./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.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 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:31:41,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:31:41,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:31:41,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:31:41,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:31:42,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:31:42,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:31:42,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:31:42,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:31:42,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:31:42,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:31:42,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:31:42,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:31:42,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:31:42,026 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:31:42,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:31:42,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:31:42,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:31:42,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:31:42,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:31:42,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:31:42,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:31:42,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:31:42,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:31:42,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:31:42,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:31:42,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:31:42,030 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:31:42,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:31:42,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:31:42,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:31:42,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:31:42,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:42,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:31:42,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:31:42,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:31:42,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:31:42,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:31:42,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:31:42,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:31:42,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:31:42,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:31:42,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 [2024-11-19 18:31:42,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:31:42,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:31:42,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:31:42,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:31:42,333 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:31:42,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2024-11-19 18:31:43,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:31:44,209 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:31:44,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2024-11-19 18:31:44,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c88aa396/8e22977bf9234ce8b7b7b8a4b1e56a11/FLAG1ebe3083f [2024-11-19 18:31:44,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c88aa396/8e22977bf9234ce8b7b7b8a4b1e56a11 [2024-11-19 18:31:44,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:31:44,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:31:44,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:44,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:31:44,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:31:44,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:44" (1/1) ... [2024-11-19 18:31:44,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e6ca29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:44, skipping insertion in model container [2024-11-19 18:31:44,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:44" (1/1) ... [2024-11-19 18:31:44,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:31:44,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2024-11-19 18:31:45,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:45,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:31:45,218 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2024-11-19 18:31:45,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:45,539 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:31:45,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45 WrapperNode [2024-11-19 18:31:45,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:45,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:45,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:31:45,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:31:45,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:45,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:45,926 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-19 18:31:45,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:45,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:31:45,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:31:45,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:31:45,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:45,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:45,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,147 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:31:46,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:31:46,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:31:46,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:31:46,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:31:46,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (1/1) ... [2024-11-19 18:31:46,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:31:46,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 18:31:46,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 18:31:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:31:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:31:46,595 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:31:46,600 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:31:50,292 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-19 18:31:50,293 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:31:50,317 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:31:50,318 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:31:50,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:50 BoogieIcfgContainer [2024-11-19 18:31:50,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:31:50,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:31:50,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:31:50,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:31:50,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:44" (1/3) ... [2024-11-19 18:31:50,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d247b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:50, skipping insertion in model container [2024-11-19 18:31:50,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:45" (2/3) ... [2024-11-19 18:31:50,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d247b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:50, skipping insertion in model container [2024-11-19 18:31:50,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:50" (3/3) ... [2024-11-19 18:31:50,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2024-11-19 18:31:50,346 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:31:50,347 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:31:50,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:31:50,428 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;@3574c4d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:31:50,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:31:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 18:31:50,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:50,445 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] [2024-11-19 18:31:50,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:50,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 563919826, now seen corresponding path program 1 times [2024-11-19 18:31:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:50,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035899948] [2024-11-19 18:31:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035899948] [2024-11-19 18:31:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035899948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:50,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901210025] [2024-11-19 18:31:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:50,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:50,851 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:53,242 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-19 18:31:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:53,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-19 18:31:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:53,263 INFO L225 Difference]: With dead ends: 1644 [2024-11-19 18:31:53,263 INFO L226 Difference]: Without dead ends: 977 [2024-11-19 18:31:53,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:53,276 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 440 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:53,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 18:31:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-19 18:31:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-19 18:31:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-19 18:31:53,403 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 48 [2024-11-19 18:31:53,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:53,404 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-19 18:31:53,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-19 18:31:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-19 18:31:53,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:53,408 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:53,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:31:53,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:53,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash 163753450, now seen corresponding path program 1 times [2024-11-19 18:31:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:53,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997403560] [2024-11-19 18:31:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:53,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:53,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997403560] [2024-11-19 18:31:53,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997403560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:53,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:53,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394227730] [2024-11-19 18:31:53,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:53,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:53,657 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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) [2024-11-19 18:31:55,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:55,868 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-19 18:31:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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 [2024-11-19 18:31:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:55,876 INFO L225 Difference]: With dead ends: 2813 [2024-11-19 18:31:55,877 INFO L226 Difference]: Without dead ends: 1844 [2024-11-19 18:31:55,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:55,882 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:55,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:31:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-19 18:31:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-19 18:31:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-19 18:31:55,931 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 115 [2024-11-19 18:31:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:55,933 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-19 18:31:55,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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) [2024-11-19 18:31:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-19 18:31:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-19 18:31:55,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:55,936 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:55,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:31:55,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:55,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1580886146, now seen corresponding path program 1 times [2024-11-19 18:31:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899283300] [2024-11-19 18:31:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:56,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899283300] [2024-11-19 18:31:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899283300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190427238] [2024-11-19 18:31:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:56,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:56,413 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 29.5) 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) [2024-11-19 18:32:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:00,008 INFO L93 Difference]: Finished difference Result 6767 states and 9259 transitions. [2024-11-19 18:32:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) 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 [2024-11-19 18:32:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:00,027 INFO L225 Difference]: With dead ends: 6767 [2024-11-19 18:32:00,028 INFO L226 Difference]: Without dead ends: 4928 [2024-11-19 18:32:00,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:00,035 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 866 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:00,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 328 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-19 18:32:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2024-11-19 18:32:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4875. [2024-11-19 18:32:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.2866228970045137) internal successors, (6271), 4874 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6271 transitions. [2024-11-19 18:32:00,129 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6271 transitions. Word has length 118 [2024-11-19 18:32:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:00,130 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 6271 transitions. [2024-11-19 18:32:00,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) 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) [2024-11-19 18:32:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6271 transitions. [2024-11-19 18:32:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-19 18:32:00,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:00,139 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:00,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:32:00,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:00,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1664170439, now seen corresponding path program 1 times [2024-11-19 18:32:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603571366] [2024-11-19 18:32:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-19 18:32:00,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603571366] [2024-11-19 18:32:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603571366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:32:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221860169] [2024-11-19 18:32:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:00,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:00,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:00,390 INFO L87 Difference]: Start difference. First operand 4875 states and 6271 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:02,123 INFO L93 Difference]: Finished difference Result 14436 states and 18544 transitions. [2024-11-19 18:32:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:02,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 187 [2024-11-19 18:32:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:02,150 INFO L225 Difference]: With dead ends: 14436 [2024-11-19 18:32:02,151 INFO L226 Difference]: Without dead ends: 8277 [2024-11-19 18:32:02,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:02,161 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:02,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:32:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-19 18:32:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6576. [2024-11-19 18:32:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6575 states have (on average 1.1793155893536122) internal successors, (7754), 6575 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 7754 transitions. [2024-11-19 18:32:02,325 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 7754 transitions. Word has length 187 [2024-11-19 18:32:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:02,325 INFO L471 AbstractCegarLoop]: Abstraction has 6576 states and 7754 transitions. [2024-11-19 18:32:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 7754 transitions. [2024-11-19 18:32:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-19 18:32:02,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:02,328 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:02,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:32:02,329 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:02,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1142859275, now seen corresponding path program 1 times [2024-11-19 18:32:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722841034] [2024-11-19 18:32:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:02,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:32:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722841034] [2024-11-19 18:32:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722841034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:02,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:02,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040674915] [2024-11-19 18:32:02,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:02,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:02,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:02,577 INFO L87 Difference]: Start difference. First operand 6576 states and 7754 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:04,127 INFO L93 Difference]: Finished difference Result 16560 states and 19931 transitions. [2024-11-19 18:32:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2024-11-19 18:32:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:04,161 INFO L225 Difference]: With dead ends: 16560 [2024-11-19 18:32:04,161 INFO L226 Difference]: Without dead ends: 9986 [2024-11-19 18:32:04,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:04,171 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:04,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 801 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:32:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2024-11-19 18:32:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2024-11-19 18:32:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.1696544817225838) internal successors, (11679), 9985 states have internal predecessors, (11679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 11679 transitions. [2024-11-19 18:32:04,403 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 11679 transitions. Word has length 200 [2024-11-19 18:32:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:04,404 INFO L471 AbstractCegarLoop]: Abstraction has 9986 states and 11679 transitions. [2024-11-19 18:32:04,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 11679 transitions. [2024-11-19 18:32:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-19 18:32:04,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:04,406 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:04,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:32:04,407 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:04,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1124334992, now seen corresponding path program 1 times [2024-11-19 18:32:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668119792] [2024-11-19 18:32:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 18:32:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:04,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668119792] [2024-11-19 18:32:04,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668119792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:04,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405054816] [2024-11-19 18:32:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:04,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:04,557 INFO L87 Difference]: Start difference. First operand 9986 states and 11679 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:06,377 INFO L93 Difference]: Finished difference Result 25067 states and 29587 transitions. [2024-11-19 18:32:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 202 [2024-11-19 18:32:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:06,410 INFO L225 Difference]: With dead ends: 25067 [2024-11-19 18:32:06,410 INFO L226 Difference]: Without dead ends: 15083 [2024-11-19 18:32:06,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:06,423 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 406 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:06,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 486 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:32:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15083 states. [2024-11-19 18:32:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15083 to 10384. [2024-11-19 18:32:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10384 states, 10383 states have (on average 1.1651738418568813) internal successors, (12098), 10383 states have internal predecessors, (12098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10384 states to 10384 states and 12098 transitions. [2024-11-19 18:32:06,696 INFO L78 Accepts]: Start accepts. Automaton has 10384 states and 12098 transitions. Word has length 202 [2024-11-19 18:32:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:06,697 INFO L471 AbstractCegarLoop]: Abstraction has 10384 states and 12098 transitions. [2024-11-19 18:32:06,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 10384 states and 12098 transitions. [2024-11-19 18:32:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-19 18:32:06,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:06,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:06,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:32:06,701 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:06,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash 97600964, now seen corresponding path program 1 times [2024-11-19 18:32:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:06,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363375392] [2024-11-19 18:32:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:32:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363375392] [2024-11-19 18:32:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363375392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155513577] [2024-11-19 18:32:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:06,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:06,947 INFO L87 Difference]: Start difference. First operand 10384 states and 12098 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:09,044 INFO L93 Difference]: Finished difference Result 25874 states and 30417 transitions. [2024-11-19 18:32:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 215 [2024-11-19 18:32:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:09,077 INFO L225 Difference]: With dead ends: 25874 [2024-11-19 18:32:09,078 INFO L226 Difference]: Without dead ends: 15492 [2024-11-19 18:32:09,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:09,091 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 430 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:09,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 448 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:32:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15492 states. [2024-11-19 18:32:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15492 to 13778. [2024-11-19 18:32:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13778 states, 13777 states have (on average 1.166509399724178) internal successors, (16071), 13777 states have internal predecessors, (16071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13778 states to 13778 states and 16071 transitions. [2024-11-19 18:32:09,287 INFO L78 Accepts]: Start accepts. Automaton has 13778 states and 16071 transitions. Word has length 215 [2024-11-19 18:32:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:09,288 INFO L471 AbstractCegarLoop]: Abstraction has 13778 states and 16071 transitions. [2024-11-19 18:32:09,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 13778 states and 16071 transitions. [2024-11-19 18:32:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-19 18:32:09,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:09,293 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:09,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:32:09,294 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:09,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1461457338, now seen corresponding path program 1 times [2024-11-19 18:32:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500091100] [2024-11-19 18:32:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:09,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:32:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500091100] [2024-11-19 18:32:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500091100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:09,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955984591] [2024-11-19 18:32:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:09,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:09,521 INFO L87 Difference]: Start difference. First operand 13778 states and 16071 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:11,376 INFO L93 Difference]: Finished difference Result 32234 states and 37932 transitions. [2024-11-19 18:32:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 247 [2024-11-19 18:32:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:11,413 INFO L225 Difference]: With dead ends: 32234 [2024-11-19 18:32:11,413 INFO L226 Difference]: Without dead ends: 18458 [2024-11-19 18:32:11,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:11,430 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 444 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:11,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 416 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:32:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states. [2024-11-19 18:32:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 17176. [2024-11-19 18:32:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17176 states, 17175 states have (on average 1.1833478893740903) internal successors, (20324), 17175 states have internal predecessors, (20324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 20324 transitions. [2024-11-19 18:32:11,646 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 20324 transitions. Word has length 247 [2024-11-19 18:32:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:11,647 INFO L471 AbstractCegarLoop]: Abstraction has 17176 states and 20324 transitions. [2024-11-19 18:32:11,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 20324 transitions. [2024-11-19 18:32:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-19 18:32:11,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:11,653 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:11,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:32:11,653 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:11,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash 492691904, now seen corresponding path program 1 times [2024-11-19 18:32:11,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:11,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112816538] [2024-11-19 18:32:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:32:12,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112816538] [2024-11-19 18:32:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112816538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:12,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983642002] [2024-11-19 18:32:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:12,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:12,011 INFO L87 Difference]: Start difference. First operand 17176 states and 20324 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:13,722 INFO L93 Difference]: Finished difference Result 39057 states and 46415 transitions. [2024-11-19 18:32:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2024-11-19 18:32:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:13,756 INFO L225 Difference]: With dead ends: 39057 [2024-11-19 18:32:13,757 INFO L226 Difference]: Without dead ends: 21458 [2024-11-19 18:32:13,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:13,778 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 356 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:13,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 864 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:32:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21458 states. [2024-11-19 18:32:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21458 to 21025. [2024-11-19 18:32:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21025 states, 21024 states have (on average 1.1667142313546424) internal successors, (24529), 21024 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21025 states to 21025 states and 24529 transitions. [2024-11-19 18:32:14,136 INFO L78 Accepts]: Start accepts. Automaton has 21025 states and 24529 transitions. Word has length 264 [2024-11-19 18:32:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:14,136 INFO L471 AbstractCegarLoop]: Abstraction has 21025 states and 24529 transitions. [2024-11-19 18:32:14,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 21025 states and 24529 transitions. [2024-11-19 18:32:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 18:32:14,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:14,140 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:14,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:32:14,141 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:14,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1444872292, now seen corresponding path program 1 times [2024-11-19 18:32:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470826752] [2024-11-19 18:32:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 230 proven. 70 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-19 18:32:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470826752] [2024-11-19 18:32:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470826752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:32:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736060250] [2024-11-19 18:32:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:14,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:32:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:32:14,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:32:14,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:32:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:14,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:32:14,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:32:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 230 proven. 70 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-19 18:32:15,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:32:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-19 18:32:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736060250] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:32:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:32:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-19 18:32:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065488702] [2024-11-19 18:32:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:32:15,464 INFO L87 Difference]: Start difference. First operand 21025 states and 24529 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:18,376 INFO L93 Difference]: Finished difference Result 59100 states and 69388 transitions. [2024-11-19 18:32:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-11-19 18:32:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:18,421 INFO L225 Difference]: With dead ends: 59100 [2024-11-19 18:32:18,421 INFO L226 Difference]: Without dead ends: 37213 [2024-11-19 18:32:18,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:32:18,444 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 878 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:18,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 158 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-19 18:32:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37213 states. [2024-11-19 18:32:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37213 to 35506. [2024-11-19 18:32:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35506 states, 35505 states have (on average 1.1591043514997887) internal successors, (41154), 35505 states have internal predecessors, (41154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35506 states to 35506 states and 41154 transitions. [2024-11-19 18:32:18,982 INFO L78 Accepts]: Start accepts. Automaton has 35506 states and 41154 transitions. Word has length 272 [2024-11-19 18:32:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:18,983 INFO L471 AbstractCegarLoop]: Abstraction has 35506 states and 41154 transitions. [2024-11-19 18:32:18,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 35506 states and 41154 transitions. [2024-11-19 18:32:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 18:32:18,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:18,988 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:18,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 18:32:19,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 18:32:19,189 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:19,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2116849427, now seen corresponding path program 1 times [2024-11-19 18:32:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244897337] [2024-11-19 18:32:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-19 18:32:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244897337] [2024-11-19 18:32:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244897337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:19,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211612412] [2024-11-19 18:32:19,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:19,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:19,555 INFO L87 Difference]: Start difference. First operand 35506 states and 41154 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:21,389 INFO L93 Difference]: Finished difference Result 78654 states and 91329 transitions. [2024-11-19 18:32:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2024-11-19 18:32:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:21,446 INFO L225 Difference]: With dead ends: 78654 [2024-11-19 18:32:21,446 INFO L226 Difference]: Without dead ends: 42723 [2024-11-19 18:32:21,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:21,464 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 380 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:21,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 850 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:32:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42723 states. [2024-11-19 18:32:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42723 to 42723. [2024-11-19 18:32:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42723 states, 42722 states have (on average 1.1170825335892514) internal successors, (47724), 42722 states have internal predecessors, (47724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42723 states to 42723 states and 47724 transitions. [2024-11-19 18:32:21,958 INFO L78 Accepts]: Start accepts. Automaton has 42723 states and 47724 transitions. Word has length 280 [2024-11-19 18:32:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:21,958 INFO L471 AbstractCegarLoop]: Abstraction has 42723 states and 47724 transitions. [2024-11-19 18:32:21,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 42723 states and 47724 transitions. [2024-11-19 18:32:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-19 18:32:21,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:21,964 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:21,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:32:21,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:21,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1578321914, now seen corresponding path program 1 times [2024-11-19 18:32:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:21,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245477710] [2024-11-19 18:32:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:21,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 371 proven. 73 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-19 18:32:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245477710] [2024-11-19 18:32:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245477710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:32:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825190105] [2024-11-19 18:32:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:32:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:32:22,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:32:22,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:32:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:22,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:32:22,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:32:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 371 proven. 73 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-19 18:32:22,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:32:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-19 18:32:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825190105] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:32:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:32:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-19 18:32:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138893264] [2024-11-19 18:32:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:23,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:23,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:32:23,124 INFO L87 Difference]: Start difference. First operand 42723 states and 47724 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:25,821 INFO L93 Difference]: Finished difference Result 101643 states and 113664 transitions. [2024-11-19 18:32:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 346 [2024-11-19 18:32:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:25,882 INFO L225 Difference]: With dead ends: 101643 [2024-11-19 18:32:25,882 INFO L226 Difference]: Without dead ends: 58493 [2024-11-19 18:32:25,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:32:25,909 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 879 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:25,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 172 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:32:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58493 states. [2024-11-19 18:32:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58493 to 55940. [2024-11-19 18:32:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55940 states, 55939 states have (on average 1.1210604408373406) internal successors, (62711), 55939 states have internal predecessors, (62711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55940 states to 55940 states and 62711 transitions. [2024-11-19 18:32:26,583 INFO L78 Accepts]: Start accepts. Automaton has 55940 states and 62711 transitions. Word has length 346 [2024-11-19 18:32:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:26,584 INFO L471 AbstractCegarLoop]: Abstraction has 55940 states and 62711 transitions. [2024-11-19 18:32:26,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 55940 states and 62711 transitions. [2024-11-19 18:32:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-19 18:32:26,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:26,595 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:26,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 18:32:26,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 18:32:26,796 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:26,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -272694228, now seen corresponding path program 1 times [2024-11-19 18:32:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:26,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424985620] [2024-11-19 18:32:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-19 18:32:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424985620] [2024-11-19 18:32:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424985620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276864865] [2024-11-19 18:32:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:27,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:27,292 INFO L87 Difference]: Start difference. First operand 55940 states and 62711 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:29,304 INFO L93 Difference]: Finished difference Result 121241 states and 135987 transitions. [2024-11-19 18:32:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 443 [2024-11-19 18:32:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:29,385 INFO L225 Difference]: With dead ends: 121241 [2024-11-19 18:32:29,385 INFO L226 Difference]: Without dead ends: 64878 [2024-11-19 18:32:29,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:29,413 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 339 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:29,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 774 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:32:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64878 states. [2024-11-19 18:32:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64878 to 53350. [2024-11-19 18:32:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53350 states, 53349 states have (on average 1.1076871169094078) internal successors, (59094), 53349 states have internal predecessors, (59094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53350 states to 53350 states and 59094 transitions. [2024-11-19 18:32:30,236 INFO L78 Accepts]: Start accepts. Automaton has 53350 states and 59094 transitions. Word has length 443 [2024-11-19 18:32:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:30,236 INFO L471 AbstractCegarLoop]: Abstraction has 53350 states and 59094 transitions. [2024-11-19 18:32:30,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53350 states and 59094 transitions. [2024-11-19 18:32:30,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-19 18:32:30,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:30,247 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-19 18:32:30,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:32:30,247 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -673343967, now seen corresponding path program 1 times [2024-11-19 18:32:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052922885] [2024-11-19 18:32:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-19 18:32:30,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052922885] [2024-11-19 18:32:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052922885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:30,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921304697] [2024-11-19 18:32:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:30,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:30,840 INFO L87 Difference]: Start difference. First operand 53350 states and 59094 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:32,736 INFO L93 Difference]: Finished difference Result 119901 states and 132834 transitions. [2024-11-19 18:32:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 444 [2024-11-19 18:32:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:32,804 INFO L225 Difference]: With dead ends: 119901 [2024-11-19 18:32:32,804 INFO L226 Difference]: Without dead ends: 63990 [2024-11-19 18:32:32,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:32,838 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 437 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:32,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 659 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:32:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63990 states. [2024-11-19 18:32:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63990 to 61851. [2024-11-19 18:32:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61851 states, 61850 states have (on average 1.0961196443007275) internal successors, (67795), 61850 states have internal predecessors, (67795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61851 states to 61851 states and 67795 transitions. [2024-11-19 18:32:33,505 INFO L78 Accepts]: Start accepts. Automaton has 61851 states and 67795 transitions. Word has length 444 [2024-11-19 18:32:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:33,506 INFO L471 AbstractCegarLoop]: Abstraction has 61851 states and 67795 transitions. [2024-11-19 18:32:33,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 61851 states and 67795 transitions. [2024-11-19 18:32:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-19 18:32:33,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:33,515 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:33,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:32:33,516 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:33,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash 833395288, now seen corresponding path program 1 times [2024-11-19 18:32:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183576797] [2024-11-19 18:32:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:33,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-19 18:32:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183576797] [2024-11-19 18:32:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183576797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:34,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:34,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:32:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960016] [2024-11-19 18:32:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:34,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:34,297 INFO L87 Difference]: Start difference. First operand 61851 states and 67795 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:37,160 INFO L93 Difference]: Finished difference Result 145471 states and 159571 transitions. [2024-11-19 18:32:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 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 448 [2024-11-19 18:32:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:37,258 INFO L225 Difference]: With dead ends: 145471 [2024-11-19 18:32:37,258 INFO L226 Difference]: Without dead ends: 83622 [2024-11-19 18:32:37,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:37,304 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 828 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:37,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 207 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:32:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83622 states. [2024-11-19 18:32:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83622 to 78925. [2024-11-19 18:32:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78925 states, 78924 states have (on average 1.097967665095535) internal successors, (86656), 78924 states have internal predecessors, (86656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78925 states to 78925 states and 86656 transitions. [2024-11-19 18:32:38,357 INFO L78 Accepts]: Start accepts. Automaton has 78925 states and 86656 transitions. Word has length 448 [2024-11-19 18:32:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:38,357 INFO L471 AbstractCegarLoop]: Abstraction has 78925 states and 86656 transitions. [2024-11-19 18:32:38,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 78925 states and 86656 transitions. [2024-11-19 18:32:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-19 18:32:38,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:38,363 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:32:38,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:32:38,363 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:38,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash -466462954, now seen corresponding path program 1 times [2024-11-19 18:32:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835722299] [2024-11-19 18:32:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-19 18:32:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835722299] [2024-11-19 18:32:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835722299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649507094] [2024-11-19 18:32:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:39,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:39,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:39,015 INFO L87 Difference]: Start difference. First operand 78925 states and 86656 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:41,010 INFO L93 Difference]: Finished difference Result 167641 states and 184227 transitions. [2024-11-19 18:32:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 467 [2024-11-19 18:32:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:41,115 INFO L225 Difference]: With dead ends: 167641 [2024-11-19 18:32:41,115 INFO L226 Difference]: Without dead ends: 88718 [2024-11-19 18:32:41,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:41,138 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 386 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:41,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 326 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:32:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88718 states. [2024-11-19 18:32:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88718 to 88286. [2024-11-19 18:32:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88286 states, 88285 states have (on average 1.0953389590530667) internal successors, (96702), 88285 states have internal predecessors, (96702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88286 states to 88286 states and 96702 transitions. [2024-11-19 18:32:42,358 INFO L78 Accepts]: Start accepts. Automaton has 88286 states and 96702 transitions. Word has length 467 [2024-11-19 18:32:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:42,359 INFO L471 AbstractCegarLoop]: Abstraction has 88286 states and 96702 transitions. [2024-11-19 18:32:42,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 88286 states and 96702 transitions. [2024-11-19 18:32:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-19 18:32:42,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:42,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:42,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:32:42,371 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:42,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash 811412228, now seen corresponding path program 1 times [2024-11-19 18:32:42,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865568352] [2024-11-19 18:32:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-19 18:32:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865568352] [2024-11-19 18:32:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865568352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732195279] [2024-11-19 18:32:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:42,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:42,651 INFO L87 Difference]: Start difference. First operand 88286 states and 96702 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:44,574 INFO L93 Difference]: Finished difference Result 190190 states and 208577 transitions. [2024-11-19 18:32:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491 [2024-11-19 18:32:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:44,698 INFO L225 Difference]: With dead ends: 190190 [2024-11-19 18:32:44,699 INFO L226 Difference]: Without dead ends: 101906 [2024-11-19 18:32:44,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:44,753 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 475 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:44,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 264 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:32:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101906 states. [2024-11-19 18:32:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101906 to 101449. [2024-11-19 18:32:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101449 states, 101448 states have (on average 1.0927963094393187) internal successors, (110862), 101448 states have internal predecessors, (110862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101449 states to 101449 states and 110862 transitions. [2024-11-19 18:32:46,493 INFO L78 Accepts]: Start accepts. Automaton has 101449 states and 110862 transitions. Word has length 491 [2024-11-19 18:32:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:46,494 INFO L471 AbstractCegarLoop]: Abstraction has 101449 states and 110862 transitions. [2024-11-19 18:32:46,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 101449 states and 110862 transitions. [2024-11-19 18:32:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-19 18:32:46,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:46,506 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:32:46,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:32:46,506 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:46,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -691703023, now seen corresponding path program 1 times [2024-11-19 18:32:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:46,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003203622] [2024-11-19 18:32:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-19 18:32:46,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003203622] [2024-11-19 18:32:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003203622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411212957] [2024-11-19 18:32:46,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:46,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:46,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:46,845 INFO L87 Difference]: Start difference. First operand 101449 states and 110862 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:48,878 INFO L93 Difference]: Finished difference Result 208447 states and 227581 transitions. [2024-11-19 18:32:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 494 [2024-11-19 18:32:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:49,016 INFO L225 Difference]: With dead ends: 208447 [2024-11-19 18:32:49,016 INFO L226 Difference]: Without dead ends: 105293 [2024-11-19 18:32:49,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:49,073 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 401 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:49,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 807 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:32:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105293 states. [2024-11-19 18:32:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105293 to 102292. [2024-11-19 18:32:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102292 states, 102291 states have (on average 1.0912103704138194) internal successors, (111621), 102291 states have internal predecessors, (111621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102292 states to 102292 states and 111621 transitions. [2024-11-19 18:32:50,839 INFO L78 Accepts]: Start accepts. Automaton has 102292 states and 111621 transitions. Word has length 494 [2024-11-19 18:32:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:50,843 INFO L471 AbstractCegarLoop]: Abstraction has 102292 states and 111621 transitions. [2024-11-19 18:32:50,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 102292 states and 111621 transitions. [2024-11-19 18:32:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-19 18:32:50,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:50,860 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:50,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:32:50,860 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:50,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash -874297013, now seen corresponding path program 1 times [2024-11-19 18:32:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:50,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667844104] [2024-11-19 18:32:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:50,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-19 18:32:51,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:51,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667844104] [2024-11-19 18:32:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667844104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:32:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130426728] [2024-11-19 18:32:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:51,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:32:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:32:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:51,456 INFO L87 Difference]: Start difference. First operand 102292 states and 111621 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:54,681 INFO L93 Difference]: Finished difference Result 212667 states and 231695 transitions. [2024-11-19 18:32:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:32:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 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 532 [2024-11-19 18:32:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:54,824 INFO L225 Difference]: With dead ends: 212667 [2024-11-19 18:32:54,825 INFO L226 Difference]: Without dead ends: 110801 [2024-11-19 18:32:54,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:32:54,898 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 793 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:54,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 381 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 18:32:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110801 states.