./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:17:53,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:17:53,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:17:53,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:17:53,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:17:53,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:17:53,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:17:53,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:17:53,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:17:53,217 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:17:53,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:17:53,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:17:53,219 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:17:53,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:17:53,220 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:17:53,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:17:53,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:17:53,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:17:53,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:17:53,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:17:53,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:17:53,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:17:53,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:17:53,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:17:53,226 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:17:53,226 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:17:53,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:17:53,227 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:17:53,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:17:53,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:17:53,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:17:53,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:17:53,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:17:53,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:17:53,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:17:53,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:17:53,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:17:53,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:17:53,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:17:53,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:17:53,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:17:53,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:17:53,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 [2024-10-12 20:17:53,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:17:53,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:17:53,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:17:53,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:17:53,531 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:17:53,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:54,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:17:55,245 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:17:55,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:55,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548fc8f7e/f11a5e28387042b0a5310ae7b9a83c58/FLAGe31c88f9b [2024-10-12 20:17:55,280 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548fc8f7e/f11a5e28387042b0a5310ae7b9a83c58 [2024-10-12 20:17:55,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:17:55,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:17:55,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:17:55,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:17:55,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:17:55,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:55,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50808173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55, skipping insertion in model container [2024-10-12 20:17:55,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:55,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:17:55,701 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-10-12 20:17:55,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:17:55,798 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:17:55,884 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-10-12 20:17:55,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:17:55,958 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:17:55,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55 WrapperNode [2024-10-12 20:17:55,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:17:55,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:17:55,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:17:55,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:17:55,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:55,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,062 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1367 [2024-10-12 20:17:56,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:17:56,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:17:56,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:17:56,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:17:56,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,131 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 20:17:56,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:17:56,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:17:56,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:17:56,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:17:56,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (1/1) ... [2024-10-12 20:17:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:17:56,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:17:56,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 20:17:56,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 20:17:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:17:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:17:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:17:56,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:17:56,494 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:17:56,496 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:17:57,738 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-10-12 20:17:57,739 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:17:57,817 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:17:57,817 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 20:17:57,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:57 BoogieIcfgContainer [2024-10-12 20:17:57,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:17:57,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:17:57,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:17:57,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:17:57,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:17:55" (1/3) ... [2024-10-12 20:17:57,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1e5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:57, skipping insertion in model container [2024-10-12 20:17:57,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:55" (2/3) ... [2024-10-12 20:17:57,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1e5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:57, skipping insertion in model container [2024-10-12 20:17:57,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:57" (3/3) ... [2024-10-12 20:17:57,831 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:57,852 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:17:57,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:17:58,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:17:58,020 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;@3dfa8afe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:17:58,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:17:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8012422360248448) internal successors, (580), 323 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:17:58,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:58,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:17:58,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:58,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1684200636, now seen corresponding path program 1 times [2024-10-12 20:17:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230267462] [2024-10-12 20:17:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:17:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230267462] [2024-10-12 20:17:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230267462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:58,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624028130] [2024-10-12 20:17:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:58,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:58,827 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8012422360248448) internal successors, (580), 323 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:58,981 INFO L93 Difference]: Finished difference Result 585 states and 1017 transitions. [2024-10-12 20:17:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:58,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-12 20:17:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:59,001 INFO L225 Difference]: With dead ends: 585 [2024-10-12 20:17:59,002 INFO L226 Difference]: Without dead ends: 445 [2024-10-12 20:17:59,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:59,009 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 231 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:59,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1066 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-12 20:17:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 442. [2024-10-12 20:17:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.6621315192743764) internal successors, (733), 441 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 733 transitions. [2024-10-12 20:17:59,071 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 733 transitions. Word has length 109 [2024-10-12 20:17:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:59,072 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 733 transitions. [2024-10-12 20:17:59,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 733 transitions. [2024-10-12 20:17:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 20:17:59,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:59,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:17:59,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:17:59,080 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:59,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 64332195, now seen corresponding path program 1 times [2024-10-12 20:17:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730232935] [2024-10-12 20:17:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:17:59,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:59,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730232935] [2024-10-12 20:17:59,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730232935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:59,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:59,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578728927] [2024-10-12 20:17:59,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:59,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:59,401 INFO L87 Difference]: Start difference. First operand 442 states and 733 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:59,460 INFO L93 Difference]: Finished difference Result 932 states and 1549 transitions. [2024-10-12 20:17:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:59,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-12 20:17:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:59,466 INFO L225 Difference]: With dead ends: 932 [2024-10-12 20:17:59,467 INFO L226 Difference]: Without dead ends: 678 [2024-10-12 20:17:59,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:59,472 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:59,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1026 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-10-12 20:17:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 674. [2024-10-12 20:17:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.6597325408618129) internal successors, (1117), 673 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1117 transitions. [2024-10-12 20:17:59,513 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1117 transitions. Word has length 112 [2024-10-12 20:17:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:59,515 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1117 transitions. [2024-10-12 20:17:59,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1117 transitions. [2024-10-12 20:17:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-12 20:17:59,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:59,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:17:59,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:17:59,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:59,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash 338851648, now seen corresponding path program 1 times [2024-10-12 20:17:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55324505] [2024-10-12 20:17:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:17:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55324505] [2024-10-12 20:17:59,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55324505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:59,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508627669] [2024-10-12 20:17:59,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:59,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:59,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:59,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:59,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:59,761 INFO L87 Difference]: Start difference. First operand 674 states and 1117 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:59,809 INFO L93 Difference]: Finished difference Result 1610 states and 2667 transitions. [2024-10-12 20:17:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-10-12 20:17:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:59,816 INFO L225 Difference]: With dead ends: 1610 [2024-10-12 20:17:59,816 INFO L226 Difference]: Without dead ends: 1124 [2024-10-12 20:17:59,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:59,820 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:59,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1027 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-10-12 20:17:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1118. [2024-10-12 20:17:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 1.6517457475380484) internal successors, (1845), 1117 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1845 transitions. [2024-10-12 20:17:59,859 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1845 transitions. Word has length 115 [2024-10-12 20:17:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:59,862 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1845 transitions. [2024-10-12 20:17:59,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1845 transitions. [2024-10-12 20:17:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-12 20:17:59,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:59,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:17:59,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:17:59,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:59,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2139714335, now seen corresponding path program 1 times [2024-10-12 20:17:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674675848] [2024-10-12 20:17:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:59,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674675848] [2024-10-12 20:18:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674675848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:00,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:18:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33596816] [2024-10-12 20:18:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:00,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:18:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:18:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:00,118 INFO L87 Difference]: Start difference. First operand 1118 states and 1845 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:00,190 INFO L93 Difference]: Finished difference Result 2906 states and 4783 transitions. [2024-10-12 20:18:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:18:00,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-12 20:18:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:00,207 INFO L225 Difference]: With dead ends: 2906 [2024-10-12 20:18:00,207 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 20:18:00,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:00,212 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:00,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1028 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 20:18:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1966. [2024-10-12 20:18:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 1.6391857506361323) internal successors, (3221), 1965 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3221 transitions. [2024-10-12 20:18:00,268 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3221 transitions. Word has length 118 [2024-10-12 20:18:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:00,268 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3221 transitions. [2024-10-12 20:18:00,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3221 transitions. [2024-10-12 20:18:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 20:18:00,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:00,273 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:00,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:18:00,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:00,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash 949471684, now seen corresponding path program 1 times [2024-10-12 20:18:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460319901] [2024-10-12 20:18:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460319901] [2024-10-12 20:18:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460319901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:00,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246898277] [2024-10-12 20:18:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:00,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:00,570 INFO L87 Difference]: Start difference. First operand 1966 states and 3221 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:00,938 INFO L93 Difference]: Finished difference Result 10222 states and 16897 transitions. [2024-10-12 20:18:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 20:18:00,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-10-12 20:18:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:00,975 INFO L225 Difference]: With dead ends: 10222 [2024-10-12 20:18:00,976 INFO L226 Difference]: Without dead ends: 8444 [2024-10-12 20:18:00,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 20:18:00,986 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 2115 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:00,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 3918 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:18:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2024-10-12 20:18:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 3624. [2024-10-12 20:18:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.638421197902291) internal successors, (5936), 3623 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5936 transitions. [2024-10-12 20:18:01,137 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5936 transitions. Word has length 121 [2024-10-12 20:18:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:01,137 INFO L471 AbstractCegarLoop]: Abstraction has 3624 states and 5936 transitions. [2024-10-12 20:18:01,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5936 transitions. [2024-10-12 20:18:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 20:18:01,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:01,141 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:01,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:18:01,142 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:01,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash -698210882, now seen corresponding path program 1 times [2024-10-12 20:18:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344689627] [2024-10-12 20:18:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344689627] [2024-10-12 20:18:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344689627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:01,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:18:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125612234] [2024-10-12 20:18:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:01,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:18:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:18:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:18:01,335 INFO L87 Difference]: Start difference. First operand 3624 states and 5936 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:01,460 INFO L93 Difference]: Finished difference Result 10604 states and 17474 transitions. [2024-10-12 20:18:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:18:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2024-10-12 20:18:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:01,489 INFO L225 Difference]: With dead ends: 10604 [2024-10-12 20:18:01,490 INFO L226 Difference]: Without dead ends: 7168 [2024-10-12 20:18:01,497 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 [2024-10-12 20:18:01,498 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 658 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:01,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1603 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2024-10-12 20:18:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 5379. [2024-10-12 20:18:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.6418743027147638) internal successors, (8830), 5378 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8830 transitions. [2024-10-12 20:18:01,678 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8830 transitions. Word has length 122 [2024-10-12 20:18:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:01,679 INFO L471 AbstractCegarLoop]: Abstraction has 5379 states and 8830 transitions. [2024-10-12 20:18:01,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8830 transitions. [2024-10-12 20:18:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-12 20:18:01,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:01,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:01,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:18:01,684 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:01,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -232204853, now seen corresponding path program 1 times [2024-10-12 20:18:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538551174] [2024-10-12 20:18:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538551174] [2024-10-12 20:18:01,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538551174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:01,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:01,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:18:01,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466282713] [2024-10-12 20:18:01,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:01,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:18:01,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:01,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:18:01,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:18:01,852 INFO L87 Difference]: Start difference. First operand 5379 states and 8830 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:01,991 INFO L93 Difference]: Finished difference Result 15776 states and 25980 transitions. [2024-10-12 20:18:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:18:01,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-10-12 20:18:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:02,041 INFO L225 Difference]: With dead ends: 15776 [2024-10-12 20:18:02,042 INFO L226 Difference]: Without dead ends: 10585 [2024-10-12 20:18:02,054 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 [2024-10-12 20:18:02,055 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 656 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:02,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1651 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2024-10-12 20:18:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 7958. [2024-10-12 20:18:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7958 states, 7957 states have (on average 1.6406937287922585) internal successors, (13055), 7957 states have internal predecessors, (13055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7958 states to 7958 states and 13055 transitions. [2024-10-12 20:18:02,290 INFO L78 Accepts]: Start accepts. Automaton has 7958 states and 13055 transitions. Word has length 123 [2024-10-12 20:18:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:02,290 INFO L471 AbstractCegarLoop]: Abstraction has 7958 states and 13055 transitions. [2024-10-12 20:18:02,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7958 states and 13055 transitions. [2024-10-12 20:18:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:18:02,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:02,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:02,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:18:02,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:02,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1393040642, now seen corresponding path program 1 times [2024-10-12 20:18:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:02,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560566662] [2024-10-12 20:18:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:02,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560566662] [2024-10-12 20:18:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560566662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:18:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801585578] [2024-10-12 20:18:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:18:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:18:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:02,412 INFO L87 Difference]: Start difference. First operand 7958 states and 13055 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:02,481 INFO L93 Difference]: Finished difference Result 15655 states and 25738 transitions. [2024-10-12 20:18:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:18:02,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-12 20:18:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:02,504 INFO L225 Difference]: With dead ends: 15655 [2024-10-12 20:18:02,505 INFO L226 Difference]: Without dead ends: 11379 [2024-10-12 20:18:02,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:02,516 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 193 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:02,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2024-10-12 20:18:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 11377. [2024-10-12 20:18:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11377 states, 11376 states have (on average 1.6374824191279886) internal successors, (18628), 11376 states have internal predecessors, (18628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11377 states to 11377 states and 18628 transitions. [2024-10-12 20:18:02,780 INFO L78 Accepts]: Start accepts. Automaton has 11377 states and 18628 transitions. Word has length 124 [2024-10-12 20:18:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:02,781 INFO L471 AbstractCegarLoop]: Abstraction has 11377 states and 18628 transitions. [2024-10-12 20:18:02,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 11377 states and 18628 transitions. [2024-10-12 20:18:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:18:02,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:02,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:02,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:18:02,785 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:02,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1101994650, now seen corresponding path program 1 times [2024-10-12 20:18:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:02,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858765274] [2024-10-12 20:18:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:02,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:02,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858765274] [2024-10-12 20:18:02,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858765274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:02,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:02,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:18:02,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762906014] [2024-10-12 20:18:02,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:02,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:18:02,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:18:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:02,899 INFO L87 Difference]: Start difference. First operand 11377 states and 18628 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:02,984 INFO L93 Difference]: Finished difference Result 22087 states and 36262 transitions. [2024-10-12 20:18:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:18:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-12 20:18:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:03,019 INFO L225 Difference]: With dead ends: 22087 [2024-10-12 20:18:03,020 INFO L226 Difference]: Without dead ends: 16095 [2024-10-12 20:18:03,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:03,036 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 187 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:03,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1092 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2024-10-12 20:18:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 16093. [2024-10-12 20:18:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16093 states, 16092 states have (on average 1.6341039025602784) internal successors, (26296), 16092 states have internal predecessors, (26296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16093 states to 16093 states and 26296 transitions. [2024-10-12 20:18:03,440 INFO L78 Accepts]: Start accepts. Automaton has 16093 states and 26296 transitions. Word has length 124 [2024-10-12 20:18:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:03,441 INFO L471 AbstractCegarLoop]: Abstraction has 16093 states and 26296 transitions. [2024-10-12 20:18:03,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 16093 states and 26296 transitions. [2024-10-12 20:18:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:18:03,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:03,445 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:03,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:18:03,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:03,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:03,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1333638181, now seen corresponding path program 1 times [2024-10-12 20:18:03,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:03,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316504484] [2024-10-12 20:18:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316504484] [2024-10-12 20:18:03,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316504484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:18:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519727339] [2024-10-12 20:18:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:03,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:18:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:18:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:18:03,654 INFO L87 Difference]: Start difference. First operand 16093 states and 26296 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:04,030 INFO L93 Difference]: Finished difference Result 50959 states and 83571 transitions. [2024-10-12 20:18:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:18:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-12 20:18:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:04,125 INFO L225 Difference]: With dead ends: 50959 [2024-10-12 20:18:04,125 INFO L226 Difference]: Without dead ends: 35473 [2024-10-12 20:18:04,158 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 [2024-10-12 20:18:04,159 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 654 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:04,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1548 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35473 states. [2024-10-12 20:18:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35473 to 25731. [2024-10-12 20:18:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25731 states, 25730 states have (on average 1.632568985619899) internal successors, (42006), 25730 states have internal predecessors, (42006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25731 states to 25731 states and 42006 transitions. [2024-10-12 20:18:04,714 INFO L78 Accepts]: Start accepts. Automaton has 25731 states and 42006 transitions. Word has length 124 [2024-10-12 20:18:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:04,714 INFO L471 AbstractCegarLoop]: Abstraction has 25731 states and 42006 transitions. [2024-10-12 20:18:04,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 25731 states and 42006 transitions. [2024-10-12 20:18:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:18:04,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:04,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:04,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:18:04,718 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:04,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1933285482, now seen corresponding path program 1 times [2024-10-12 20:18:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:04,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328436710] [2024-10-12 20:18:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:04,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328436710] [2024-10-12 20:18:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328436710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:05,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:05,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:18:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075076933] [2024-10-12 20:18:05,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:05,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:18:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:18:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:05,003 INFO L87 Difference]: Start difference. First operand 25731 states and 42006 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:05,177 INFO L93 Difference]: Finished difference Result 55909 states and 91584 transitions. [2024-10-12 20:18:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:18:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-12 20:18:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:05,259 INFO L225 Difference]: With dead ends: 55909 [2024-10-12 20:18:05,260 INFO L226 Difference]: Without dead ends: 38186 [2024-10-12 20:18:05,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:05,298 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 199 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:05,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38186 states. [2024-10-12 20:18:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38186 to 38184. [2024-10-12 20:18:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38184 states, 38183 states have (on average 1.630280491318126) internal successors, (62249), 38183 states have internal predecessors, (62249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38184 states to 38184 states and 62249 transitions. [2024-10-12 20:18:06,106 INFO L78 Accepts]: Start accepts. Automaton has 38184 states and 62249 transitions. Word has length 124 [2024-10-12 20:18:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:06,106 INFO L471 AbstractCegarLoop]: Abstraction has 38184 states and 62249 transitions. [2024-10-12 20:18:06,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 38184 states and 62249 transitions. [2024-10-12 20:18:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:18:06,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:06,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:06,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:18:06,109 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:06,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 939422510, now seen corresponding path program 1 times [2024-10-12 20:18:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953316413] [2024-10-12 20:18:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953316413] [2024-10-12 20:18:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953316413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:06,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:06,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:18:06,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74887697] [2024-10-12 20:18:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:06,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:18:06,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:18:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:06,233 INFO L87 Difference]: Start difference. First operand 38184 states and 62249 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:06,725 INFO L93 Difference]: Finished difference Result 83691 states and 137538 transitions. [2024-10-12 20:18:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:18:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-12 20:18:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:06,885 INFO L225 Difference]: With dead ends: 83691 [2024-10-12 20:18:06,885 INFO L226 Difference]: Without dead ends: 56810 [2024-10-12 20:18:07,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:18:07,098 INFO L432 NwaCegarLoop]: 702 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:07,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1201 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56810 states. [2024-10-12 20:18:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56810 to 56808. [2024-10-12 20:18:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56808 states, 56807 states have (on average 1.6321404052317496) internal successors, (92717), 56807 states have internal predecessors, (92717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56808 states to 56808 states and 92717 transitions. [2024-10-12 20:18:08,167 INFO L78 Accepts]: Start accepts. Automaton has 56808 states and 92717 transitions. Word has length 124 [2024-10-12 20:18:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:08,167 INFO L471 AbstractCegarLoop]: Abstraction has 56808 states and 92717 transitions. [2024-10-12 20:18:08,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 56808 states and 92717 transitions. [2024-10-12 20:18:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-12 20:18:08,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:08,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:18:08,169 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:08,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1660277294, now seen corresponding path program 1 times [2024-10-12 20:18:08,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666566162] [2024-10-12 20:18:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666566162] [2024-10-12 20:18:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666566162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:18:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319359028] [2024-10-12 20:18:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:08,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:18:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:18:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:18:08,521 INFO L87 Difference]: Start difference. First operand 56808 states and 92717 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:09,675 INFO L93 Difference]: Finished difference Result 182061 states and 297982 transitions. [2024-10-12 20:18:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:18:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-10-12 20:18:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:10,036 INFO L225 Difference]: With dead ends: 182061 [2024-10-12 20:18:10,037 INFO L226 Difference]: Without dead ends: 125496 [2024-10-12 20:18:10,090 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 [2024-10-12 20:18:10,092 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 652 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:10,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1764 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125496 states. [2024-10-12 20:18:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125496 to 90927. [2024-10-12 20:18:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90927 states, 90926 states have (on average 1.628467105118448) internal successors, (148070), 90926 states have internal predecessors, (148070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90927 states to 90927 states and 148070 transitions. [2024-10-12 20:18:12,233 INFO L78 Accepts]: Start accepts. Automaton has 90927 states and 148070 transitions. Word has length 125 [2024-10-12 20:18:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:12,233 INFO L471 AbstractCegarLoop]: Abstraction has 90927 states and 148070 transitions. [2024-10-12 20:18:12,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 90927 states and 148070 transitions. [2024-10-12 20:18:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-12 20:18:12,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:12,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:12,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:18:12,236 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:12,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:12,236 INFO L85 PathProgramCache]: Analyzing trace with hash 684049603, now seen corresponding path program 1 times [2024-10-12 20:18:12,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:12,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892863700] [2024-10-12 20:18:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:12,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892863700] [2024-10-12 20:18:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892863700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:12,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774150062] [2024-10-12 20:18:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:12,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:12,976 INFO L87 Difference]: Start difference. First operand 90927 states and 148070 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:13,520 INFO L93 Difference]: Finished difference Result 181613 states and 295751 transitions. [2024-10-12 20:18:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:18:13,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-10-12 20:18:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:13,677 INFO L225 Difference]: With dead ends: 181613 [2024-10-12 20:18:13,678 INFO L226 Difference]: Without dead ends: 90929 [2024-10-12 20:18:13,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:18:13,766 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 192 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:13,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90929 states. [2024-10-12 20:18:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90929 to 90927. [2024-10-12 20:18:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90927 states, 90926 states have (on average 1.6215933836306446) internal successors, (147445), 90926 states have internal predecessors, (147445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90927 states to 90927 states and 147445 transitions. [2024-10-12 20:18:15,767 INFO L78 Accepts]: Start accepts. Automaton has 90927 states and 147445 transitions. Word has length 127 [2024-10-12 20:18:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:15,767 INFO L471 AbstractCegarLoop]: Abstraction has 90927 states and 147445 transitions. [2024-10-12 20:18:15,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 90927 states and 147445 transitions. [2024-10-12 20:18:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-12 20:18:15,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:15,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:15,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:18:15,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:15,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1148518135, now seen corresponding path program 1 times [2024-10-12 20:18:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296876139] [2024-10-12 20:18:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296876139] [2024-10-12 20:18:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296876139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875347045] [2024-10-12 20:18:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:16,124 INFO L87 Difference]: Start difference. First operand 90927 states and 147445 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:17,408 INFO L93 Difference]: Finished difference Result 265771 states and 431467 transitions. [2024-10-12 20:18:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:18:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-10-12 20:18:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:17,701 INFO L225 Difference]: With dead ends: 265771 [2024-10-12 20:18:17,701 INFO L226 Difference]: Without dead ends: 175087 [2024-10-12 20:18:17,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:18:17,783 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 377 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:17,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 2051 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175087 states. [2024-10-12 20:18:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175087 to 175085. [2024-10-12 20:18:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175085 states, 175084 states have (on average 1.6129058052134975) internal successors, (282394), 175084 states have internal predecessors, (282394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175085 states to 175085 states and 282394 transitions. [2024-10-12 20:18:20,452 INFO L78 Accepts]: Start accepts. Automaton has 175085 states and 282394 transitions. Word has length 130 [2024-10-12 20:18:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:20,452 INFO L471 AbstractCegarLoop]: Abstraction has 175085 states and 282394 transitions. [2024-10-12 20:18:20,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 175085 states and 282394 transitions. [2024-10-12 20:18:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 20:18:20,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:20,454 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:20,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:18:20,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:20,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1242414720, now seen corresponding path program 1 times [2024-10-12 20:18:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694824472] [2024-10-12 20:18:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:18:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694824472] [2024-10-12 20:18:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694824472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:18:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085106121] [2024-10-12 20:18:21,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:21,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:18:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:18:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:18:21,960 INFO L87 Difference]: Start difference. First operand 175085 states and 282394 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:22,439 INFO L93 Difference]: Finished difference Result 178959 states and 288203 transitions. [2024-10-12 20:18:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:18:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-10-12 20:18:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:22,746 INFO L225 Difference]: With dead ends: 178959 [2024-10-12 20:18:22,746 INFO L226 Difference]: Without dead ends: 178957 [2024-10-12 20:18:22,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:18:22,814 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 0 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:22,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:18:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178957 states. [2024-10-12 20:18:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178957 to 178957. [2024-10-12 20:18:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178957 states, 178956 states have (on average 1.5994937303024208) internal successors, (286239), 178956 states have internal predecessors, (286239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178957 states to 178957 states and 286239 transitions. [2024-10-12 20:18:26,130 INFO L78 Accepts]: Start accepts. Automaton has 178957 states and 286239 transitions. Word has length 131 [2024-10-12 20:18:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:26,130 INFO L471 AbstractCegarLoop]: Abstraction has 178957 states and 286239 transitions. [2024-10-12 20:18:26,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 178957 states and 286239 transitions. [2024-10-12 20:18:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:18:26,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:26,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:26,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:18:26,145 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:26,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1909117538, now seen corresponding path program 1 times [2024-10-12 20:18:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871884453] [2024-10-12 20:18:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 20:18:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871884453] [2024-10-12 20:18:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871884453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:26,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130506511] [2024-10-12 20:18:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:26,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:26,754 INFO L87 Difference]: Start difference. First operand 178957 states and 286239 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:29,232 INFO L93 Difference]: Finished difference Result 487719 states and 782944 transitions. [2024-10-12 20:18:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:18:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-10-12 20:18:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:30,048 INFO L225 Difference]: With dead ends: 487719 [2024-10-12 20:18:30,048 INFO L226 Difference]: Without dead ends: 409067 [2024-10-12 20:18:30,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:18:30,139 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 1423 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:30,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2703 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409067 states. [2024-10-12 20:18:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409067 to 287505. [2024-10-12 20:18:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287505 states, 287504 states have (on average 1.5981934164394234) internal successors, (459487), 287504 states have internal predecessors, (459487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287505 states to 287505 states and 459487 transitions. [2024-10-12 20:18:36,081 INFO L78 Accepts]: Start accepts. Automaton has 287505 states and 459487 transitions. Word has length 162 [2024-10-12 20:18:36,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:36,082 INFO L471 AbstractCegarLoop]: Abstraction has 287505 states and 459487 transitions. [2024-10-12 20:18:36,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 287505 states and 459487 transitions. [2024-10-12 20:18:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:18:36,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:36,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:36,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:18:36,103 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:36,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2094803766, now seen corresponding path program 1 times [2024-10-12 20:18:36,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:36,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352571226] [2024-10-12 20:18:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 20:18:36,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:36,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352571226] [2024-10-12 20:18:36,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352571226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:36,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:36,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:36,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347760398] [2024-10-12 20:18:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:36,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:36,612 INFO L87 Difference]: Start difference. First operand 287505 states and 459487 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:39,117 INFO L93 Difference]: Finished difference Result 518939 states and 833204 transitions. [2024-10-12 20:18:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:18:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 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 162 [2024-10-12 20:18:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:40,107 INFO L225 Difference]: With dead ends: 518939 [2024-10-12 20:18:40,108 INFO L226 Difference]: Without dead ends: 440287 [2024-10-12 20:18:40,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:18:40,270 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 1394 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:40,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 3049 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440287 states. [2024-10-12 20:18:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440287 to 388623. [2024-10-12 20:18:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388623 states, 388622 states have (on average 1.599556895903989) internal successors, (621623), 388622 states have internal predecessors, (621623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388623 states to 388623 states and 621623 transitions. [2024-10-12 20:18:47,142 INFO L78 Accepts]: Start accepts. Automaton has 388623 states and 621623 transitions. Word has length 162 [2024-10-12 20:18:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:47,143 INFO L471 AbstractCegarLoop]: Abstraction has 388623 states and 621623 transitions. [2024-10-12 20:18:47,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:18:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 388623 states and 621623 transitions. [2024-10-12 20:18:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:18:47,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:47,150 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:18:47,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 20:18:47,150 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:47,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1368872698, now seen corresponding path program 1 times [2024-10-12 20:18:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:47,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074523052] [2024-10-12 20:18:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 20:18:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074523052] [2024-10-12 20:18:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074523052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:47,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801358649] [2024-10-12 20:18:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:47,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:47,403 INFO L87 Difference]: Start difference. First operand 388623 states and 621623 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)