./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/eca-rers2012/Problem17_label22.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 4813005008457a5d4e6ae5277d71ca9796b28c553541eb8e67cfaf33286f04c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:31:35,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:31:35,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:31:35,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:31:35,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:31:35,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:31:35,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:31:35,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:31:35,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:31:35,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:31:35,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:31:35,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:31:35,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:31:35,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:31:35,415 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:31:35,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:31:35,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:31:35,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:31:35,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:31:35,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:31:35,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:31:35,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:31:35,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:31:35,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:31:35,423 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:31:35,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:31:35,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:31:35,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:31:35,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:31:35,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:31:35,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:31:35,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:31:35,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:31:35,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:31:35,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:31:35,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:31:35,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:31:35,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:31:35,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:31:35,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:31:35,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:31:35,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:31:35,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813005008457a5d4e6ae5277d71ca9796b28c553541eb8e67cfaf33286f04c4 [2024-11-21 22:31:35,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:31:35,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:31:35,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:31:35,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:31:35,708 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:31:35,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label22.c [2024-11-21 22:31:36,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:31:37,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:31:37,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label22.c [2024-11-21 22:31:37,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d5cb78b/1d65f76522544cfab8ec72b1032e0848/FLAGdf4fcabf4 [2024-11-21 22:31:37,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d5cb78b/1d65f76522544cfab8ec72b1032e0848 [2024-11-21 22:31:37,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:31:37,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:31:37,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:31:37,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:31:37,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:31:37,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:31:37" (1/1) ... [2024-11-21 22:31:37,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f78b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:37, skipping insertion in model container [2024-11-21 22:31:37,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:31:37" (1/1) ... [2024-11-21 22:31:37,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:31:37,711 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_label22.c[7589,7602] [2024-11-21 22:31:38,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:31:38,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:31:38,157 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_label22.c[7589,7602] [2024-11-21 22:31:38,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:31:38,355 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:31:38,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38 WrapperNode [2024-11-21 22:31:38,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:31:38,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:31:38,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:31:38,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:31:38,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,636 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-21 22:31:38,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:31:38,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:31:38,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:31:38,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:31:38,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,817 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]. [2024-11-21 22:31:38,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:38,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:39,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:31:39,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:31:39,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:31:39,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:31:39,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (1/1) ... [2024-11-21 22:31:39,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:31:39,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:31:39,064 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) [2024-11-21 22:31:39,066 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 [2024-11-21 22:31:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:31:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:31:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:31:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:31:39,153 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:31:39,155 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:31:41,664 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-21 22:31:41,665 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:31:41,695 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:31:41,695 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:31:41,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:31:41 BoogieIcfgContainer [2024-11-21 22:31:41,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:31:41,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:31:41,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:31:41,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:31:41,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:31:37" (1/3) ... [2024-11-21 22:31:41,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c33fe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:31:41, skipping insertion in model container [2024-11-21 22:31:41,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:31:38" (2/3) ... [2024-11-21 22:31:41,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c33fe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:31:41, skipping insertion in model container [2024-11-21 22:31:41,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:31:41" (3/3) ... [2024-11-21 22:31:41,702 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22.c [2024-11-21 22:31:41,715 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:31:41,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:31:41,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:31:41,782 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;@5f7210bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:31:41,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:31:41,788 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) [2024-11-21 22:31:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-21 22:31:41,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:41,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:31:41,795 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:41,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times [2024-11-21 22:31:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781737815] [2024-11-21 22:31:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:31:42,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781737815] [2024-11-21 22:31:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781737815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:42,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:31:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945316118] [2024-11-21 22:31:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:42,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:42,095 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 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:44,346 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-21 22:31:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:44,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-21 22:31:44,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:44,362 INFO L225 Difference]: With dead ends: 1667 [2024-11-21 22:31:44,362 INFO L226 Difference]: Without dead ends: 998 [2024-11-21 22:31:44,366 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 [2024-11-21 22:31:44,369 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 494 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:44,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:31:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-21 22:31:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-21 22:31:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-21 22:31:44,435 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 51 [2024-11-21 22:31:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:44,436 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-21 22:31:44,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-21 22:31:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-21 22:31:44,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:44,439 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, 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] [2024-11-21 22:31:44,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:31:44,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:44,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 857069701, now seen corresponding path program 1 times [2024-11-21 22:31:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:44,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067515874] [2024-11-21 22:31:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:31:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067515874] [2024-11-21 22:31:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067515874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:31:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397673547] [2024-11-21 22:31:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:44,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:44,732 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:46,551 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-21 22:31:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:46,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-21 22:31:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:46,557 INFO L225 Difference]: With dead ends: 2841 [2024-11-21 22:31:46,558 INFO L226 Difference]: Without dead ends: 1861 [2024-11-21 22:31:46,559 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 [2024-11-21 22:31:46,560 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:46,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:31:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-21 22:31:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-21 22:31:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-21 22:31:46,590 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 116 [2024-11-21 22:31:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:46,592 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-21 22:31:46,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-21 22:31:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-21 22:31:46,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:46,600 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, 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] [2024-11-21 22:31:46,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:31:46,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:46,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1183690640, now seen corresponding path program 1 times [2024-11-21 22:31:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013485908] [2024-11-21 22:31:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:31:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013485908] [2024-11-21 22:31:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013485908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:46,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:31:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114331365] [2024-11-21 22:31:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:46,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:46,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:46,996 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:48,859 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-21 22:31:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:48,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-21 22:31:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:48,868 INFO L225 Difference]: With dead ends: 4591 [2024-11-21 22:31:48,868 INFO L226 Difference]: Without dead ends: 2736 [2024-11-21 22:31:48,871 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 [2024-11-21 22:31:48,871 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:48,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:31:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-21 22:31:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-21 22:31:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-21 22:31:48,911 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 156 [2024-11-21 22:31:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:48,913 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-21 22:31:48,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-21 22:31:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-21 22:31:48,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:48,917 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, 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] [2024-11-21 22:31:48,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:31:48,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:48,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1073477439, now seen corresponding path program 1 times [2024-11-21 22:31:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402991182] [2024-11-21 22:31:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:31:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402991182] [2024-11-21 22:31:49,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402991182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:49,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:49,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:31:49,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228670032] [2024-11-21 22:31:49,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:49,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:49,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:49,060 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:50,771 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-21 22:31:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:50,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-11-21 22:31:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:50,784 INFO L225 Difference]: With dead ends: 6709 [2024-11-21 22:31:50,784 INFO L226 Difference]: Without dead ends: 3995 [2024-11-21 22:31:50,787 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 [2024-11-21 22:31:50,788 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 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, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:50,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:31:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-21 22:31:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-21 22:31:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-21 22:31:50,833 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 162 [2024-11-21 22:31:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:50,834 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-21 22:31:50,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-21 22:31:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-21 22:31:50,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:50,836 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, 3, 3, 3, 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] [2024-11-21 22:31:50,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:31:50,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:50,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2067055148, now seen corresponding path program 1 times [2024-11-21 22:31:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:50,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246062295] [2024-11-21 22:31:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:31:51,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246062295] [2024-11-21 22:31:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246062295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:51,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 22:31:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472617848] [2024-11-21 22:31:51,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:51,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:31:51,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:51,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:31:51,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:31:51,137 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:53,267 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-21 22:31:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:31:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2024-11-21 22:31:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:53,281 INFO L225 Difference]: With dead ends: 8005 [2024-11-21 22:31:53,281 INFO L226 Difference]: Without dead ends: 4865 [2024-11-21 22:31:53,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:31:53,286 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:53,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:31:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-21 22:31:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-21 22:31:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-21 22:31:53,362 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 199 [2024-11-21 22:31:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:53,363 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-21 22:31:53,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-21 22:31:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-21 22:31:53,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:53,365 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:31:53,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:31:53,365 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:53,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -437410109, now seen corresponding path program 1 times [2024-11-21 22:31:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:53,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067568282] [2024-11-21 22:31:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:53,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-21 22:31:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067568282] [2024-11-21 22:31:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067568282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:53,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:53,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:31:53,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233316312] [2024-11-21 22:31:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:53,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:53,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:53,552 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:55,375 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-21 22:31:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 205 [2024-11-21 22:31:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:55,394 INFO L225 Difference]: With dead ends: 12249 [2024-11-21 22:31:55,395 INFO L226 Difference]: Without dead ends: 7399 [2024-11-21 22:31:55,402 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 [2024-11-21 22:31:55,403 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 397 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:55,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:31:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-21 22:31:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-21 22:31:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-21 22:31:55,486 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 205 [2024-11-21 22:31:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:55,486 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-21 22:31:55,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-21 22:31:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-21 22:31:55,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:55,488 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:31:55,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:31:55,489 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:55,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash 81674799, now seen corresponding path program 1 times [2024-11-21 22:31:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:55,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038027997] [2024-11-21 22:31:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:31:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038027997] [2024-11-21 22:31:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038027997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:31:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015740317] [2024-11-21 22:31:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:55,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:31:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:31:55,881 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) [2024-11-21 22:31:55,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:31:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:55,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:31:55,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:31:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:31:56,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:31:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015740317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:56,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:31:56,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-21 22:31:56,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106498470] [2024-11-21 22:31:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:56,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:56,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:56,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:31:56,085 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:31:57,994 INFO L93 Difference]: Finished difference Result 13481 states and 17131 transitions. [2024-11-21 22:31:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:31:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 218 [2024-11-21 22:31:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:31:58,025 INFO L225 Difference]: With dead ends: 13481 [2024-11-21 22:31:58,029 INFO L226 Difference]: Without dead ends: 8657 [2024-11-21 22:31:58,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:31:58,040 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 433 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:31:58,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 483 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:31:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8657 states. [2024-11-21 22:31:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8657 to 7378. [2024-11-21 22:31:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 1.2479327639962043) internal successors, (9206), 7377 states have internal predecessors, (9206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 9206 transitions. [2024-11-21 22:31:58,155 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 9206 transitions. Word has length 218 [2024-11-21 22:31:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:31:58,156 INFO L471 AbstractCegarLoop]: Abstraction has 7378 states and 9206 transitions. [2024-11-21 22:31:58,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:31:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 9206 transitions. [2024-11-21 22:31:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-21 22:31:58,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:31:58,158 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:31:58,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:31:58,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:31:58,360 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:31:58,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:31:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -156050061, now seen corresponding path program 1 times [2024-11-21 22:31:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:31:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842296728] [2024-11-21 22:31:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:31:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:31:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:31:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:31:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:31:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842296728] [2024-11-21 22:31:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842296728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:31:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:31:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:31:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464277732] [2024-11-21 22:31:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:31:58,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:31:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:31:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:31:58,540 INFO L87 Difference]: Start difference. First operand 7378 states and 9206 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:00,391 INFO L93 Difference]: Finished difference Result 18607 states and 23435 transitions. [2024-11-21 22:32:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 267 [2024-11-21 22:32:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:00,406 INFO L225 Difference]: With dead ends: 18607 [2024-11-21 22:32:00,406 INFO L226 Difference]: Without dead ends: 10379 [2024-11-21 22:32:00,411 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 [2024-11-21 22:32:00,412 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 449 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:00,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1020 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:32:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2024-11-21 22:32:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10371. [2024-11-21 22:32:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10371 states, 10370 states have (on average 1.2060752169720348) internal successors, (12507), 10370 states have internal predecessors, (12507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10371 states to 10371 states and 12507 transitions. [2024-11-21 22:32:00,511 INFO L78 Accepts]: Start accepts. Automaton has 10371 states and 12507 transitions. Word has length 267 [2024-11-21 22:32:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:00,511 INFO L471 AbstractCegarLoop]: Abstraction has 10371 states and 12507 transitions. [2024-11-21 22:32:00,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10371 states and 12507 transitions. [2024-11-21 22:32:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-21 22:32:00,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:00,515 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:00,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:32:00,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1979500746, now seen corresponding path program 1 times [2024-11-21 22:32:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134341284] [2024-11-21 22:32:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:00,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 236 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-21 22:32:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:00,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134341284] [2024-11-21 22:32:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134341284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:00,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722728073] [2024-11-21 22:32:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:32:00,779 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) [2024-11-21 22:32:00,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:32:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:00,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:32:00,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:32:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 236 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-21 22:32:01,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:32:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-21 22:32:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722728073] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:32:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-21 22:32:01,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228133135] [2024-11-21 22:32:01,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:01,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:01,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:01,456 INFO L87 Difference]: Start difference. First operand 10371 states and 12507 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) [2024-11-21 22:32:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:04,684 INFO L93 Difference]: Finished difference Result 32691 states and 39751 transitions. [2024-11-21 22:32:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:04,685 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 275 [2024-11-21 22:32:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:04,714 INFO L225 Difference]: With dead ends: 32691 [2024-11-21 22:32:04,715 INFO L226 Difference]: Without dead ends: 21461 [2024-11-21 22:32:04,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:04,727 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1138 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:04,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 143 Invalid, 3713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-21 22:32:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21461 states. [2024-11-21 22:32:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21461 to 21459. [2024-11-21 22:32:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21459 states, 21458 states have (on average 1.1587752819461272) internal successors, (24865), 21458 states have internal predecessors, (24865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21459 states to 21459 states and 24865 transitions. [2024-11-21 22:32:04,921 INFO L78 Accepts]: Start accepts. Automaton has 21459 states and 24865 transitions. Word has length 275 [2024-11-21 22:32:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 21459 states and 24865 transitions. [2024-11-21 22:32:04,922 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) [2024-11-21 22:32:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 21459 states and 24865 transitions. [2024-11-21 22:32:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-21 22:32:04,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:04,925 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:04,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 22:32:05,129 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,SelfDestructingSolverStorable8 [2024-11-21 22:32:05,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:05,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2007218242, now seen corresponding path program 1 times [2024-11-21 22:32:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228822018] [2024-11-21 22:32:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:32:05,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228822018] [2024-11-21 22:32:05,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228822018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:05,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:05,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:05,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041437022] [2024-11-21 22:32:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:05,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:05,271 INFO L87 Difference]: Start difference. First operand 21459 states and 24865 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:06,685 INFO L93 Difference]: Finished difference Result 47592 states and 55279 transitions. [2024-11-21 22:32:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2024-11-21 22:32:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:06,923 INFO L225 Difference]: With dead ends: 47592 [2024-11-21 22:32:06,927 INFO L226 Difference]: Without dead ends: 25708 [2024-11-21 22:32:06,949 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 [2024-11-21 22:32:06,953 INFO L432 NwaCegarLoop]: 793 mSDtfsCounter, 371 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:06,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 860 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:32:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25708 states. [2024-11-21 22:32:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25708 to 25708. [2024-11-21 22:32:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25708 states, 25707 states have (on average 1.1349048897187537) internal successors, (29175), 25707 states have internal predecessors, (29175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25708 states to 25708 states and 29175 transitions. [2024-11-21 22:32:07,411 INFO L78 Accepts]: Start accepts. Automaton has 25708 states and 29175 transitions. Word has length 288 [2024-11-21 22:32:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:07,412 INFO L471 AbstractCegarLoop]: Abstraction has 25708 states and 29175 transitions. [2024-11-21 22:32:07,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 25708 states and 29175 transitions. [2024-11-21 22:32:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-21 22:32:07,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:07,419 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, 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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:07,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:32:07,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:07,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1743092711, now seen corresponding path program 1 times [2024-11-21 22:32:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:07,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712120638] [2024-11-21 22:32:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 377 proven. 73 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-21 22:32:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712120638] [2024-11-21 22:32:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712120638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925503574] [2024-11-21 22:32:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:07,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:07,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:32:07,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:32:07,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:32:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:07,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:32:07,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:32:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 377 proven. 73 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-21 22:32:07,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:32:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-21 22:32:08,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925503574] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:08,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:32:08,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-21 22:32:08,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873803458] [2024-11-21 22:32:08,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:08,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:08,192 INFO L87 Difference]: Start difference. First operand 25708 states and 29175 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) [2024-11-21 22:32:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:10,850 INFO L93 Difference]: Finished difference Result 62499 states and 71199 transitions. [2024-11-21 22:32:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:10,851 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 349 [2024-11-21 22:32:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:10,891 INFO L225 Difference]: With dead ends: 62499 [2024-11-21 22:32:10,891 INFO L226 Difference]: Without dead ends: 36366 [2024-11-21 22:32:10,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:10,908 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 879 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:10,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 180 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 22:32:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36366 states. [2024-11-21 22:32:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36366 to 34238. [2024-11-21 22:32:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34238 states, 34237 states have (on average 1.1454566696848438) internal successors, (39217), 34237 states have internal predecessors, (39217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34238 states to 34238 states and 39217 transitions. [2024-11-21 22:32:11,222 INFO L78 Accepts]: Start accepts. Automaton has 34238 states and 39217 transitions. Word has length 349 [2024-11-21 22:32:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:11,222 INFO L471 AbstractCegarLoop]: Abstraction has 34238 states and 39217 transitions. [2024-11-21 22:32:11,222 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) [2024-11-21 22:32:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 34238 states and 39217 transitions. [2024-11-21 22:32:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-21 22:32:11,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:11,230 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:11,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 22:32:11,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:11,435 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:11,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -604986488, now seen corresponding path program 1 times [2024-11-21 22:32:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641253114] [2024-11-21 22:32:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2024-11-21 22:32:11,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641253114] [2024-11-21 22:32:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641253114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:11,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486100674] [2024-11-21 22:32:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:11,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:11,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:11,640 INFO L87 Difference]: Start difference. First operand 34238 states and 39217 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:13,393 INFO L93 Difference]: Finished difference Result 80388 states and 92354 transitions. [2024-11-21 22:32:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 472 [2024-11-21 22:32:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:13,442 INFO L225 Difference]: With dead ends: 80388 [2024-11-21 22:32:13,442 INFO L226 Difference]: Without dead ends: 45725 [2024-11-21 22:32:13,460 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 [2024-11-21 22:32:13,461 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 486 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:13,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 255 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:32:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45725 states. [2024-11-21 22:32:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45725 to 33771. [2024-11-21 22:32:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33771 states, 33770 states have (on average 1.1432928634883033) internal successors, (38609), 33770 states have internal predecessors, (38609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33771 states to 33771 states and 38609 transitions. [2024-11-21 22:32:13,786 INFO L78 Accepts]: Start accepts. Automaton has 33771 states and 38609 transitions. Word has length 472 [2024-11-21 22:32:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:13,786 INFO L471 AbstractCegarLoop]: Abstraction has 33771 states and 38609 transitions. [2024-11-21 22:32:13,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:13,787 INFO L276 IsEmpty]: Start isEmpty. Operand 33771 states and 38609 transitions. [2024-11-21 22:32:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-21 22:32:13,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:13,794 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:13,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:32:13,795 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:13,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1478014688, now seen corresponding path program 1 times [2024-11-21 22:32:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558855031] [2024-11-21 22:32:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-21 22:32:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558855031] [2024-11-21 22:32:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558855031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423712346] [2024-11-21 22:32:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:14,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:14,154 INFO L87 Difference]: Start difference. First operand 33771 states and 38609 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:15,818 INFO L93 Difference]: Finished difference Result 80766 states and 92383 transitions. [2024-11-21 22:32:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 484 [2024-11-21 22:32:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:15,865 INFO L225 Difference]: With dead ends: 80766 [2024-11-21 22:32:15,865 INFO L226 Difference]: Without dead ends: 43595 [2024-11-21 22:32:15,885 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 [2024-11-21 22:32:15,886 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 372 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:15,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 846 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:32:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43595 states. [2024-11-21 22:32:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43595 to 38898. [2024-11-21 22:32:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38898 states, 38897 states have (on average 1.1182610484099031) internal successors, (43497), 38897 states have internal predecessors, (43497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38898 states to 38898 states and 43497 transitions. [2024-11-21 22:32:16,248 INFO L78 Accepts]: Start accepts. Automaton has 38898 states and 43497 transitions. Word has length 484 [2024-11-21 22:32:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:16,248 INFO L471 AbstractCegarLoop]: Abstraction has 38898 states and 43497 transitions. [2024-11-21 22:32:16,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 38898 states and 43497 transitions. [2024-11-21 22:32:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-21 22:32:16,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:16,257 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:16,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:32:16,258 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:16,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash -125416773, now seen corresponding path program 1 times [2024-11-21 22:32:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:16,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749428655] [2024-11-21 22:32:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:16,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-21 22:32:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:16,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749428655] [2024-11-21 22:32:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749428655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:16,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:16,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561801275] [2024-11-21 22:32:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:16,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:16,575 INFO L87 Difference]: Start difference. First operand 38898 states and 43497 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:18,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:18,255 INFO L93 Difference]: Finished difference Result 90994 states and 101594 transitions. [2024-11-21 22:32:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 486 [2024-11-21 22:32:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:18,327 INFO L225 Difference]: With dead ends: 90994 [2024-11-21 22:32:18,327 INFO L226 Difference]: Without dead ends: 51666 [2024-11-21 22:32:18,359 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 [2024-11-21 22:32:18,360 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 472 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:18,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 165 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:32:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51666 states. [2024-11-21 22:32:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51666 to 49095. [2024-11-21 22:32:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49095 states, 49094 states have (on average 1.117101886177537) internal successors, (54843), 49094 states have internal predecessors, (54843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49095 states to 49095 states and 54843 transitions. [2024-11-21 22:32:18,969 INFO L78 Accepts]: Start accepts. Automaton has 49095 states and 54843 transitions. Word has length 486 [2024-11-21 22:32:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:18,970 INFO L471 AbstractCegarLoop]: Abstraction has 49095 states and 54843 transitions. [2024-11-21 22:32:18,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 49095 states and 54843 transitions. [2024-11-21 22:32:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-21 22:32:18,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:18,978 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:18,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:32:18,979 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:18,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash -760902108, now seen corresponding path program 1 times [2024-11-21 22:32:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:18,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792471205] [2024-11-21 22:32:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:18,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-21 22:32:19,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792471205] [2024-11-21 22:32:19,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792471205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:19,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:19,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946862419] [2024-11-21 22:32:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:19,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:19,345 INFO L87 Difference]: Start difference. First operand 49095 states and 54843 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:21,102 INFO L93 Difference]: Finished difference Result 111375 states and 124283 transitions. [2024-11-21 22:32:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 [2024-11-21 22:32:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:21,168 INFO L225 Difference]: With dead ends: 111375 [2024-11-21 22:32:21,169 INFO L226 Difference]: Without dead ends: 57605 [2024-11-21 22:32:21,201 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 [2024-11-21 22:32:21,202 INFO L432 NwaCegarLoop]: 722 mSDtfsCounter, 280 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:21,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 778 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:32:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57605 states. [2024-11-21 22:32:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57605 to 45663. [2024-11-21 22:32:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45663 states, 45662 states have (on average 1.11777845911261) internal successors, (51040), 45662 states have internal predecessors, (51040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45663 states to 45663 states and 51040 transitions. [2024-11-21 22:32:21,689 INFO L78 Accepts]: Start accepts. Automaton has 45663 states and 51040 transitions. Word has length 494 [2024-11-21 22:32:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:21,690 INFO L471 AbstractCegarLoop]: Abstraction has 45663 states and 51040 transitions. [2024-11-21 22:32:21,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45663 states and 51040 transitions. [2024-11-21 22:32:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-21 22:32:21,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:21,702 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:21,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:32:21,703 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:21,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 265357040, now seen corresponding path program 1 times [2024-11-21 22:32:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859899012] [2024-11-21 22:32:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-21 22:32:21,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:21,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859899012] [2024-11-21 22:32:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859899012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311032648] [2024-11-21 22:32:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:21,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:21,883 INFO L87 Difference]: Start difference. First operand 45663 states and 51040 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:23,846 INFO L93 Difference]: Finished difference Result 100253 states and 111804 transitions. [2024-11-21 22:32:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 594 [2024-11-21 22:32:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:23,908 INFO L225 Difference]: With dead ends: 100253 [2024-11-21 22:32:23,908 INFO L226 Difference]: Without dead ends: 50758 [2024-11-21 22:32:23,930 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 [2024-11-21 22:32:23,933 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 493 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:23,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 703 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:32:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50758 states. [2024-11-21 22:32:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50758 to 49054. [2024-11-21 22:32:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49054 states, 49053 states have (on average 1.105029254072126) internal successors, (54205), 49053 states have internal predecessors, (54205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49054 states to 49054 states and 54205 transitions. [2024-11-21 22:32:24,675 INFO L78 Accepts]: Start accepts. Automaton has 49054 states and 54205 transitions. Word has length 594 [2024-11-21 22:32:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:24,675 INFO L471 AbstractCegarLoop]: Abstraction has 49054 states and 54205 transitions. [2024-11-21 22:32:24,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 49054 states and 54205 transitions. [2024-11-21 22:32:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2024-11-21 22:32:24,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:24,697 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:24,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:32:24,698 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:24,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:24,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1620580381, now seen corresponding path program 1 times [2024-11-21 22:32:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878908164] [2024-11-21 22:32:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-21 22:32:25,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878908164] [2024-11-21 22:32:25,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878908164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:25,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:25,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586588469] [2024-11-21 22:32:25,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:25,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:25,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:25,550 INFO L87 Difference]: Start difference. First operand 49054 states and 54205 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:26,808 INFO L93 Difference]: Finished difference Result 96825 states and 106971 transitions. [2024-11-21 22:32:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 618 [2024-11-21 22:32:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:26,854 INFO L225 Difference]: With dead ends: 96825 [2024-11-21 22:32:26,854 INFO L226 Difference]: Without dead ends: 47773 [2024-11-21 22:32:26,879 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 [2024-11-21 22:32:26,880 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 443 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:26,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 698 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:32:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47773 states. [2024-11-21 22:32:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47773 to 45221. [2024-11-21 22:32:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45221 states, 45220 states have (on average 1.0829279080053074) internal successors, (48970), 45220 states have internal predecessors, (48970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45221 states to 45221 states and 48970 transitions. [2024-11-21 22:32:27,411 INFO L78 Accepts]: Start accepts. Automaton has 45221 states and 48970 transitions. Word has length 618 [2024-11-21 22:32:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:27,411 INFO L471 AbstractCegarLoop]: Abstraction has 45221 states and 48970 transitions. [2024-11-21 22:32:27,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 45221 states and 48970 transitions. [2024-11-21 22:32:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2024-11-21 22:32:27,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:27,534 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:32:27,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:32:27,534 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:27,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -835097555, now seen corresponding path program 1 times [2024-11-21 22:32:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241618872] [2024-11-21 22:32:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2024-11-21 22:32:28,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241618872] [2024-11-21 22:32:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241618872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:28,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146467699] [2024-11-21 22:32:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:28,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:28,272 INFO L87 Difference]: Start difference. First operand 45221 states and 48970 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:29,817 INFO L93 Difference]: Finished difference Result 97666 states and 105574 transitions. [2024-11-21 22:32:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 703 [2024-11-21 22:32:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:29,874 INFO L225 Difference]: With dead ends: 97666 [2024-11-21 22:32:29,874 INFO L226 Difference]: Without dead ends: 52018 [2024-11-21 22:32:29,899 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 [2024-11-21 22:32:29,900 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 426 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:29,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 282 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:32:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52018 states. [2024-11-21 22:32:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52018 to 47338. [2024-11-21 22:32:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47338 states, 47337 states have (on average 1.075839195555274) internal successors, (50927), 47337 states have internal predecessors, (50927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47338 states to 47338 states and 50927 transitions. [2024-11-21 22:32:30,590 INFO L78 Accepts]: Start accepts. Automaton has 47338 states and 50927 transitions. Word has length 703 [2024-11-21 22:32:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:30,591 INFO L471 AbstractCegarLoop]: Abstraction has 47338 states and 50927 transitions. [2024-11-21 22:32:30,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 47338 states and 50927 transitions. [2024-11-21 22:32:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-11-21 22:32:30,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:30,627 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:30,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:32:30,627 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:30,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1394250274, now seen corresponding path program 1 times [2024-11-21 22:32:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811343341] [2024-11-21 22:32:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:32:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811343341] [2024-11-21 22:32:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811343341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:31,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437859415] [2024-11-21 22:32:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:31,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:31,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:32:31,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:32:31,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 22:32:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:31,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:32:31,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:32:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:32:32,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:32:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:32:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437859415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:32:33,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:32:33,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-21 22:32:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243805363] [2024-11-21 22:32:33,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:32:33,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 22:32:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 22:32:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:33,661 INFO L87 Difference]: Start difference. First operand 47338 states and 50927 transitions. Second operand has 6 states, 6 states have (on average 219.83333333333334) internal successors, (1319), 6 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:36,611 INFO L93 Difference]: Finished difference Result 102349 states and 110060 transitions. [2024-11-21 22:32:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 22:32:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 219.83333333333334) internal successors, (1319), 6 states have internal predecessors, (1319), 0 states have call successors, (0), 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 807 [2024-11-21 22:32:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:36,663 INFO L225 Difference]: With dead ends: 102349 [2024-11-21 22:32:36,663 INFO L226 Difference]: Without dead ends: 54585 [2024-11-21 22:32:36,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1618 GetRequests, 1612 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:32:36,689 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 682 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:36,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 825 Invalid, 4200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-21 22:32:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54585 states. [2024-11-21 22:32:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54585 to 48185. [2024-11-21 22:32:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48185 states, 48184 states have (on average 1.072991034368255) internal successors, (51701), 48184 states have internal predecessors, (51701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48185 states to 48185 states and 51701 transitions. [2024-11-21 22:32:37,210 INFO L78 Accepts]: Start accepts. Automaton has 48185 states and 51701 transitions. Word has length 807 [2024-11-21 22:32:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:37,211 INFO L471 AbstractCegarLoop]: Abstraction has 48185 states and 51701 transitions. [2024-11-21 22:32:37,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.83333333333334) internal successors, (1319), 6 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 48185 states and 51701 transitions. [2024-11-21 22:32:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2024-11-21 22:32:37,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:37,233 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:37,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 22:32:37,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:37,434 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:37,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:37,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1756133841, now seen corresponding path program 1 times [2024-11-21 22:32:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:37,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631189820] [2024-11-21 22:32:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2024-11-21 22:32:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631189820] [2024-11-21 22:32:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631189820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:38,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:38,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803689212] [2024-11-21 22:32:38,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:38,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:38,163 INFO L87 Difference]: Start difference. First operand 48185 states and 51701 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:39,630 INFO L93 Difference]: Finished difference Result 103155 states and 110383 transitions. [2024-11-21 22:32:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 816 [2024-11-21 22:32:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:39,692 INFO L225 Difference]: With dead ends: 103155 [2024-11-21 22:32:39,692 INFO L226 Difference]: Without dead ends: 51996 [2024-11-21 22:32:39,722 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 [2024-11-21 22:32:39,723 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 449 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:39,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 708 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-21 22:32:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51996 states. [2024-11-21 22:32:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51996 to 50295. [2024-11-21 22:32:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50295 states, 50294 states have (on average 1.063586113651728) internal successors, (53492), 50294 states have internal predecessors, (53492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50295 states to 50295 states and 53492 transitions. [2024-11-21 22:32:40,330 INFO L78 Accepts]: Start accepts. Automaton has 50295 states and 53492 transitions. Word has length 816 [2024-11-21 22:32:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:40,330 INFO L471 AbstractCegarLoop]: Abstraction has 50295 states and 53492 transitions. [2024-11-21 22:32:40,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 50295 states and 53492 transitions. [2024-11-21 22:32:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-21 22:32:40,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:40,356 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:40,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-21 22:32:40,356 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:40,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:40,357 INFO L85 PathProgramCache]: Analyzing trace with hash -820076499, now seen corresponding path program 1 times [2024-11-21 22:32:40,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:40,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457182864] [2024-11-21 22:32:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-11-21 22:32:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457182864] [2024-11-21 22:32:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457182864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:32:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759921694] [2024-11-21 22:32:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:41,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:41,260 INFO L87 Difference]: Start difference. First operand 50295 states and 53492 transitions. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:43,651 INFO L93 Difference]: Finished difference Result 121474 states and 129381 transitions. [2024-11-21 22:32:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 864 [2024-11-21 22:32:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:43,907 INFO L225 Difference]: With dead ends: 121474 [2024-11-21 22:32:43,908 INFO L226 Difference]: Without dead ends: 71181 [2024-11-21 22:32:43,922 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 [2024-11-21 22:32:43,923 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 750 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:43,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 154 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:32:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71181 states. [2024-11-21 22:32:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71181 to 69047. [2024-11-21 22:32:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69047 states, 69046 states have (on average 1.065651884251079) internal successors, (73579), 69046 states have internal predecessors, (73579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69047 states to 69047 states and 73579 transitions. [2024-11-21 22:32:44,777 INFO L78 Accepts]: Start accepts. Automaton has 69047 states and 73579 transitions. Word has length 864 [2024-11-21 22:32:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:44,777 INFO L471 AbstractCegarLoop]: Abstraction has 69047 states and 73579 transitions. [2024-11-21 22:32:44,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 69047 states and 73579 transitions. [2024-11-21 22:32:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2024-11-21 22:32:44,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:44,810 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:44,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-21 22:32:44,810 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:44,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 27333599, now seen corresponding path program 1 times [2024-11-21 22:32:44,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:44,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332801150] [2024-11-21 22:32:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:44,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 1147 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-21 22:32:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:45,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332801150] [2024-11-21 22:32:45,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332801150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:45,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:32:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881532309] [2024-11-21 22:32:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:45,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:45,949 INFO L87 Difference]: Start difference. First operand 69047 states and 73579 transitions. Second operand has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:48,452 INFO L93 Difference]: Finished difference Result 149154 states and 158686 transitions. [2024-11-21 22:32:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:48,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 935 [2024-11-21 22:32:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:48,549 INFO L225 Difference]: With dead ends: 149154 [2024-11-21 22:32:48,550 INFO L226 Difference]: Without dead ends: 80109 [2024-11-21 22:32:48,588 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 [2024-11-21 22:32:48,590 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 605 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:48,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 318 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:32:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80109 states. [2024-11-21 22:32:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80109 to 76278. [2024-11-21 22:32:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76278 states, 76277 states have (on average 1.0627056648793214) internal successors, (81060), 76277 states have internal predecessors, (81060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76278 states to 76278 states and 81060 transitions. [2024-11-21 22:32:49,829 INFO L78 Accepts]: Start accepts. Automaton has 76278 states and 81060 transitions. Word has length 935 [2024-11-21 22:32:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:49,830 INFO L471 AbstractCegarLoop]: Abstraction has 76278 states and 81060 transitions. [2024-11-21 22:32:49,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 76278 states and 81060 transitions. [2024-11-21 22:32:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2024-11-21 22:32:49,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:49,863 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:49,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-21 22:32:49,864 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:49,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1276595123, now seen corresponding path program 1 times [2024-11-21 22:32:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021562554] [2024-11-21 22:32:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-11-21 22:32:50,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:50,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021562554] [2024-11-21 22:32:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021562554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091687172] [2024-11-21 22:32:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:50,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:50,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:50,552 INFO L87 Difference]: Start difference. First operand 76278 states and 81060 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:52,156 INFO L93 Difference]: Finished difference Result 157236 states and 167072 transitions. [2024-11-21 22:32:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 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 936 [2024-11-21 22:32:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:52,253 INFO L225 Difference]: With dead ends: 157236 [2024-11-21 22:32:52,253 INFO L226 Difference]: Without dead ends: 80960 [2024-11-21 22:32:52,296 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 [2024-11-21 22:32:52,297 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 485 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:52,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 206 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:32:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80960 states. [2024-11-21 22:32:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80960 to 76702. [2024-11-21 22:32:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76702 states, 76701 states have (on average 1.0617201861774945) internal successors, (81435), 76701 states have internal predecessors, (81435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76702 states to 76702 states and 81435 transitions. [2024-11-21 22:32:53,607 INFO L78 Accepts]: Start accepts. Automaton has 76702 states and 81435 transitions. Word has length 936 [2024-11-21 22:32:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:53,607 INFO L471 AbstractCegarLoop]: Abstraction has 76702 states and 81435 transitions. [2024-11-21 22:32:53,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 76702 states and 81435 transitions. [2024-11-21 22:32:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2024-11-21 22:32:53,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:53,666 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:53,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-21 22:32:53,666 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:53,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -103478295, now seen corresponding path program 1 times [2024-11-21 22:32:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617288206] [2024-11-21 22:32:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1530 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-21 22:32:54,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617288206] [2024-11-21 22:32:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617288206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:54,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:32:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649251319] [2024-11-21 22:32:54,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:54,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:54,607 INFO L87 Difference]: Start difference. First operand 76702 states and 81435 transitions. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:56,988 INFO L93 Difference]: Finished difference Result 181919 states and 192844 transitions. [2024-11-21 22:32:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 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 967 [2024-11-21 22:32:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:57,112 INFO L225 Difference]: With dead ends: 181919 [2024-11-21 22:32:57,113 INFO L226 Difference]: Without dead ends: 104369 [2024-11-21 22:32:57,173 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 [2024-11-21 22:32:57,174 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 516 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:57,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 173 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-21 22:32:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104369 states. [2024-11-21 22:32:58,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104369 to 97563. [2024-11-21 22:32:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97563 states, 97562 states have (on average 1.056815153440889) internal successors, (103105), 97562 states have internal predecessors, (103105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97563 states to 97563 states and 103105 transitions. [2024-11-21 22:32:58,597 INFO L78 Accepts]: Start accepts. Automaton has 97563 states and 103105 transitions. Word has length 967 [2024-11-21 22:32:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:58,597 INFO L471 AbstractCegarLoop]: Abstraction has 97563 states and 103105 transitions. [2024-11-21 22:32:58,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 97563 states and 103105 transitions. [2024-11-21 22:32:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2024-11-21 22:32:58,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:58,647 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:58,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-21 22:32:58,648 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:58,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2095074387, now seen corresponding path program 1 times [2024-11-21 22:32:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034224017] [2024-11-21 22:32:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1545 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-21 22:32:59,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034224017] [2024-11-21 22:32:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034224017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:59,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:32:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903040626] [2024-11-21 22:32:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:59,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:59,680 INFO L87 Difference]: Start difference. First operand 97563 states and 103105 transitions. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:02,334 INFO L93 Difference]: Finished difference Result 216827 states and 229064 transitions. [2024-11-21 22:33:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:33:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 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 972 [2024-11-21 22:33:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:02,474 INFO L225 Difference]: With dead ends: 216827 [2024-11-21 22:33:02,474 INFO L226 Difference]: Without dead ends: 119266 [2024-11-21 22:33:02,533 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 [2024-11-21 22:33:02,534 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 534 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:02,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 149 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:33:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119266 states. [2024-11-21 22:33:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119266 to 97138. [2024-11-21 22:33:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97138 states, 97137 states have (on average 1.0580520296076674) internal successors, (102776), 97137 states have internal predecessors, (102776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97138 states to 97138 states and 102776 transitions. [2024-11-21 22:33:03,792 INFO L78 Accepts]: Start accepts. Automaton has 97138 states and 102776 transitions. Word has length 972 [2024-11-21 22:33:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:03,793 INFO L471 AbstractCegarLoop]: Abstraction has 97138 states and 102776 transitions. [2024-11-21 22:33:03,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 97138 states and 102776 transitions. [2024-11-21 22:33:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-21 22:33:03,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:03,846 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:03,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-21 22:33:03,846 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:03,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1889966909, now seen corresponding path program 1 times [2024-11-21 22:33:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114458154] [2024-11-21 22:33:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 1765 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-21 22:33:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114458154] [2024-11-21 22:33:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114458154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 22:33:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189741733] [2024-11-21 22:33:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:05,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:33:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:33:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:33:05,008 INFO L87 Difference]: Start difference. First operand 97138 states and 102776 transitions. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)