12 22:06:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 22:06:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 1007 [2024-10-12 22:06:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:06:34,439 INFO L225 Difference]: With dead ends: 3811 [2024-10-12 22:06:34,439 INFO L226 Difference]: Without dead ends: 1982 [2024-10-12 22:06:34,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:06:34,441 INFO L432 NwaCegarLoop]: 2688 mSDtfsCounter, 2798 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 22:06:34,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 10740 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 22:06:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-12 22:06:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1980. [2024-10-12 22:06:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 1.4916624557857503) internal successors, (2952), 1979 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2952 transitions. [2024-10-12 22:06:34,461 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2952 transitions. Word has length 1007 [2024-10-12 22:06:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:06:34,461 INFO L471 AbstractCegarLoop]: Abstraction has 1980 states and 2952 transitions. [2024-10-12 22:06:34,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:06:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2952 transitions. [2024-10-12 22:06:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2024-10-12 22:06:34,467 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:06:34,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:06:34,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 22:06:34,468 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:06:34,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:06:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 537117875, now seen corresponding path program 1 times [2024-10-12 22:06:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:06:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281745179] [2024-10-12 22:06:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:06:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:06:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat