./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:19:23,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:19:23,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:19:23,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:19:23,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:19:23,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:19:23,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:19:23,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:19:23,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:19:23,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:19:23,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:19:23,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:19:23,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:19:23,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:19:23,689 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:19:23,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:19:23,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:19:23,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:19:23,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:19:23,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:19:23,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:19:23,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:19:23,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:19:23,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:19:23,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:19:23,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:19:23,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:19:23,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:19:23,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:19:23,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:19:23,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:19:23,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:19:23,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:19:23,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:19:23,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:19:23,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:19:23,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:19:23,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:19:23,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:19:23,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:19:23,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:19:23,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:19:23,704 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 [2024-10-12 20:19:23,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:19:23,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:19:23,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:19:23,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:19:23,989 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:19:23,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-12 20:19:25,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:19:25,660 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:19:25,661 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-12 20:19:25,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c7a4413/3deb858f169e4918bd2a26bee0a1737d/FLAGda49a4eeb [2024-10-12 20:19:25,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c7a4413/3deb858f169e4918bd2a26bee0a1737d [2024-10-12 20:19:25,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:19:25,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:19:25,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:19:25,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:19:25,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:19:25,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:25" (1/1) ... [2024-10-12 20:19:25,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e79688a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:25, skipping insertion in model container [2024-10-12 20:19:25,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:25" (1/1) ... [2024-10-12 20:19:25,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:19:26,020 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2024-10-12 20:19:26,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:19:26,080 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:19:26,146 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2024-10-12 20:19:26,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:19:26,216 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:19:26,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26 WrapperNode [2024-10-12 20:19:26,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:19:26,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:19:26,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:19:26,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:19:26,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,271 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 647 [2024-10-12 20:19:26,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:19:26,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:19:26,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:19:26,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:19:26,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,312 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 20:19:26,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:19:26,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:19:26,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:19:26,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:19:26,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (1/1) ... [2024-10-12 20:19:26,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:19:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:19:26,379 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 20:19:26,384 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 20:19:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:19:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:19:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:19:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:19:26,576 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:19:26,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:19:27,244 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-10-12 20:19:27,244 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:19:27,297 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:19:27,297 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 20:19:27,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:27 BoogieIcfgContainer [2024-10-12 20:19:27,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:19:27,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:19:27,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:19:27,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:19:27,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:19:25" (1/3) ... [2024-10-12 20:19:27,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a3d809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:27, skipping insertion in model container [2024-10-12 20:19:27,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:26" (2/3) ... [2024-10-12 20:19:27,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a3d809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:27, skipping insertion in model container [2024-10-12 20:19:27,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:27" (3/3) ... [2024-10-12 20:19:27,306 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-12 20:19:27,320 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:19:27,320 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:19:27,380 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:19:27,386 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;@6896fbe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:19:27,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:19:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 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 20:19:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-12 20:19:27,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:27,398 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] [2024-10-12 20:19:27,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:27,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1575541599, now seen corresponding path program 1 times [2024-10-12 20:19:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:27,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397726005] [2024-10-12 20:19:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:27,980 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 20:19:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397726005] [2024-10-12 20:19:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397726005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:27,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:27,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955503859] [2024-10-12 20:19:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:27,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:27,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:28,019 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 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 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:19:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:28,253 INFO L93 Difference]: Finished difference Result 510 states and 828 transitions. [2024-10-12 20:19:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:28,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-10-12 20:19:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:28,274 INFO L225 Difference]: With dead ends: 510 [2024-10-12 20:19:28,277 INFO L226 Difference]: Without dead ends: 436 [2024-10-12 20:19:28,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:28,285 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:28,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1264 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-10-12 20:19:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 254. [2024-10-12 20:19:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.517786561264822) internal successors, (384), 253 states have internal predecessors, (384), 0 states have call successors, (0), 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 20:19:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2024-10-12 20:19:28,357 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 48 [2024-10-12 20:19:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:28,357 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2024-10-12 20:19:28,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:19:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2024-10-12 20:19:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:28,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:28,359 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] [2024-10-12 20:19:28,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:19:28,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:28,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1998714766, now seen corresponding path program 1 times [2024-10-12 20:19:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:28,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030377211] [2024-10-12 20:19:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:28,476 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 20:19:28,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030377211] [2024-10-12 20:19:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030377211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:28,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:28,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918081255] [2024-10-12 20:19:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:28,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,480 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:28,523 INFO L93 Difference]: Finished difference Result 626 states and 964 transitions. [2024-10-12 20:19:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 20:19:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:28,527 INFO L225 Difference]: With dead ends: 626 [2024-10-12 20:19:28,527 INFO L226 Difference]: Without dead ends: 428 [2024-10-12 20:19:28,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,529 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:28,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-12 20:19:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2024-10-12 20:19:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5058823529411764) internal successors, (640), 425 states have internal predecessors, (640), 0 states have call successors, (0), 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 20:19:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 640 transitions. [2024-10-12 20:19:28,553 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 640 transitions. Word has length 51 [2024-10-12 20:19:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:28,557 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 640 transitions. [2024-10-12 20:19:28,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 640 transitions. [2024-10-12 20:19:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:28,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:28,560 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] [2024-10-12 20:19:28,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:19:28,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:28,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -794348179, now seen corresponding path program 1 times [2024-10-12 20:19:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970703203] [2024-10-12 20:19:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:28,655 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 20:19:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970703203] [2024-10-12 20:19:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970703203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207370067] [2024-10-12 20:19:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:28,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,657 INFO L87 Difference]: Start difference. First operand 426 states and 640 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:28,694 INFO L93 Difference]: Finished difference Result 1076 states and 1637 transitions. [2024-10-12 20:19:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 20:19:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:28,697 INFO L225 Difference]: With dead ends: 1076 [2024-10-12 20:19:28,697 INFO L226 Difference]: Without dead ends: 748 [2024-10-12 20:19:28,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,703 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:28,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:28,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-10-12 20:19:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2024-10-12 20:19:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4953020134228188) internal successors, (1114), 745 states have internal predecessors, (1114), 0 states have call successors, (0), 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 20:19:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1114 transitions. [2024-10-12 20:19:28,738 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1114 transitions. Word has length 51 [2024-10-12 20:19:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:28,740 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1114 transitions. [2024-10-12 20:19:28,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1114 transitions. [2024-10-12 20:19:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:28,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:28,746 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] [2024-10-12 20:19:28,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:19:28,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:28,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:28,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1645949330, now seen corresponding path program 1 times [2024-10-12 20:19:28,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:28,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25962080] [2024-10-12 20:19:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:28,854 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 20:19:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25962080] [2024-10-12 20:19:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25962080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361842660] [2024-10-12 20:19:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:28,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,856 INFO L87 Difference]: Start difference. First operand 746 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:28,949 INFO L93 Difference]: Finished difference Result 1856 states and 2791 transitions. [2024-10-12 20:19:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 20:19:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:28,963 INFO L225 Difference]: With dead ends: 1856 [2024-10-12 20:19:28,964 INFO L226 Difference]: Without dead ends: 1292 [2024-10-12 20:19:28,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:28,969 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:28,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-10-12 20:19:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1290. [2024-10-12 20:19:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.4755624515128005) internal successors, (1902), 1289 states have internal predecessors, (1902), 0 states have call successors, (0), 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 20:19:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1902 transitions. [2024-10-12 20:19:29,050 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1902 transitions. Word has length 51 [2024-10-12 20:19:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:29,051 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 1902 transitions. [2024-10-12 20:19:29,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:19:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1902 transitions. [2024-10-12 20:19:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 20:19:29,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:29,057 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] [2024-10-12 20:19:29,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:19:29,058 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:29,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash 245016470, now seen corresponding path program 1 times [2024-10-12 20:19:29,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:29,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102688617] [2024-10-12 20:19:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:29,208 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 20:19:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102688617] [2024-10-12 20:19:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102688617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:29,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:29,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200618370] [2024-10-12 20:19:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:29,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:29,213 INFO L87 Difference]: Start difference. First operand 1290 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:29,316 INFO L93 Difference]: Finished difference Result 2510 states and 3767 transitions. [2024-10-12 20:19:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 20:19:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:29,326 INFO L225 Difference]: With dead ends: 2510 [2024-10-12 20:19:29,327 INFO L226 Difference]: Without dead ends: 2144 [2024-10-12 20:19:29,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:29,330 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:29,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1140 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2024-10-12 20:19:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1739. [2024-10-12 20:19:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 1.4838895281933258) internal successors, (2579), 1738 states have internal predecessors, (2579), 0 states have call successors, (0), 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 20:19:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2579 transitions. [2024-10-12 20:19:29,370 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2579 transitions. Word has length 52 [2024-10-12 20:19:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:29,370 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2579 transitions. [2024-10-12 20:19:29,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2579 transitions. [2024-10-12 20:19:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 20:19:29,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:29,373 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] [2024-10-12 20:19:29,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:19:29,373 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:29,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -102096570, now seen corresponding path program 1 times [2024-10-12 20:19:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:29,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172999901] [2024-10-12 20:19:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:29,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:29,543 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 20:19:29,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:29,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172999901] [2024-10-12 20:19:29,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172999901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:29,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:29,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448493884] [2024-10-12 20:19:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:29,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:29,546 INFO L87 Difference]: Start difference. First operand 1739 states and 2579 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:29,636 INFO L93 Difference]: Finished difference Result 2959 states and 4444 transitions. [2024-10-12 20:19:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:29,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 20:19:29,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:29,648 INFO L225 Difference]: With dead ends: 2959 [2024-10-12 20:19:29,648 INFO L226 Difference]: Without dead ends: 2593 [2024-10-12 20:19:29,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:29,651 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:29,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 995 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2024-10-12 20:19:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2084. [2024-10-12 20:19:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.4891982717234757) internal successors, (3102), 2083 states have internal predecessors, (3102), 0 states have call successors, (0), 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 20:19:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3102 transitions. [2024-10-12 20:19:29,707 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3102 transitions. Word has length 52 [2024-10-12 20:19:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:29,708 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 3102 transitions. [2024-10-12 20:19:29,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3102 transitions. [2024-10-12 20:19:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 20:19:29,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:29,710 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] [2024-10-12 20:19:29,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:19:29,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:29,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1890794456, now seen corresponding path program 1 times [2024-10-12 20:19:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:29,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177997049] [2024-10-12 20:19:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:29,874 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 20:19:29,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177997049] [2024-10-12 20:19:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177997049] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142065571] [2024-10-12 20:19:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:29,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:29,876 INFO L87 Difference]: Start difference. First operand 2084 states and 3102 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:29,988 INFO L93 Difference]: Finished difference Result 3358 states and 5044 transitions. [2024-10-12 20:19:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 20:19:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:29,998 INFO L225 Difference]: With dead ends: 3358 [2024-10-12 20:19:29,998 INFO L226 Difference]: Without dead ends: 2992 [2024-10-12 20:19:30,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:30,002 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 633 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:30,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1140 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-10-12 20:19:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2374. [2024-10-12 20:19:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.493046776232617) internal successors, (3543), 2373 states have internal predecessors, (3543), 0 states have call successors, (0), 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 20:19:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3543 transitions. [2024-10-12 20:19:30,082 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3543 transitions. Word has length 52 [2024-10-12 20:19:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:30,083 INFO L471 AbstractCegarLoop]: Abstraction has 2374 states and 3543 transitions. [2024-10-12 20:19:30,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3543 transitions. [2024-10-12 20:19:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 20:19:30,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:30,086 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] [2024-10-12 20:19:30,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:19:30,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:30,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash 906241263, now seen corresponding path program 1 times [2024-10-12 20:19:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300757055] [2024-10-12 20:19:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:30,236 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 20:19:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300757055] [2024-10-12 20:19:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300757055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:30,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284437869] [2024-10-12 20:19:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:30,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:30,241 INFO L87 Difference]: Start difference. First operand 2374 states and 3543 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:30,466 INFO L93 Difference]: Finished difference Result 5638 states and 8418 transitions. [2024-10-12 20:19:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:30,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 20:19:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:30,478 INFO L225 Difference]: With dead ends: 5638 [2024-10-12 20:19:30,479 INFO L226 Difference]: Without dead ends: 3308 [2024-10-12 20:19:30,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:30,483 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 903 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:30,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 228 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2024-10-12 20:19:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3290. [2024-10-12 20:19:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.482213438735178) internal successors, (4875), 3289 states have internal predecessors, (4875), 0 states have call successors, (0), 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 20:19:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4875 transitions. [2024-10-12 20:19:30,548 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4875 transitions. Word has length 56 [2024-10-12 20:19:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:30,549 INFO L471 AbstractCegarLoop]: Abstraction has 3290 states and 4875 transitions. [2024-10-12 20:19:30,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4875 transitions. [2024-10-12 20:19:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 20:19:30,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:30,551 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] [2024-10-12 20:19:30,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:19:30,551 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:30,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 616335039, now seen corresponding path program 1 times [2024-10-12 20:19:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832814229] [2024-10-12 20:19:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:30,651 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 20:19:30,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832814229] [2024-10-12 20:19:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832814229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:30,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:30,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826986961] [2024-10-12 20:19:30,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:30,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:30,653 INFO L87 Difference]: Start difference. First operand 3290 states and 4875 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:30,906 INFO L93 Difference]: Finished difference Result 7769 states and 11510 transitions. [2024-10-12 20:19:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 20:19:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:30,920 INFO L225 Difference]: With dead ends: 7769 [2024-10-12 20:19:30,921 INFO L226 Difference]: Without dead ends: 4559 [2024-10-12 20:19:30,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:30,925 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 860 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:30,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 230 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2024-10-12 20:19:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4534. [2024-10-12 20:19:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 1.4683432605338629) internal successors, (6656), 4533 states have internal predecessors, (6656), 0 states have call successors, (0), 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 20:19:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6656 transitions. [2024-10-12 20:19:31,012 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6656 transitions. Word has length 56 [2024-10-12 20:19:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:31,012 INFO L471 AbstractCegarLoop]: Abstraction has 4534 states and 6656 transitions. [2024-10-12 20:19:31,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6656 transitions. [2024-10-12 20:19:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 20:19:31,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:31,015 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] [2024-10-12 20:19:31,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:19:31,016 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:31,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1205433356, now seen corresponding path program 1 times [2024-10-12 20:19:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892015609] [2024-10-12 20:19:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:31,106 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 20:19:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892015609] [2024-10-12 20:19:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892015609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:31,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:31,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851342707] [2024-10-12 20:19:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:31,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:31,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:31,108 INFO L87 Difference]: Start difference. First operand 4534 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:31,370 INFO L93 Difference]: Finished difference Result 13044 states and 19180 transitions. [2024-10-12 20:19:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 20:19:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:31,410 INFO L225 Difference]: With dead ends: 13044 [2024-10-12 20:19:31,411 INFO L226 Difference]: Without dead ends: 8536 [2024-10-12 20:19:31,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:31,420 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 927 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:31,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 217 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2024-10-12 20:19:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8485. [2024-10-12 20:19:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8485 states, 8484 states have (on average 1.458038661008958) internal successors, (12370), 8484 states have internal predecessors, (12370), 0 states have call successors, (0), 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 20:19:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8485 states to 8485 states and 12370 transitions. [2024-10-12 20:19:31,617 INFO L78 Accepts]: Start accepts. Automaton has 8485 states and 12370 transitions. Word has length 57 [2024-10-12 20:19:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:31,617 INFO L471 AbstractCegarLoop]: Abstraction has 8485 states and 12370 transitions. [2024-10-12 20:19:31,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 8485 states and 12370 transitions. [2024-10-12 20:19:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 20:19:31,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:31,622 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] [2024-10-12 20:19:31,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:19:31,622 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:31,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1874451944, now seen corresponding path program 1 times [2024-10-12 20:19:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315677764] [2024-10-12 20:19:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:31,772 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 20:19:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315677764] [2024-10-12 20:19:31,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315677764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965557836] [2024-10-12 20:19:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:31,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:31,774 INFO L87 Difference]: Start difference. First operand 8485 states and 12370 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:32,148 INFO L93 Difference]: Finished difference Result 19247 states and 27806 transitions. [2024-10-12 20:19:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-10-12 20:19:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:32,178 INFO L225 Difference]: With dead ends: 19247 [2024-10-12 20:19:32,178 INFO L226 Difference]: Without dead ends: 14917 [2024-10-12 20:19:32,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:32,188 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 1118 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:32,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 328 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14917 states. [2024-10-12 20:19:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14917 to 8505. [2024-10-12 20:19:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8505 states, 8504 states have (on average 1.4574317968015051) internal successors, (12394), 8504 states have internal predecessors, (12394), 0 states have call successors, (0), 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 20:19:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 12394 transitions. [2024-10-12 20:19:32,445 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 12394 transitions. Word has length 58 [2024-10-12 20:19:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:32,445 INFO L471 AbstractCegarLoop]: Abstraction has 8505 states and 12394 transitions. [2024-10-12 20:19:32,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 12394 transitions. [2024-10-12 20:19:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 20:19:32,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:32,450 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] [2024-10-12 20:19:32,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:19:32,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:32,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 911284937, now seen corresponding path program 1 times [2024-10-12 20:19:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387328202] [2024-10-12 20:19:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:32,624 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 20:19:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387328202] [2024-10-12 20:19:32,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387328202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:32,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614242647] [2024-10-12 20:19:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:32,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:32,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:32,627 INFO L87 Difference]: Start difference. First operand 8505 states and 12394 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:33,024 INFO L93 Difference]: Finished difference Result 22476 states and 32453 transitions. [2024-10-12 20:19:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-10-12 20:19:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:33,055 INFO L225 Difference]: With dead ends: 22476 [2024-10-12 20:19:33,055 INFO L226 Difference]: Without dead ends: 18234 [2024-10-12 20:19:33,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:33,069 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1299 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:33,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 376 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2024-10-12 20:19:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 8615. [2024-10-12 20:19:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8615 states, 8614 states have (on average 1.4553053169259345) internal successors, (12536), 8614 states have internal predecessors, (12536), 0 states have call successors, (0), 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 20:19:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8615 states to 8615 states and 12536 transitions. [2024-10-12 20:19:33,309 INFO L78 Accepts]: Start accepts. Automaton has 8615 states and 12536 transitions. Word has length 58 [2024-10-12 20:19:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:33,309 INFO L471 AbstractCegarLoop]: Abstraction has 8615 states and 12536 transitions. [2024-10-12 20:19:33,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 8615 states and 12536 transitions. [2024-10-12 20:19:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 20:19:33,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:33,313 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] [2024-10-12 20:19:33,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:19:33,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:33,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash 363659370, now seen corresponding path program 1 times [2024-10-12 20:19:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:33,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014198885] [2024-10-12 20:19:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:33,445 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 20:19:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014198885] [2024-10-12 20:19:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014198885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:33,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:33,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276221810] [2024-10-12 20:19:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:33,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:33,449 INFO L87 Difference]: Start difference. First operand 8615 states and 12536 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:33,880 INFO L93 Difference]: Finished difference Result 24935 states and 35946 transitions. [2024-10-12 20:19:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-10-12 20:19:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:33,920 INFO L225 Difference]: With dead ends: 24935 [2024-10-12 20:19:33,920 INFO L226 Difference]: Without dead ends: 21837 [2024-10-12 20:19:33,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:33,933 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 1456 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:33,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 387 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21837 states. [2024-10-12 20:19:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21837 to 8671. [2024-10-12 20:19:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8671 states, 8670 states have (on average 1.4538638985005767) internal successors, (12605), 8670 states have internal predecessors, (12605), 0 states have call successors, (0), 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 20:19:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8671 states to 8671 states and 12605 transitions. [2024-10-12 20:19:34,160 INFO L78 Accepts]: Start accepts. Automaton has 8671 states and 12605 transitions. Word has length 58 [2024-10-12 20:19:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:34,160 INFO L471 AbstractCegarLoop]: Abstraction has 8671 states and 12605 transitions. [2024-10-12 20:19:34,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:19:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8671 states and 12605 transitions. [2024-10-12 20:19:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 20:19:34,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:34,165 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] [2024-10-12 20:19:34,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:19:34,165 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:34,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 13401980, now seen corresponding path program 1 times [2024-10-12 20:19:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:34,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432667445] [2024-10-12 20:19:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:34,556 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 20:19:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:34,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432667445] [2024-10-12 20:19:34,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432667445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:34,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:34,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:34,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188817126] [2024-10-12 20:19:34,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:34,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:34,560 INFO L87 Difference]: Start difference. First operand 8671 states and 12605 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:35,300 INFO L93 Difference]: Finished difference Result 20880 states and 30396 transitions. [2024-10-12 20:19:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 20:19:35,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-10-12 20:19:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:35,331 INFO L225 Difference]: With dead ends: 20880 [2024-10-12 20:19:35,331 INFO L226 Difference]: Without dead ends: 13727 [2024-10-12 20:19:35,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:19:35,345 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 962 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:35,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 753 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 20:19:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13727 states. [2024-10-12 20:19:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13727 to 8511. [2024-10-12 20:19:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 8510 states have (on average 1.4509988249118684) internal successors, (12348), 8510 states have internal predecessors, (12348), 0 states have call successors, (0), 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 20:19:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 12348 transitions. [2024-10-12 20:19:35,625 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 12348 transitions. Word has length 60 [2024-10-12 20:19:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:35,626 INFO L471 AbstractCegarLoop]: Abstraction has 8511 states and 12348 transitions. [2024-10-12 20:19:35,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 12348 transitions. [2024-10-12 20:19:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 20:19:35,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:35,633 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] [2024-10-12 20:19:35,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:19:35,633 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:35,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash -838199171, now seen corresponding path program 1 times [2024-10-12 20:19:35,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:35,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253827884] [2024-10-12 20:19:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:35,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:35,952 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 20:19:35,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253827884] [2024-10-12 20:19:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253827884] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:35,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:35,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289717627] [2024-10-12 20:19:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:35,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:35,954 INFO L87 Difference]: Start difference. First operand 8511 states and 12348 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:36,649 INFO L93 Difference]: Finished difference Result 19550 states and 28309 transitions. [2024-10-12 20:19:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 20:19:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-10-12 20:19:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:36,672 INFO L225 Difference]: With dead ends: 19550 [2024-10-12 20:19:36,673 INFO L226 Difference]: Without dead ends: 12268 [2024-10-12 20:19:36,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:19:36,687 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 988 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:36,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 720 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 20:19:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2024-10-12 20:19:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 8230. [2024-10-12 20:19:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8229 states have (on average 1.4487787094422167) internal successors, (11922), 8229 states have internal predecessors, (11922), 0 states have call successors, (0), 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 20:19:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 11922 transitions. [2024-10-12 20:19:36,860 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 11922 transitions. Word has length 60 [2024-10-12 20:19:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:36,860 INFO L471 AbstractCegarLoop]: Abstraction has 8230 states and 11922 transitions. [2024-10-12 20:19:36,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 11922 transitions. [2024-10-12 20:19:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 20:19:36,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:36,864 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] [2024-10-12 20:19:36,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:19:36,864 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:36,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1719999038, now seen corresponding path program 1 times [2024-10-12 20:19:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733421607] [2024-10-12 20:19:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:37,121 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 20:19:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733421607] [2024-10-12 20:19:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733421607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:37,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133560242] [2024-10-12 20:19:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:37,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:37,123 INFO L87 Difference]: Start difference. First operand 8230 states and 11922 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:37,659 INFO L93 Difference]: Finished difference Result 20311 states and 29514 transitions. [2024-10-12 20:19:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 20:19:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-10-12 20:19:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:37,680 INFO L225 Difference]: With dead ends: 20311 [2024-10-12 20:19:37,680 INFO L226 Difference]: Without dead ends: 13235 [2024-10-12 20:19:37,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-10-12 20:19:37,692 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 544 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:37,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 790 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13235 states. [2024-10-12 20:19:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 8081. [2024-10-12 20:19:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 8080 states have (on average 1.449381188118812) internal successors, (11711), 8080 states have internal predecessors, (11711), 0 states have call successors, (0), 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 20:19:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 11711 transitions. [2024-10-12 20:19:37,921 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 11711 transitions. Word has length 60 [2024-10-12 20:19:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:37,921 INFO L471 AbstractCegarLoop]: Abstraction has 8081 states and 11711 transitions. [2024-10-12 20:19:37,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:19:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 11711 transitions. [2024-10-12 20:19:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:37,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:37,925 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] [2024-10-12 20:19:37,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:19:37,925 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:37,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash 677385480, now seen corresponding path program 1 times [2024-10-12 20:19:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082123447] [2024-10-12 20:19:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:37,989 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 20:19:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082123447] [2024-10-12 20:19:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082123447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635894834] [2024-10-12 20:19:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:37,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:37,992 INFO L87 Difference]: Start difference. First operand 8081 states and 11711 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:38,044 INFO L93 Difference]: Finished difference Result 11128 states and 16084 transitions. [2024-10-12 20:19:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:38,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-10-12 20:19:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:38,055 INFO L225 Difference]: With dead ends: 11128 [2024-10-12 20:19:38,055 INFO L226 Difference]: Without dead ends: 7898 [2024-10-12 20:19:38,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,062 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 152 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:38,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 526 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2024-10-12 20:19:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7896. [2024-10-12 20:19:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 7895 states have (on average 1.4224192526915769) internal successors, (11230), 7895 states have internal predecessors, (11230), 0 states have call successors, (0), 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 20:19:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 11230 transitions. [2024-10-12 20:19:38,169 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 11230 transitions. Word has length 61 [2024-10-12 20:19:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:38,169 INFO L471 AbstractCegarLoop]: Abstraction has 7896 states and 11230 transitions. [2024-10-12 20:19:38,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 11230 transitions. [2024-10-12 20:19:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:38,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:38,173 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] [2024-10-12 20:19:38,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:19:38,173 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:38,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash 732531518, now seen corresponding path program 1 times [2024-10-12 20:19:38,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:38,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118196205] [2024-10-12 20:19:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:38,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:38,223 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 20:19:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118196205] [2024-10-12 20:19:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118196205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:38,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:38,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314888139] [2024-10-12 20:19:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:38,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,226 INFO L87 Difference]: Start difference. First operand 7896 states and 11230 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:38,270 INFO L93 Difference]: Finished difference Result 11305 states and 16075 transitions. [2024-10-12 20:19:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:38,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-10-12 20:19:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:38,279 INFO L225 Difference]: With dead ends: 11305 [2024-10-12 20:19:38,279 INFO L226 Difference]: Without dead ends: 7024 [2024-10-12 20:19:38,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,287 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 138 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:38,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 518 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2024-10-12 20:19:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 7022. [2024-10-12 20:19:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7022 states, 7021 states have (on average 1.4006551773251674) internal successors, (9834), 7021 states have internal predecessors, (9834), 0 states have call successors, (0), 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 20:19:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7022 states to 7022 states and 9834 transitions. [2024-10-12 20:19:38,429 INFO L78 Accepts]: Start accepts. Automaton has 7022 states and 9834 transitions. Word has length 61 [2024-10-12 20:19:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:38,429 INFO L471 AbstractCegarLoop]: Abstraction has 7022 states and 9834 transitions. [2024-10-12 20:19:38,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7022 states and 9834 transitions. [2024-10-12 20:19:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:38,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:38,433 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] [2024-10-12 20:19:38,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 20:19:38,433 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:38,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 373087203, now seen corresponding path program 1 times [2024-10-12 20:19:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534416817] [2024-10-12 20:19:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:38,496 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 20:19:38,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:38,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534416817] [2024-10-12 20:19:38,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534416817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:38,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922884716] [2024-10-12 20:19:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:38,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,499 INFO L87 Difference]: Start difference. First operand 7022 states and 9834 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:38,545 INFO L93 Difference]: Finished difference Result 9401 states and 13164 transitions. [2024-10-12 20:19:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-10-12 20:19:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:38,552 INFO L225 Difference]: With dead ends: 9401 [2024-10-12 20:19:38,552 INFO L226 Difference]: Without dead ends: 5419 [2024-10-12 20:19:38,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,559 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 150 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:38,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 529 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2024-10-12 20:19:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5417. [2024-10-12 20:19:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 5416 states have (on average 1.3783234859675038) internal successors, (7465), 5416 states have internal predecessors, (7465), 0 states have call successors, (0), 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 20:19:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 7465 transitions. [2024-10-12 20:19:38,650 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 7465 transitions. Word has length 61 [2024-10-12 20:19:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:38,651 INFO L471 AbstractCegarLoop]: Abstraction has 5417 states and 7465 transitions. [2024-10-12 20:19:38,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 7465 transitions. [2024-10-12 20:19:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:38,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:38,655 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] [2024-10-12 20:19:38,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 20:19:38,655 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:38,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 447474579, now seen corresponding path program 1 times [2024-10-12 20:19:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:38,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174775532] [2024-10-12 20:19:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:38,707 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 20:19:38,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174775532] [2024-10-12 20:19:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174775532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:38,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473447910] [2024-10-12 20:19:38,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:38,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,710 INFO L87 Difference]: Start difference. First operand 5417 states and 7465 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:38,771 INFO L93 Difference]: Finished difference Result 10106 states and 14002 transitions. [2024-10-12 20:19:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:38,782 INFO L225 Difference]: With dead ends: 10106 [2024-10-12 20:19:38,782 INFO L226 Difference]: Without dead ends: 7373 [2024-10-12 20:19:38,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:38,790 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 175 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:38,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 348 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:38,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7373 states. [2024-10-12 20:19:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7373 to 5196. [2024-10-12 20:19:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 5195 states have (on average 1.3776708373435995) internal successors, (7157), 5195 states have internal predecessors, (7157), 0 states have call successors, (0), 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 20:19:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 7157 transitions. [2024-10-12 20:19:38,896 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 7157 transitions. Word has length 62 [2024-10-12 20:19:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:38,896 INFO L471 AbstractCegarLoop]: Abstraction has 5196 states and 7157 transitions. [2024-10-12 20:19:38,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 7157 transitions. [2024-10-12 20:19:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:38,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:38,900 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] [2024-10-12 20:19:38,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 20:19:38,900 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:38,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1495299694, now seen corresponding path program 1 times [2024-10-12 20:19:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537623090] [2024-10-12 20:19:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:39,784 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 20:19:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537623090] [2024-10-12 20:19:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537623090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-12 20:19:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740737644] [2024-10-12 20:19:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:39,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 20:19:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 20:19:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-12 20:19:39,788 INFO L87 Difference]: Start difference. First operand 5196 states and 7157 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:41,006 INFO L93 Difference]: Finished difference Result 12476 states and 17300 transitions. [2024-10-12 20:19:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 20:19:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:41,022 INFO L225 Difference]: With dead ends: 12476 [2024-10-12 20:19:41,022 INFO L226 Difference]: Without dead ends: 11996 [2024-10-12 20:19:41,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-10-12 20:19:41,029 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 1415 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:41,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3207 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 20:19:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11996 states. [2024-10-12 20:19:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11996 to 5107. [2024-10-12 20:19:41,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 1.3760282021151586) internal successors, (7026), 5106 states have internal predecessors, (7026), 0 states have call successors, (0), 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 20:19:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 7026 transitions. [2024-10-12 20:19:41,145 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 7026 transitions. Word has length 62 [2024-10-12 20:19:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:41,145 INFO L471 AbstractCegarLoop]: Abstraction has 5107 states and 7026 transitions. [2024-10-12 20:19:41,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 7026 transitions. [2024-10-12 20:19:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:41,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:41,149 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] [2024-10-12 20:19:41,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 20:19:41,149 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:41,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash 520655926, now seen corresponding path program 1 times [2024-10-12 20:19:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851545333] [2024-10-12 20:19:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:42,285 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 20:19:42,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:42,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851545333] [2024-10-12 20:19:42,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851545333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:42,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:42,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-10-12 20:19:42,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299308055] [2024-10-12 20:19:42,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:42,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 20:19:42,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 20:19:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2024-10-12 20:19:42,288 INFO L87 Difference]: Start difference. First operand 5107 states and 7026 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:44,697 INFO L93 Difference]: Finished difference Result 7452 states and 10259 transitions. [2024-10-12 20:19:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 20:19:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:44,706 INFO L225 Difference]: With dead ends: 7452 [2024-10-12 20:19:44,706 INFO L226 Difference]: Without dead ends: 7337 [2024-10-12 20:19:44,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=361, Invalid=1619, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 20:19:44,710 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 1842 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:44,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1842 Valid, 3845 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 20:19:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2024-10-12 20:19:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 5107. [2024-10-12 20:19:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 1.3758323540932236) internal successors, (7025), 5106 states have internal predecessors, (7025), 0 states have call successors, (0), 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 20:19:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 7025 transitions. [2024-10-12 20:19:44,778 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 7025 transitions. Word has length 62 [2024-10-12 20:19:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:44,779 INFO L471 AbstractCegarLoop]: Abstraction has 5107 states and 7025 transitions. [2024-10-12 20:19:44,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 7025 transitions. [2024-10-12 20:19:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:44,782 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:44,782 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] [2024-10-12 20:19:44,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 20:19:44,782 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:44,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 776629485, now seen corresponding path program 1 times [2024-10-12 20:19:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:44,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109561485] [2024-10-12 20:19:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:44,825 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 20:19:44,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109561485] [2024-10-12 20:19:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109561485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544667365] [2024-10-12 20:19:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:44,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:44,827 INFO L87 Difference]: Start difference. First operand 5107 states and 7025 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:44,884 INFO L93 Difference]: Finished difference Result 9524 states and 13183 transitions. [2024-10-12 20:19:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:44,892 INFO L225 Difference]: With dead ends: 9524 [2024-10-12 20:19:44,892 INFO L226 Difference]: Without dead ends: 6914 [2024-10-12 20:19:44,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:44,899 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 176 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:44,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 348 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2024-10-12 20:19:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 4838. [2024-10-12 20:19:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4838 states, 4837 states have (on average 1.375646061608435) internal successors, (6654), 4837 states have internal predecessors, (6654), 0 states have call successors, (0), 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 20:19:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 6654 transitions. [2024-10-12 20:19:44,978 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 6654 transitions. Word has length 62 [2024-10-12 20:19:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:44,978 INFO L471 AbstractCegarLoop]: Abstraction has 4838 states and 6654 transitions. [2024-10-12 20:19:44,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 6654 transitions. [2024-10-12 20:19:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:19:44,981 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:44,981 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] [2024-10-12 20:19:44,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 20:19:44,981 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:44,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash -205098255, now seen corresponding path program 1 times [2024-10-12 20:19:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772393636] [2024-10-12 20:19:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:45,778 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 20:19:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772393636] [2024-10-12 20:19:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772393636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-12 20:19:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646519471] [2024-10-12 20:19:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:45,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 20:19:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 20:19:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-10-12 20:19:45,780 INFO L87 Difference]: Start difference. First operand 4838 states and 6654 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:19:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:46,953 INFO L93 Difference]: Finished difference Result 8884 states and 12274 transitions. [2024-10-12 20:19:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 20:19:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-12 20:19:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:46,961 INFO L225 Difference]: With dead ends: 8884 [2024-10-12 20:19:46,961 INFO L226 Difference]: Without dead ends: 8649 [2024-10-12 20:19:46,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2024-10-12 20:19:46,963 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 1054 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:46,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2615 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 20:19:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8649 states. [2024-10-12 20:19:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8649 to 4814. [2024-10-12 20:19:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4814 states, 4813 states have (on average 1.3756492831913567) internal successors, (6621), 4813 states have internal predecessors, (6621), 0 states have call successors, (0), 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 20:19:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 6621 transitions. [2024-10-12 20:19:47,031 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 6621 transitions. Word has length 63 [2024-10-12 20:19:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:47,032 INFO L471 AbstractCegarLoop]: Abstraction has 4814 states and 6621 transitions. [2024-10-12 20:19:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:19:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 6621 transitions. [2024-10-12 20:19:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 20:19:47,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:47,035 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] [2024-10-12 20:19:47,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 20:19:47,036 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:47,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1504815385, now seen corresponding path program 1 times [2024-10-12 20:19:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32495142] [2024-10-12 20:19:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:47,128 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 20:19:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32495142] [2024-10-12 20:19:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32495142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464545073] [2024-10-12 20:19:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:47,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:47,130 INFO L87 Difference]: Start difference. First operand 4814 states and 6621 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:19:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:47,189 INFO L93 Difference]: Finished difference Result 4820 states and 6624 transitions. [2024-10-12 20:19:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-10-12 20:19:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:47,194 INFO L225 Difference]: With dead ends: 4820 [2024-10-12 20:19:47,194 INFO L226 Difference]: Without dead ends: 4345 [2024-10-12 20:19:47,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:47,196 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 596 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:47,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 643 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2024-10-12 20:19:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4341. [2024-10-12 20:19:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 4340 states have (on average 1.3778801843317972) internal successors, (5980), 4340 states have internal predecessors, (5980), 0 states have call successors, (0), 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 20:19:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 5980 transitions. [2024-10-12 20:19:47,241 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 5980 transitions. Word has length 66 [2024-10-12 20:19:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:47,241 INFO L471 AbstractCegarLoop]: Abstraction has 4341 states and 5980 transitions. [2024-10-12 20:19:47,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:19:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 5980 transitions. [2024-10-12 20:19:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-12 20:19:47,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:47,245 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] [2024-10-12 20:19:47,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 20:19:47,245 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1123021877, now seen corresponding path program 1 times [2024-10-12 20:19:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653751417] [2024-10-12 20:19:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:47,358 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 20:19:47,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:47,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653751417] [2024-10-12 20:19:47,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653751417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:47,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29692609] [2024-10-12 20:19:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:47,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:47,359 INFO L87 Difference]: Start difference. First operand 4341 states and 5980 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 20:19:47,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:47,400 INFO L93 Difference]: Finished difference Result 11111 states and 15460 transitions. [2024-10-12 20:19:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:47,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-12 20:19:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:47,409 INFO L225 Difference]: With dead ends: 11111 [2024-10-12 20:19:47,409 INFO L226 Difference]: Without dead ends: 7571 [2024-10-12 20:19:47,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:47,414 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 119 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:47,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 442 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2024-10-12 20:19:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 7117. [2024-10-12 20:19:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 7116 states have (on average 1.3835019673974143) internal successors, (9845), 7116 states have internal predecessors, (9845), 0 states have call successors, (0), 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 20:19:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9845 transitions. [2024-10-12 20:19:47,492 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9845 transitions. Word has length 69 [2024-10-12 20:19:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:47,492 INFO L471 AbstractCegarLoop]: Abstraction has 7117 states and 9845 transitions. [2024-10-12 20:19:47,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 20:19:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9845 transitions. [2024-10-12 20:19:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 20:19:47,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:47,496 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] [2024-10-12 20:19:47,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 20:19:47,496 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:47,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1728540681, now seen corresponding path program 1 times [2024-10-12 20:19:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:47,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870823393] [2024-10-12 20:19:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:47,566 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 20:19:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870823393] [2024-10-12 20:19:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870823393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32029673] [2024-10-12 20:19:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:47,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:47,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:47,569 INFO L87 Difference]: Start difference. First operand 7117 states and 9845 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 20:19:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:47,625 INFO L93 Difference]: Finished difference Result 19129 states and 26579 transitions. [2024-10-12 20:19:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-10-12 20:19:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:47,642 INFO L225 Difference]: With dead ends: 19129 [2024-10-12 20:19:47,642 INFO L226 Difference]: Without dead ends: 12813 [2024-10-12 20:19:47,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:47,652 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 109 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:47,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 433 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2024-10-12 20:19:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 11907. [2024-10-12 20:19:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 1.3827481941878044) internal successors, (16463), 11906 states have internal predecessors, (16463), 0 states have call successors, (0), 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 20:19:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 16463 transitions. [2024-10-12 20:19:47,789 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 16463 transitions. Word has length 70 [2024-10-12 20:19:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:47,789 INFO L471 AbstractCegarLoop]: Abstraction has 11907 states and 16463 transitions. [2024-10-12 20:19:47,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 20:19:47,789 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 16463 transitions. [2024-10-12 20:19:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 20:19:47,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:47,795 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] [2024-10-12 20:19:47,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 20:19:47,796 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:47,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -644807243, now seen corresponding path program 1 times [2024-10-12 20:19:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:47,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591501705] [2024-10-12 20:19:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:47,878 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 20:19:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591501705] [2024-10-12 20:19:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591501705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:47,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:47,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750814894] [2024-10-12 20:19:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:47,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:47,879 INFO L87 Difference]: Start difference. First operand 11907 states and 16463 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:47,967 INFO L93 Difference]: Finished difference Result 32063 states and 44209 transitions. [2024-10-12 20:19:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:47,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-12 20:19:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:47,993 INFO L225 Difference]: With dead ends: 32063 [2024-10-12 20:19:47,993 INFO L226 Difference]: Without dead ends: 20795 [2024-10-12 20:19:48,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:48,010 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 114 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:48,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 432 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20795 states. [2024-10-12 20:19:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20795 to 18729. [2024-10-12 20:19:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18729 states, 18728 states have (on average 1.3616510038445109) internal successors, (25501), 18728 states have internal predecessors, (25501), 0 states have call successors, (0), 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 20:19:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18729 states to 18729 states and 25501 transitions. [2024-10-12 20:19:48,225 INFO L78 Accepts]: Start accepts. Automaton has 18729 states and 25501 transitions. Word has length 72 [2024-10-12 20:19:48,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:48,225 INFO L471 AbstractCegarLoop]: Abstraction has 18729 states and 25501 transitions. [2024-10-12 20:19:48,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18729 states and 25501 transitions. [2024-10-12 20:19:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 20:19:48,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:48,229 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] [2024-10-12 20:19:48,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 20:19:48,230 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:48,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1527500110, now seen corresponding path program 1 times [2024-10-12 20:19:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596678640] [2024-10-12 20:19:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:48,414 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 20:19:48,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:48,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596678640] [2024-10-12 20:19:48,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596678640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:48,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690590157] [2024-10-12 20:19:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:48,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:19:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:19:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:19:48,417 INFO L87 Difference]: Start difference. First operand 18729 states and 25501 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 20:19:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:48,489 INFO L93 Difference]: Finished difference Result 20699 states and 28126 transitions. [2024-10-12 20:19:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:19:48,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-12 20:19:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:48,514 INFO L225 Difference]: With dead ends: 20699 [2024-10-12 20:19:48,514 INFO L226 Difference]: Without dead ends: 20697 [2024-10-12 20:19:48,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:19:48,522 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:48,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 968 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20697 states. [2024-10-12 20:19:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20697 to 20697. [2024-10-12 20:19:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20696 states have (on average 1.3272613065326633) internal successors, (27469), 20696 states have internal predecessors, (27469), 0 states have call successors, (0), 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 20:19:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 27469 transitions. [2024-10-12 20:19:48,866 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 27469 transitions. Word has length 73 [2024-10-12 20:19:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:48,867 INFO L471 AbstractCegarLoop]: Abstraction has 20697 states and 27469 transitions. [2024-10-12 20:19:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 20:19:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 27469 transitions. [2024-10-12 20:19:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:19:48,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:48,870 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] [2024-10-12 20:19:48,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 20:19:48,871 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:48,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1583760693, now seen corresponding path program 1 times [2024-10-12 20:19:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457259781] [2024-10-12 20:19:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:48,931 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 20:19:48,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:48,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457259781] [2024-10-12 20:19:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457259781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:48,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:48,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:48,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960639661] [2024-10-12 20:19:48,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:48,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:48,933 INFO L87 Difference]: Start difference. First operand 20697 states and 27469 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 20:19:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:49,086 INFO L93 Difference]: Finished difference Result 50917 states and 67431 transitions. [2024-10-12 20:19:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:49,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-12 20:19:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:49,123 INFO L225 Difference]: With dead ends: 50917 [2024-10-12 20:19:49,123 INFO L226 Difference]: Without dead ends: 30859 [2024-10-12 20:19:49,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:49,148 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 134 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:49,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 320 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30859 states. [2024-10-12 20:19:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30859 to 30529. [2024-10-12 20:19:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30529 states, 30528 states have (on average 1.3008713312368974) internal successors, (39713), 30528 states have internal predecessors, (39713), 0 states have call successors, (0), 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 20:19:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30529 states to 30529 states and 39713 transitions. [2024-10-12 20:19:49,524 INFO L78 Accepts]: Start accepts. Automaton has 30529 states and 39713 transitions. Word has length 74 [2024-10-12 20:19:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:49,524 INFO L471 AbstractCegarLoop]: Abstraction has 30529 states and 39713 transitions. [2024-10-12 20:19:49,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 20:19:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 30529 states and 39713 transitions. [2024-10-12 20:19:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 20:19:49,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:49,537 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 20:19:49,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 20:19:49,537 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:49,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1684095917, now seen corresponding path program 1 times [2024-10-12 20:19:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704905592] [2024-10-12 20:19:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704905592] [2024-10-12 20:19:49,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704905592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:19:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775722070] [2024-10-12 20:19:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:19:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:19:49,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:19:49,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 20:19:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:49,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 20:19:49,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:19:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:51,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:19:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775722070] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:19:52,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:19:52,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 30 [2024-10-12 20:19:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459199361] [2024-10-12 20:19:52,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:19:52,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 20:19:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 20:19:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-10-12 20:19:52,430 INFO L87 Difference]: Start difference. First operand 30529 states and 39713 transitions. Second operand has 31 states, 31 states have (on average 7.516129032258065) internal successors, (233), 30 states have internal predecessors, (233), 0 states have call successors, (0), 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 20:20:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:04,314 INFO L93 Difference]: Finished difference Result 215712 states and 275084 transitions. [2024-10-12 20:20:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-10-12 20:20:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.516129032258065) internal successors, (233), 30 states have internal predecessors, (233), 0 states have call successors, (0), 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 93 [2024-10-12 20:20:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:04,566 INFO L225 Difference]: With dead ends: 215712 [2024-10-12 20:20:04,567 INFO L226 Difference]: Without dead ends: 199806 [2024-10-12 20:20:04,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14149 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6204, Invalid=32802, Unknown=0, NotChecked=0, Total=39006 [2024-10-12 20:20:04,845 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 6125 mSDsluCounter, 7597 mSDsCounter, 0 mSdLazyCounter, 7649 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6125 SdHoareTripleChecker+Valid, 8018 SdHoareTripleChecker+Invalid, 7729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 7649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:04,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6125 Valid, 8018 Invalid, 7729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 7649 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-12 20:20:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199806 states. [2024-10-12 20:20:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199806 to 31018. [2024-10-12 20:20:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31018 states, 31017 states have (on average 1.3000934971144855) internal successors, (40325), 31017 states have internal predecessors, (40325), 0 states have call successors, (0), 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 20:20:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31018 states to 31018 states and 40325 transitions. [2024-10-12 20:20:06,049 INFO L78 Accepts]: Start accepts. Automaton has 31018 states and 40325 transitions. Word has length 93 [2024-10-12 20:20:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:06,049 INFO L471 AbstractCegarLoop]: Abstraction has 31018 states and 40325 transitions. [2024-10-12 20:20:06,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.516129032258065) internal successors, (233), 30 states have internal predecessors, (233), 0 states have call successors, (0), 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 20:20:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31018 states and 40325 transitions. [2024-10-12 20:20:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 20:20:06,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:06,058 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 20:20:06,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 20:20:06,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:06,260 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:06,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -195123861, now seen corresponding path program 1 times [2024-10-12 20:20:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:06,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123313736] [2024-10-12 20:20:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:06,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123313736] [2024-10-12 20:20:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123313736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136236793] [2024-10-12 20:20:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:06,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:06,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:06,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 20:20:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:06,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 20:20:06,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:07,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136236793] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:08,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:08,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 29 [2024-10-12 20:20:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117567495] [2024-10-12 20:20:08,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:08,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 20:20:08,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 20:20:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-10-12 20:20:08,656 INFO L87 Difference]: Start difference. First operand 31018 states and 40325 transitions. Second operand has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:21,682 INFO L93 Difference]: Finished difference Result 225101 states and 288232 transitions. [2024-10-12 20:20:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2024-10-12 20:20:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-12 20:20:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:21,963 INFO L225 Difference]: With dead ends: 225101 [2024-10-12 20:20:21,964 INFO L226 Difference]: Without dead ends: 209363 [2024-10-12 20:20:22,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24077 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=8967, Invalid=50325, Unknown=0, NotChecked=0, Total=59292 [2024-10-12 20:20:22,011 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 6049 mSDsluCounter, 5682 mSDsCounter, 0 mSdLazyCounter, 5998 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6049 SdHoareTripleChecker+Valid, 6027 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:22,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6049 Valid, 6027 Invalid, 6102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5998 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-12 20:20:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209363 states. [2024-10-12 20:20:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209363 to 65250. [2024-10-12 20:20:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65250 states, 65249 states have (on average 1.2999892718662356) internal successors, (84823), 65249 states have internal predecessors, (84823), 0 states have call successors, (0), 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 20:20:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65250 states to 65250 states and 84823 transitions. [2024-10-12 20:20:23,610 INFO L78 Accepts]: Start accepts. Automaton has 65250 states and 84823 transitions. Word has length 93 [2024-10-12 20:20:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:23,610 INFO L471 AbstractCegarLoop]: Abstraction has 65250 states and 84823 transitions. [2024-10-12 20:20:23,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 65250 states and 84823 transitions. [2024-10-12 20:20:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 20:20:23,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:23,621 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 20:20:23,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 20:20:23,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-12 20:20:23,822 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:23,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 939129145, now seen corresponding path program 1 times [2024-10-12 20:20:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780651149] [2024-10-12 20:20:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:24,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780651149] [2024-10-12 20:20:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780651149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:24,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:20:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225326990] [2024-10-12 20:20:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:24,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:20:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:20:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:20:24,330 INFO L87 Difference]: Start difference. First operand 65250 states and 84823 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 20:20:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:25,225 INFO L93 Difference]: Finished difference Result 133905 states and 173413 transitions. [2024-10-12 20:20:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 20:20:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-12 20:20:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:25,358 INFO L225 Difference]: With dead ends: 133905 [2024-10-12 20:20:25,359 INFO L226 Difference]: Without dead ends: 108016 [2024-10-12 20:20:25,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:20:25,398 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 543 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:25,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 832 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 20:20:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108016 states. [2024-10-12 20:20:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108016 to 94711. [2024-10-12 20:20:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94711 states, 94710 states have (on average 1.2994615140956605) internal successors, (123072), 94710 states have internal predecessors, (123072), 0 states have call successors, (0), 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 20:20:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94711 states to 94711 states and 123072 transitions. [2024-10-12 20:20:26,905 INFO L78 Accepts]: Start accepts. Automaton has 94711 states and 123072 transitions. Word has length 93 [2024-10-12 20:20:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:26,905 INFO L471 AbstractCegarLoop]: Abstraction has 94711 states and 123072 transitions. [2024-10-12 20:20:26,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 20:20:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 94711 states and 123072 transitions. [2024-10-12 20:20:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 20:20:26,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:26,919 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 20:20:26,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-12 20:20:26,919 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:26,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 117499966, now seen corresponding path program 1 times [2024-10-12 20:20:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783598106] [2024-10-12 20:20:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 20:20:26,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783598106] [2024-10-12 20:20:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783598106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:26,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:26,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:26,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404925501] [2024-10-12 20:20:26,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:26,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:26,976 INFO L87 Difference]: Start difference. First operand 94711 states and 123072 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 20:20:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:27,809 INFO L93 Difference]: Finished difference Result 192922 states and 250946 transitions. [2024-10-12 20:20:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 20:20:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:27,992 INFO L225 Difference]: With dead ends: 192922 [2024-10-12 20:20:27,992 INFO L226 Difference]: Without dead ends: 99732 [2024-10-12 20:20:28,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:28,040 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 162 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:28,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 197 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:20:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99732 states. [2024-10-12 20:20:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99732 to 93753. [2024-10-12 20:20:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93753 states, 93752 states have (on average 1.2825859714992747) internal successors, (120245), 93752 states have internal predecessors, (120245), 0 states have call successors, (0), 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 20:20:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93753 states to 93753 states and 120245 transitions. [2024-10-12 20:20:29,467 INFO L78 Accepts]: Start accepts. Automaton has 93753 states and 120245 transitions. Word has length 94 [2024-10-12 20:20:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:29,467 INFO L471 AbstractCegarLoop]: Abstraction has 93753 states and 120245 transitions. [2024-10-12 20:20:29,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 20:20:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 93753 states and 120245 transitions. [2024-10-12 20:20:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 20:20:29,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:29,477 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 20:20:29,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-12 20:20:29,477 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:29,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1857546055, now seen corresponding path program 1 times [2024-10-12 20:20:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:29,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553866563] [2024-10-12 20:20:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553866563] [2024-10-12 20:20:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553866563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747990943] [2024-10-12 20:20:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:29,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:29,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:29,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 20:20:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:29,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 20:20:29,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:30,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747990943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:30,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 19 [2024-10-12 20:20:30,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128553638] [2024-10-12 20:20:30,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:30,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 20:20:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:30,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 20:20:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-12 20:20:30,749 INFO L87 Difference]: Start difference. First operand 93753 states and 120245 transitions. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 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 20:20:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:33,953 INFO L93 Difference]: Finished difference Result 499505 states and 641140 transitions. [2024-10-12 20:20:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-12 20:20:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 20:20:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:34,607 INFO L225 Difference]: With dead ends: 499505 [2024-10-12 20:20:34,607 INFO L226 Difference]: Without dead ends: 407459 [2024-10-12 20:20:34,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2024-10-12 20:20:34,697 INFO L432 NwaCegarLoop]: 982 mSDtfsCounter, 5113 mSDsluCounter, 5471 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 6453 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:34,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 6453 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 20:20:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407459 states.