./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/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.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 c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:26:44,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:26:44,125 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:26:44,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:26:44,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:26:44,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:26:44,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:26:44,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:26:44,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:26:44,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:26:44,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:26:44,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:26:44,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:26:44,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:26:44,157 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:26:44,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:26:44,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:26:44,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:26:44,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:26:44,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:26:44,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:26:44,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:26:44,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:26:44,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:26:44,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:26:44,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:26:44,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:26:44,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:26:44,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:26:44,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:26:44,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:26:44,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:26:44,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:26:44,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:26:44,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:26:44,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:26:44,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:26:44,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:26:44,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:26:44,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:26:44,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:26:44,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:26:44,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce [2024-10-24 01:26:44,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:26:44,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:26:44,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:26:44,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:26:44,379 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:26:44,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:45,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:26:45,762 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:26:45,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:45,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc04a221b/630d32cd6826409fafd90061c086f408/FLAG426799d3b [2024-10-24 01:26:45,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc04a221b/630d32cd6826409fafd90061c086f408 [2024-10-24 01:26:45,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:26:45,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:26:45,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:26:45,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:26:45,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:26:45,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:45" (1/1) ... [2024-10-24 01:26:45,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e08779d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:45, skipping insertion in model container [2024-10-24 01:26:45,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:45" (1/1) ... [2024-10-24 01:26:45,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:26:46,053 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/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2024-10-24 01:26:46,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:26:46,065 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:26:46,123 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/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2024-10-24 01:26:46,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:26:46,146 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:26:46,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46 WrapperNode [2024-10-24 01:26:46,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:26:46,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:26:46,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:26:46,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:26:46,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,186 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 482 [2024-10-24 01:26:46,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:26:46,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:26:46,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:26:46,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:26:46,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,209 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]. [2024-10-24 01:26:46,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:26:46,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:26:46,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:26:46,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:26:46,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (1/1) ... [2024-10-24 01:26:46,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:26:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:26:46,270 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) [2024-10-24 01:26:46,272 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 [2024-10-24 01:26:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:26:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:26:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:26:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:26:46,452 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:26:46,453 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:26:46,896 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-10-24 01:26:46,896 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:26:46,939 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:26:46,940 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:26:46,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:26:46 BoogieIcfgContainer [2024-10-24 01:26:46,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:26:46,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:26:46,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:26:46,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:26:46,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:26:45" (1/3) ... [2024-10-24 01:26:46,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b844530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:26:46, skipping insertion in model container [2024-10-24 01:26:46,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:46" (2/3) ... [2024-10-24 01:26:46,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b844530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:26:46, skipping insertion in model container [2024-10-24 01:26:46,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:26:46" (3/3) ... [2024-10-24 01:26:46,949 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:46,960 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:26:46,960 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:26:47,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:26:47,013 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;@2cc050df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:26:47,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:26:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:26:47,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:47,022 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] [2024-10-24 01:26:47,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:47,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1496607487, now seen corresponding path program 1 times [2024-10-24 01:26:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417823016] [2024-10-24 01:26:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417823016] [2024-10-24 01:26:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417823016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:47,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:47,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:26:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731300202] [2024-10-24 01:26:47,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:47,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:26:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:47,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:26:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:26:47,291 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:47,323 INFO L93 Difference]: Finished difference Result 189 states and 332 transitions. [2024-10-24 01:26:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:26:47,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-24 01:26:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:47,333 INFO L225 Difference]: With dead ends: 189 [2024-10-24 01:26:47,333 INFO L226 Difference]: Without dead ends: 118 [2024-10-24 01:26:47,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:26:47,337 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:47,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-24 01:26:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-10-24 01:26:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 208 transitions. [2024-10-24 01:26:47,369 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 208 transitions. Word has length 34 [2024-10-24 01:26:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:47,369 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 208 transitions. [2024-10-24 01:26:47,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 208 transitions. [2024-10-24 01:26:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:26:47,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:47,371 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] [2024-10-24 01:26:47,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:26:47,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:47,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1109416067, now seen corresponding path program 1 times [2024-10-24 01:26:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:47,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443530272] [2024-10-24 01:26:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:47,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443530272] [2024-10-24 01:26:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443530272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889238905] [2024-10-24 01:26:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:47,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:47,568 INFO L87 Difference]: Start difference. First operand 118 states and 208 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:47,652 INFO L93 Difference]: Finished difference Result 253 states and 439 transitions. [2024-10-24 01:26:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-24 01:26:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:47,654 INFO L225 Difference]: With dead ends: 253 [2024-10-24 01:26:47,654 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 01:26:47,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:47,656 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 113 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:47,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 582 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 01:26:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 118. [2024-10-24 01:26:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.5726495726495726) internal successors, (184), 117 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 184 transitions. [2024-10-24 01:26:47,667 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 184 transitions. Word has length 34 [2024-10-24 01:26:47,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:47,668 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 184 transitions. [2024-10-24 01:26:47,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 184 transitions. [2024-10-24 01:26:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 01:26:47,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:47,671 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] [2024-10-24 01:26:47,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:26:47,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:47,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash 608011210, now seen corresponding path program 1 times [2024-10-24 01:26:47,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:47,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599951610] [2024-10-24 01:26:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:47,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:47,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599951610] [2024-10-24 01:26:47,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599951610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:47,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:47,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:47,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823224950] [2024-10-24 01:26:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:47,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:47,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:47,795 INFO L87 Difference]: Start difference. First operand 118 states and 184 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-10-24 01:26:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:47,858 INFO L93 Difference]: Finished difference Result 240 states and 394 transitions. [2024-10-24 01:26:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:47,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 [2024-10-24 01:26:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:47,860 INFO L225 Difference]: With dead ends: 240 [2024-10-24 01:26:47,862 INFO L226 Difference]: Without dead ends: 174 [2024-10-24 01:26:47,863 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 [2024-10-24 01:26:47,863 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 88 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:47,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 328 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-24 01:26:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-10-24 01:26:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 171 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 274 transitions. [2024-10-24 01:26:47,883 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 274 transitions. Word has length 57 [2024-10-24 01:26:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:47,883 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 274 transitions. [2024-10-24 01:26:47,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-10-24 01:26:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 274 transitions. [2024-10-24 01:26:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 01:26:47,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:47,885 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] [2024-10-24 01:26:47,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:26:47,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:47,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash -681628356, now seen corresponding path program 1 times [2024-10-24 01:26:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882149192] [2024-10-24 01:26:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882149192] [2024-10-24 01:26:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882149192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195168296] [2024-10-24 01:26:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:47,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:47,977 INFO L87 Difference]: Start difference. First operand 172 states and 274 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:47,998 INFO L93 Difference]: Finished difference Result 396 states and 654 transitions. [2024-10-24 01:26:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 01:26:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,000 INFO L225 Difference]: With dead ends: 396 [2024-10-24 01:26:48,000 INFO L226 Difference]: Without dead ends: 276 [2024-10-24 01:26:48,001 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 [2024-10-24 01:26:48,001 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 90 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 336 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-10-24 01:26:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2024-10-24 01:26:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.6373626373626373) internal successors, (447), 273 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 447 transitions. [2024-10-24 01:26:48,015 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 447 transitions. Word has length 59 [2024-10-24 01:26:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:48,015 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 447 transitions. [2024-10-24 01:26:48,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 447 transitions. [2024-10-24 01:26:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:26:48,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:48,018 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] [2024-10-24 01:26:48,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:26:48,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1643525326, now seen corresponding path program 1 times [2024-10-24 01:26:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426359378] [2024-10-24 01:26:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426359378] [2024-10-24 01:26:48,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426359378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:48,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:48,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356807181] [2024-10-24 01:26:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:48,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:48,087 INFO L87 Difference]: Start difference. First operand 274 states and 447 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) [2024-10-24 01:26:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:48,107 INFO L93 Difference]: Finished difference Result 686 states and 1145 transitions. [2024-10-24 01:26:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:48,108 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 [2024-10-24 01:26:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,110 INFO L225 Difference]: With dead ends: 686 [2024-10-24 01:26:48,110 INFO L226 Difference]: Without dead ends: 464 [2024-10-24 01:26:48,111 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 [2024-10-24 01:26:48,114 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 84 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 337 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-10-24 01:26:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2024-10-24 01:26:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.6550976138828633) internal successors, (763), 461 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 763 transitions. [2024-10-24 01:26:48,133 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 763 transitions. Word has length 61 [2024-10-24 01:26:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:48,133 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 763 transitions. [2024-10-24 01:26:48,133 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) [2024-10-24 01:26:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 763 transitions. [2024-10-24 01:26:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:26:48,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:48,134 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] [2024-10-24 01:26:48,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:26:48,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:48,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:48,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1622809984, now seen corresponding path program 1 times [2024-10-24 01:26:48,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:48,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791919637] [2024-10-24 01:26:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:48,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791919637] [2024-10-24 01:26:48,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791919637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:48,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671094225] [2024-10-24 01:26:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:48,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:48,272 INFO L87 Difference]: Start difference. First operand 462 states and 763 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-24 01:26:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:48,426 INFO L93 Difference]: Finished difference Result 1974 states and 3353 transitions. [2024-10-24 01:26:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:26:48,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 [2024-10-24 01:26:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,433 INFO L225 Difference]: With dead ends: 1974 [2024-10-24 01:26:48,434 INFO L226 Difference]: Without dead ends: 1564 [2024-10-24 01:26:48,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:26:48,436 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 654 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1229 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2024-10-24 01:26:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 820. [2024-10-24 01:26:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.6703296703296704) internal successors, (1368), 819 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1368 transitions. [2024-10-24 01:26:48,457 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1368 transitions. Word has length 63 [2024-10-24 01:26:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:48,458 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1368 transitions. [2024-10-24 01:26:48,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-24 01:26:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1368 transitions. [2024-10-24 01:26:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:26:48,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:48,459 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] [2024-10-24 01:26:48,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:26:48,459 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:48,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1169776982, now seen corresponding path program 1 times [2024-10-24 01:26:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772281193] [2024-10-24 01:26:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:48,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772281193] [2024-10-24 01:26:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772281193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528108676] [2024-10-24 01:26:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:48,553 INFO L87 Difference]: Start difference. First operand 820 states and 1368 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:48,625 INFO L93 Difference]: Finished difference Result 2392 states and 4054 transitions. [2024-10-24 01:26:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-24 01:26:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,630 INFO L225 Difference]: With dead ends: 2392 [2024-10-24 01:26:48,630 INFO L226 Difference]: Without dead ends: 1624 [2024-10-24 01:26:48,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:48,634 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 327 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 592 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2024-10-24 01:26:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1213. [2024-10-24 01:26:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.6773927392739274) internal successors, (2033), 1212 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2033 transitions. [2024-10-24 01:26:48,672 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2033 transitions. Word has length 64 [2024-10-24 01:26:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:48,673 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 2033 transitions. [2024-10-24 01:26:48,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2033 transitions. [2024-10-24 01:26:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:26:48,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:48,675 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:48,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:26:48,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:48,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1742180702, now seen corresponding path program 1 times [2024-10-24 01:26:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550862275] [2024-10-24 01:26:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550862275] [2024-10-24 01:26:48,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550862275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:48,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:48,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775949913] [2024-10-24 01:26:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:48,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:48,758 INFO L87 Difference]: Start difference. First operand 1213 states and 2033 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:48,792 INFO L93 Difference]: Finished difference Result 2698 states and 4573 transitions. [2024-10-24 01:26:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:48,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:26:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,798 INFO L225 Difference]: With dead ends: 2698 [2024-10-24 01:26:48,798 INFO L226 Difference]: Without dead ends: 1855 [2024-10-24 01:26:48,799 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 [2024-10-24 01:26:48,800 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 97 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 415 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-10-24 01:26:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1853. [2024-10-24 01:26:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 1.6776457883369331) internal successors, (3107), 1852 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3107 transitions. [2024-10-24 01:26:48,841 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3107 transitions. Word has length 65 [2024-10-24 01:26:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:48,842 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 3107 transitions. [2024-10-24 01:26:48,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3107 transitions. [2024-10-24 01:26:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:26:48,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:48,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:48,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:26:48,843 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:48,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2044201662, now seen corresponding path program 1 times [2024-10-24 01:26:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:48,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397262349] [2024-10-24 01:26:48,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:48,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397262349] [2024-10-24 01:26:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397262349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:48,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481208503] [2024-10-24 01:26:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:48,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:48,905 INFO L87 Difference]: Start difference. First operand 1853 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:48,947 INFO L93 Difference]: Finished difference Result 3657 states and 6146 transitions. [2024-10-24 01:26:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:26:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:48,955 INFO L225 Difference]: With dead ends: 3657 [2024-10-24 01:26:48,956 INFO L226 Difference]: Without dead ends: 2619 [2024-10-24 01:26:48,957 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 [2024-10-24 01:26:48,959 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 91 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:48,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 413 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2024-10-24 01:26:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2617. [2024-10-24 01:26:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 2616 states have (on average 1.6670489296636086) internal successors, (4361), 2616 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 4361 transitions. [2024-10-24 01:26:49,010 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 4361 transitions. Word has length 65 [2024-10-24 01:26:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:49,011 INFO L471 AbstractCegarLoop]: Abstraction has 2617 states and 4361 transitions. [2024-10-24 01:26:49,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 4361 transitions. [2024-10-24 01:26:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:26:49,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:49,011 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:49,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:26:49,012 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:49,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:49,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1846078761, now seen corresponding path program 1 times [2024-10-24 01:26:49,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:49,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216750617] [2024-10-24 01:26:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216750617] [2024-10-24 01:26:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216750617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:49,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:49,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574952632] [2024-10-24 01:26:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:49,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:49,095 INFO L87 Difference]: Start difference. First operand 2617 states and 4361 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:49,204 INFO L93 Difference]: Finished difference Result 8288 states and 13864 transitions. [2024-10-24 01:26:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:26:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:49,219 INFO L225 Difference]: With dead ends: 8288 [2024-10-24 01:26:49,219 INFO L226 Difference]: Without dead ends: 5733 [2024-10-24 01:26:49,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:49,222 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 326 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:49,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 584 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2024-10-24 01:26:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 4156. [2024-10-24 01:26:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 4155 states have (on average 1.6577617328519856) internal successors, (6888), 4155 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 6888 transitions. [2024-10-24 01:26:49,293 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 6888 transitions. Word has length 65 [2024-10-24 01:26:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:49,294 INFO L471 AbstractCegarLoop]: Abstraction has 4156 states and 6888 transitions. [2024-10-24 01:26:49,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 6888 transitions. [2024-10-24 01:26:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:26:49,294 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:49,294 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:49,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:26:49,295 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:49,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1317473310, now seen corresponding path program 1 times [2024-10-24 01:26:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936364296] [2024-10-24 01:26:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936364296] [2024-10-24 01:26:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936364296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:49,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:49,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:49,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777738695] [2024-10-24 01:26:49,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:49,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:49,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:49,339 INFO L87 Difference]: Start difference. First operand 4156 states and 6888 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:49,397 INFO L93 Difference]: Finished difference Result 8308 states and 13773 transitions. [2024-10-24 01:26:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:26:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:49,413 INFO L225 Difference]: With dead ends: 8308 [2024-10-24 01:26:49,414 INFO L226 Difference]: Without dead ends: 5886 [2024-10-24 01:26:49,418 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 [2024-10-24 01:26:49,418 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 85 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:49,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 402 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2024-10-24 01:26:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5884. [2024-10-24 01:26:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5883 states have (on average 1.6420193778684344) internal successors, (9660), 5883 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9660 transitions. [2024-10-24 01:26:49,571 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9660 transitions. Word has length 65 [2024-10-24 01:26:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:49,571 INFO L471 AbstractCegarLoop]: Abstraction has 5884 states and 9660 transitions. [2024-10-24 01:26:49,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9660 transitions. [2024-10-24 01:26:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 01:26:49,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:49,572 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] [2024-10-24 01:26:49,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:26:49,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:49,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1342049183, now seen corresponding path program 1 times [2024-10-24 01:26:49,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:49,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742700436] [2024-10-24 01:26:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:49,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742700436] [2024-10-24 01:26:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742700436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:49,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040598515] [2024-10-24 01:26:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:49,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:49,629 INFO L87 Difference]: Start difference. First operand 5884 states and 9660 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-10-24 01:26:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:49,785 INFO L93 Difference]: Finished difference Result 18554 states and 30526 transitions. [2024-10-24 01:26:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:49,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 [2024-10-24 01:26:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:49,813 INFO L225 Difference]: With dead ends: 18554 [2024-10-24 01:26:49,814 INFO L226 Difference]: Without dead ends: 12740 [2024-10-24 01:26:49,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:49,824 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 324 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:49,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 586 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12740 states. [2024-10-24 01:26:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12740 to 9269. [2024-10-24 01:26:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9269 states, 9268 states have (on average 1.6298014674147605) internal successors, (15105), 9268 states have internal predecessors, (15105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 15105 transitions. [2024-10-24 01:26:50,049 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 15105 transitions. Word has length 66 [2024-10-24 01:26:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:50,049 INFO L471 AbstractCegarLoop]: Abstraction has 9269 states and 15105 transitions. [2024-10-24 01:26:50,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-10-24 01:26:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 15105 transitions. [2024-10-24 01:26:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 01:26:50,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:50,050 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] [2024-10-24 01:26:50,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:26:50,050 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:50,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -257241593, now seen corresponding path program 1 times [2024-10-24 01:26:50,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839663771] [2024-10-24 01:26:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839663771] [2024-10-24 01:26:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839663771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30537367] [2024-10-24 01:26:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:50,200 INFO L87 Difference]: Start difference. First operand 9269 states and 15105 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:50,392 INFO L93 Difference]: Finished difference Result 18470 states and 30115 transitions. [2024-10-24 01:26:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:26:50,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-10-24 01:26:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:50,407 INFO L225 Difference]: With dead ends: 18470 [2024-10-24 01:26:50,407 INFO L226 Difference]: Without dead ends: 9271 [2024-10-24 01:26:50,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:26:50,417 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 253 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 480 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 [2024-10-24 01:26:50,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 480 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2024-10-24 01:26:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 9269. [2024-10-24 01:26:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9269 states, 9268 states have (on average 1.6163141993957704) internal successors, (14980), 9268 states have internal predecessors, (14980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 14980 transitions. [2024-10-24 01:26:50,605 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 14980 transitions. Word has length 68 [2024-10-24 01:26:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:50,605 INFO L471 AbstractCegarLoop]: Abstraction has 9269 states and 14980 transitions. [2024-10-24 01:26:50,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 14980 transitions. [2024-10-24 01:26:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:26:50,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:50,606 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] [2024-10-24 01:26:50,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:26:50,607 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:50,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1566628870, now seen corresponding path program 1 times [2024-10-24 01:26:50,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:50,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611692896] [2024-10-24 01:26:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:50,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:50,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611692896] [2024-10-24 01:26:50,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611692896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:50,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:50,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407956058] [2024-10-24 01:26:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:50,722 INFO L87 Difference]: Start difference. First operand 9269 states and 14980 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:50,929 INFO L93 Difference]: Finished difference Result 26562 states and 43067 transitions. [2024-10-24 01:26:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:26:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-24 01:26:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:50,954 INFO L225 Difference]: With dead ends: 26562 [2024-10-24 01:26:50,954 INFO L226 Difference]: Without dead ends: 17363 [2024-10-24 01:26:50,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:26:50,967 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 83 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:50,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 642 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17363 states. [2024-10-24 01:26:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17363 to 17361. [2024-10-24 01:26:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 1.600979262672811) internal successors, (27793), 17360 states have internal predecessors, (27793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 27793 transitions. [2024-10-24 01:26:51,275 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 27793 transitions. Word has length 71 [2024-10-24 01:26:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:51,275 INFO L471 AbstractCegarLoop]: Abstraction has 17361 states and 27793 transitions. [2024-10-24 01:26:51,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 27793 transitions. [2024-10-24 01:26:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:26:51,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:51,276 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] [2024-10-24 01:26:51,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:26:51,276 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1306335486, now seen corresponding path program 1 times [2024-10-24 01:26:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166975904] [2024-10-24 01:26:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166975904] [2024-10-24 01:26:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166975904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404275232] [2024-10-24 01:26:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:51,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:51,390 INFO L87 Difference]: Start difference. First operand 17361 states and 27793 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-10-24 01:26:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:51,511 INFO L93 Difference]: Finished difference Result 18087 states and 28880 transitions. [2024-10-24 01:26:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 [2024-10-24 01:26:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:51,539 INFO L225 Difference]: With dead ends: 18087 [2024-10-24 01:26:51,539 INFO L226 Difference]: Without dead ends: 18085 [2024-10-24 01:26:51,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:51,545 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:51,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 527 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18085 states. [2024-10-24 01:26:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18085 to 18085. [2024-10-24 01:26:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18085 states, 18084 states have (on average 1.5764211457642114) internal successors, (28508), 18084 states have internal predecessors, (28508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18085 states to 18085 states and 28508 transitions. [2024-10-24 01:26:51,874 INFO L78 Accepts]: Start accepts. Automaton has 18085 states and 28508 transitions. Word has length 72 [2024-10-24 01:26:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:51,874 INFO L471 AbstractCegarLoop]: Abstraction has 18085 states and 28508 transitions. [2024-10-24 01:26:51,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-10-24 01:26:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18085 states and 28508 transitions. [2024-10-24 01:26:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:26:51,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:51,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:51,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:26:51,876 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:51,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash -295342585, now seen corresponding path program 1 times [2024-10-24 01:26:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991938139] [2024-10-24 01:26:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:26:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:52,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991938139] [2024-10-24 01:26:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991938139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651257432] [2024-10-24 01:26:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:52,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:52,067 INFO L87 Difference]: Start difference. First operand 18085 states and 28508 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:52,469 INFO L93 Difference]: Finished difference Result 44621 states and 70612 transitions. [2024-10-24 01:26:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:26:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-24 01:26:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:52,535 INFO L225 Difference]: With dead ends: 44621 [2024-10-24 01:26:52,536 INFO L226 Difference]: Without dead ends: 35779 [2024-10-24 01:26:52,554 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 [2024-10-24 01:26:52,554 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 412 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:52,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 785 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35779 states. [2024-10-24 01:26:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35779 to 27877. [2024-10-24 01:26:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27877 states, 27876 states have (on average 1.5732529774716602) internal successors, (43856), 27876 states have internal predecessors, (43856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27877 states to 27877 states and 43856 transitions. [2024-10-24 01:26:53,161 INFO L78 Accepts]: Start accepts. Automaton has 27877 states and 43856 transitions. Word has length 97 [2024-10-24 01:26:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:53,161 INFO L471 AbstractCegarLoop]: Abstraction has 27877 states and 43856 transitions. [2024-10-24 01:26:53,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27877 states and 43856 transitions. [2024-10-24 01:26:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:26:53,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:53,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:53,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:26:53,163 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:53,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -597363545, now seen corresponding path program 1 times [2024-10-24 01:26:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775888552] [2024-10-24 01:26:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:26:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775888552] [2024-10-24 01:26:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775888552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:53,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315779737] [2024-10-24 01:26:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:53,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:53,264 INFO L87 Difference]: Start difference. First operand 27877 states and 43856 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:53,685 INFO L93 Difference]: Finished difference Result 50087 states and 79256 transitions. [2024-10-24 01:26:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:26:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-24 01:26:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:53,736 INFO L225 Difference]: With dead ends: 50087 [2024-10-24 01:26:53,736 INFO L226 Difference]: Without dead ends: 41475 [2024-10-24 01:26:53,750 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 [2024-10-24 01:26:53,750 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 408 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:53,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 833 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41475 states. [2024-10-24 01:26:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41475 to 37901. [2024-10-24 01:26:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37901 states, 37900 states have (on average 1.5747757255936676) internal successors, (59684), 37900 states have internal predecessors, (59684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37901 states to 37901 states and 59684 transitions. [2024-10-24 01:26:54,384 INFO L78 Accepts]: Start accepts. Automaton has 37901 states and 59684 transitions. Word has length 97 [2024-10-24 01:26:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:54,384 INFO L471 AbstractCegarLoop]: Abstraction has 37901 states and 59684 transitions. [2024-10-24 01:26:54,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37901 states and 59684 transitions. [2024-10-24 01:26:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:26:54,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:54,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:54,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:26:54,386 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:54,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash 129364807, now seen corresponding path program 1 times [2024-10-24 01:26:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:54,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083472407] [2024-10-24 01:26:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:26:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083472407] [2024-10-24 01:26:54,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083472407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:54,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:54,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:26:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146896084] [2024-10-24 01:26:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:54,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:26:54,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:26:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:26:54,471 INFO L87 Difference]: Start difference. First operand 37901 states and 59684 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:54,944 INFO L93 Difference]: Finished difference Result 53563 states and 84748 transitions. [2024-10-24 01:26:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:26:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-24 01:26:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:55,001 INFO L225 Difference]: With dead ends: 53563 [2024-10-24 01:26:55,002 INFO L226 Difference]: Without dead ends: 44951 [2024-10-24 01:26:55,018 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 [2024-10-24 01:26:55,020 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 419 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:55,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 790 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:26:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44951 states. [2024-10-24 01:26:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44951 to 43505. [2024-10-24 01:26:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43505 states, 43504 states have (on average 1.576682603898492) internal successors, (68592), 43504 states have internal predecessors, (68592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43505 states to 43505 states and 68592 transitions. [2024-10-24 01:26:55,904 INFO L78 Accepts]: Start accepts. Automaton has 43505 states and 68592 transitions. Word has length 97 [2024-10-24 01:26:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:55,906 INFO L471 AbstractCegarLoop]: Abstraction has 43505 states and 68592 transitions. [2024-10-24 01:26:55,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43505 states and 68592 transitions. [2024-10-24 01:26:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 01:26:55,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:55,908 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:55,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:26:55,908 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:55,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash -628406609, now seen corresponding path program 1 times [2024-10-24 01:26:55,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:55,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098302088] [2024-10-24 01:26:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:26:55,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:55,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098302088] [2024-10-24 01:26:55,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098302088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:55,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:55,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:26:55,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966184427] [2024-10-24 01:26:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:55,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:26:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:26:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:55,989 INFO L87 Difference]: Start difference. First operand 43505 states and 68592 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:56,572 INFO L93 Difference]: Finished difference Result 71148 states and 112821 transitions. [2024-10-24 01:26:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:26:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-10-24 01:26:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:56,639 INFO L225 Difference]: With dead ends: 71148 [2024-10-24 01:26:56,639 INFO L226 Difference]: Without dead ends: 56610 [2024-10-24 01:26:56,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:26:56,662 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 178 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:56,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 546 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56610 states. [2024-10-24 01:26:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56610 to 55166. [2024-10-24 01:26:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55166 states, 55165 states have (on average 1.5767606272092813) internal successors, (86982), 55165 states have internal predecessors, (86982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55166 states to 55166 states and 86982 transitions. [2024-10-24 01:26:57,698 INFO L78 Accepts]: Start accepts. Automaton has 55166 states and 86982 transitions. Word has length 98 [2024-10-24 01:26:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:57,698 INFO L471 AbstractCegarLoop]: Abstraction has 55166 states and 86982 transitions. [2024-10-24 01:26:57,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 55166 states and 86982 transitions. [2024-10-24 01:26:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 01:26:57,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:57,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:26:57,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:26:57,701 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:57,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1446055059, now seen corresponding path program 1 times [2024-10-24 01:26:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311861912] [2024-10-24 01:26:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:26:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311861912] [2024-10-24 01:26:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311861912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:57,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:26:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24105207] [2024-10-24 01:26:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:57,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:26:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:26:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:26:57,767 INFO L87 Difference]: Start difference. First operand 55166 states and 86982 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:26:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:58,664 INFO L93 Difference]: Finished difference Result 119532 states and 189148 transitions. [2024-10-24 01:26:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:26:58,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-10-24 01:26:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:58,804 INFO L225 Difference]: With dead ends: 119532 [2024-10-24 01:26:58,804 INFO L226 Difference]: Without dead ends: 93438 [2024-10-24 01:26:58,830 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 [2024-10-24 01:26:58,830 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 74 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:58,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 333 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93438 states. [2024-10-24 01:27:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93438 to 93160. [2024-10-24 01:27:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93160 states, 93159 states have (on average 1.576219152202149) internal successors, (146839), 93159 states have internal predecessors, (146839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93160 states to 93160 states and 146839 transitions. [2024-10-24 01:27:00,521 INFO L78 Accepts]: Start accepts. Automaton has 93160 states and 146839 transitions. Word has length 98 [2024-10-24 01:27:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:00,521 INFO L471 AbstractCegarLoop]: Abstraction has 93160 states and 146839 transitions. [2024-10-24 01:27:00,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93160 states and 146839 transitions. [2024-10-24 01:27:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 01:27:00,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:00,523 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:00,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:27:00,523 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:00,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1681093945, now seen corresponding path program 1 times [2024-10-24 01:27:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:00,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492646950] [2024-10-24 01:27:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492646950] [2024-10-24 01:27:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492646950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558555575] [2024-10-24 01:27:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:00,568 INFO L87 Difference]: Start difference. First operand 93160 states and 146839 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:02,472 INFO L93 Difference]: Finished difference Result 277187 states and 435977 transitions. [2024-10-24 01:27:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-24 01:27:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:02,806 INFO L225 Difference]: With dead ends: 277187 [2024-10-24 01:27:02,806 INFO L226 Difference]: Without dead ends: 184091 [2024-10-24 01:27:02,901 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 [2024-10-24 01:27:02,901 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 118 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:02,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 404 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184091 states. [2024-10-24 01:27:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184091 to 184089. [2024-10-24 01:27:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184089 states, 184088 states have (on average 1.5591184650819174) internal successors, (287015), 184088 states have internal predecessors, (287015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184089 states to 184089 states and 287015 transitions. [2024-10-24 01:27:06,502 INFO L78 Accepts]: Start accepts. Automaton has 184089 states and 287015 transitions. Word has length 99 [2024-10-24 01:27:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:06,502 INFO L471 AbstractCegarLoop]: Abstraction has 184089 states and 287015 transitions. [2024-10-24 01:27:06,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 184089 states and 287015 transitions. [2024-10-24 01:27:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 01:27:06,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:06,505 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:06,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:27:06,506 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:06,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 644151905, now seen corresponding path program 1 times [2024-10-24 01:27:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956228486] [2024-10-24 01:27:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:06,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956228486] [2024-10-24 01:27:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956228486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:06,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769843615] [2024-10-24 01:27:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:06,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:06,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:06,555 INFO L87 Difference]: Start difference. First operand 184089 states and 287015 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:10,438 INFO L93 Difference]: Finished difference Result 547720 states and 852038 transitions. [2024-10-24 01:27:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-24 01:27:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:11,053 INFO L225 Difference]: With dead ends: 547720 [2024-10-24 01:27:11,053 INFO L226 Difference]: Without dead ends: 363750 [2024-10-24 01:27:11,166 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 [2024-10-24 01:27:11,168 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 137 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:11,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 431 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363750 states. [2024-10-24 01:27:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363750 to 363748. [2024-10-24 01:27:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363748 states, 363747 states have (on average 1.5416209618223655) internal successors, (560760), 363747 states have internal predecessors, (560760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363748 states to 363748 states and 560760 transitions. [2024-10-24 01:27:18,680 INFO L78 Accepts]: Start accepts. Automaton has 363748 states and 560760 transitions. Word has length 99 [2024-10-24 01:27:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,681 INFO L471 AbstractCegarLoop]: Abstraction has 363748 states and 560760 transitions. [2024-10-24 01:27:18,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 363748 states and 560760 transitions. [2024-10-24 01:27:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 01:27:18,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,691 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:18,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:27:18,691 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1953318135, now seen corresponding path program 1 times [2024-10-24 01:27:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688885766] [2024-10-24 01:27:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688885766] [2024-10-24 01:27:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688885766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:18,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:18,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:18,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186911562] [2024-10-24 01:27:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:18,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:18,804 INFO L87 Difference]: Start difference. First operand 363748 states and 560760 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:27:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:22,882 INFO L93 Difference]: Finished difference Result 675496 states and 1042722 transitions. [2024-10-24 01:27:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:22,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-24 01:27:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:23,561 INFO L225 Difference]: With dead ends: 675496 [2024-10-24 01:27:23,562 INFO L226 Difference]: Without dead ends: 311974 [2024-10-24 01:27:24,168 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 [2024-10-24 01:27:24,168 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 70 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:24,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 386 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311974 states.