./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d33c1f18af8463c39a69fa160e98d9892e84f7d8b10911d6b0c55a462978880c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:46:16,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:46:16,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:46:16,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:46:16,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:46:16,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:46:16,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:46:16,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:46:16,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:46:16,206 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:46:16,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:46:16,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:46:16,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:46:16,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:46:16,210 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:46:16,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:46:16,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:46:16,211 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:46:16,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:46:16,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:46:16,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:46:16,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:46:16,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:46:16,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:46:16,213 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:46:16,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:46:16,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:46:16,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:46:16,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:46:16,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:46:16,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:46:16,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:46:16,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:46:16,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:46:16,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:46:16,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:46:16,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:46:16,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d33c1f18af8463c39a69fa160e98d9892e84f7d8b10911d6b0c55a462978880c [2024-10-24 01:46:16,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:46:16,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:46:16,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:46:16,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:46:16,436 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:46:16,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:46:17,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:46:17,972 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:46:17,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:46:17,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d55568fa7/c906cdd1fecf477991db0323a0e32251/FLAGa2a104263 [2024-10-24 01:46:18,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d55568fa7/c906cdd1fecf477991db0323a0e32251 [2024-10-24 01:46:18,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:46:18,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:46:18,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:46:18,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:46:18,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:46:18,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c20656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18, skipping insertion in model container [2024-10-24 01:46:18,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,427 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:46:18,607 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2024-10-24 01:46:18,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:46:18,641 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:46:18,663 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2024-10-24 01:46:18,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:46:18,686 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:46:18,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18 WrapperNode [2024-10-24 01:46:18,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:46:18,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:46:18,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:46:18,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:46:18,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,719 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 291 [2024-10-24 01:46:18,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:46:18,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:46:18,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:46:18,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:46:18,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,747 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 01:46:18,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:46:18,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:46:18,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:46:18,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:46:18,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (1/1) ... [2024-10-24 01:46:18,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:46:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:46:18,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:46:18,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:46:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:46:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:46:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:46:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:46:18,972 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:46:18,974 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:46:19,255 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-10-24 01:46:19,255 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:46:19,294 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:46:19,295 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:46:19,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:19 BoogieIcfgContainer [2024-10-24 01:46:19,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:46:19,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:46:19,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:46:19,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:46:19,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:18" (1/3) ... [2024-10-24 01:46:19,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65242409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:19, skipping insertion in model container [2024-10-24 01:46:19,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:18" (2/3) ... [2024-10-24 01:46:19,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65242409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:19, skipping insertion in model container [2024-10-24 01:46:19,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:19" (3/3) ... [2024-10-24 01:46:19,302 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:46:19,315 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:46:19,315 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:46:19,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:46:19,365 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;@17653166, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:46:19,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:46:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 01:46:19,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:19,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:46:19,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:19,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 358399884, now seen corresponding path program 1 times [2024-10-24 01:46:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641560409] [2024-10-24 01:46:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:19,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641560409] [2024-10-24 01:46:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641560409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:19,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:46:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247037251] [2024-10-24 01:46:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:19,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:46:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:46:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:19,710 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:19,768 INFO L93 Difference]: Finished difference Result 142 states and 226 transitions. [2024-10-24 01:46:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:46:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-24 01:46:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:19,780 INFO L225 Difference]: With dead ends: 142 [2024-10-24 01:46:19,780 INFO L226 Difference]: Without dead ends: 94 [2024-10-24 01:46:19,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:19,787 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 60 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:19,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-24 01:46:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2024-10-24 01:46:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 91 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2024-10-24 01:46:19,822 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 36 [2024-10-24 01:46:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:19,822 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2024-10-24 01:46:19,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2024-10-24 01:46:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 01:46:19,824 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:19,824 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] [2024-10-24 01:46:19,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:46:19,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:19,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1160274850, now seen corresponding path program 1 times [2024-10-24 01:46:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074713574] [2024-10-24 01:46:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074713574] [2024-10-24 01:46:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074713574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:46:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703187734] [2024-10-24 01:46:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:19,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:46:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:46:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:19,940 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:19,958 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2024-10-24 01:46:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:46:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-10-24 01:46:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:19,960 INFO L225 Difference]: With dead ends: 224 [2024-10-24 01:46:19,963 INFO L226 Difference]: Without dead ends: 150 [2024-10-24 01:46:19,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:19,964 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:19,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-24 01:46:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2024-10-24 01:46:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5170068027210883) internal successors, (223), 147 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 223 transitions. [2024-10-24 01:46:19,981 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 223 transitions. Word has length 37 [2024-10-24 01:46:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:19,982 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 223 transitions. [2024-10-24 01:46:19,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 223 transitions. [2024-10-24 01:46:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 01:46:19,984 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:19,984 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] [2024-10-24 01:46:19,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:46:19,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:19,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1494588776, now seen corresponding path program 1 times [2024-10-24 01:46:19,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:19,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869280730] [2024-10-24 01:46:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:19,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:20,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869280730] [2024-10-24 01:46:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869280730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884642584] [2024-10-24 01:46:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:20,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:20,140 INFO L87 Difference]: Start difference. First operand 148 states and 223 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:20,266 INFO L93 Difference]: Finished difference Result 928 states and 1453 transitions. [2024-10-24 01:46:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:46:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-10-24 01:46:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:20,276 INFO L225 Difference]: With dead ends: 928 [2024-10-24 01:46:20,276 INFO L226 Difference]: Without dead ends: 798 [2024-10-24 01:46:20,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:46:20,279 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:20,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 573 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:46:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-10-24 01:46:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 276. [2024-10-24 01:46:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.5236363636363637) internal successors, (419), 275 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 419 transitions. [2024-10-24 01:46:20,298 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 419 transitions. Word has length 38 [2024-10-24 01:46:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:20,299 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 419 transitions. [2024-10-24 01:46:20,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 419 transitions. [2024-10-24 01:46:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 01:46:20,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:20,300 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] [2024-10-24 01:46:20,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:46:20,300 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:20,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 858913764, now seen corresponding path program 1 times [2024-10-24 01:46:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141229928] [2024-10-24 01:46:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:20,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141229928] [2024-10-24 01:46:20,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141229928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:20,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:20,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:46:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445314065] [2024-10-24 01:46:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:20,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:46:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:46:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:20,394 INFO L87 Difference]: Start difference. First operand 276 states and 419 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:20,415 INFO L93 Difference]: Finished difference Result 748 states and 1145 transitions. [2024-10-24 01:46:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:46:20,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-10-24 01:46:20,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:20,418 INFO L225 Difference]: With dead ends: 748 [2024-10-24 01:46:20,418 INFO L226 Difference]: Without dead ends: 490 [2024-10-24 01:46:20,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:20,419 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:20,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2024-10-24 01:46:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 480. [2024-10-24 01:46:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.4926931106471817) internal successors, (715), 479 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions. [2024-10-24 01:46:20,441 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 40 [2024-10-24 01:46:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:20,442 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 715 transitions. [2024-10-24 01:46:20,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions. [2024-10-24 01:46:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 01:46:20,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:20,443 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] [2024-10-24 01:46:20,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:46:20,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:20,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 879916419, now seen corresponding path program 1 times [2024-10-24 01:46:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320848832] [2024-10-24 01:46:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:20,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320848832] [2024-10-24 01:46:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320848832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:20,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692264314] [2024-10-24 01:46:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:20,649 INFO L87 Difference]: Start difference. First operand 480 states and 715 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:20,700 INFO L93 Difference]: Finished difference Result 944 states and 1413 transitions. [2024-10-24 01:46:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:20,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-10-24 01:46:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:20,702 INFO L225 Difference]: With dead ends: 944 [2024-10-24 01:46:20,702 INFO L226 Difference]: Without dead ends: 482 [2024-10-24 01:46:20,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:46:20,707 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 130 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:20,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 202 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-10-24 01:46:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480. [2024-10-24 01:46:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.475991649269311) internal successors, (707), 479 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 707 transitions. [2024-10-24 01:46:20,717 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 707 transitions. Word has length 40 [2024-10-24 01:46:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:20,717 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 707 transitions. [2024-10-24 01:46:20,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 707 transitions. [2024-10-24 01:46:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 01:46:20,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:20,719 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] [2024-10-24 01:46:20,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:46:20,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:20,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1505695790, now seen corresponding path program 1 times [2024-10-24 01:46:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284283561] [2024-10-24 01:46:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:20,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284283561] [2024-10-24 01:46:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284283561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:46:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832831812] [2024-10-24 01:46:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:20,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:20,790 INFO L87 Difference]: Start difference. First operand 480 states and 707 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:20,877 INFO L93 Difference]: Finished difference Result 1200 states and 1793 transitions. [2024-10-24 01:46:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:20,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-24 01:46:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:20,880 INFO L225 Difference]: With dead ends: 1200 [2024-10-24 01:46:20,880 INFO L226 Difference]: Without dead ends: 738 [2024-10-24 01:46:20,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:46:20,883 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 353 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:20,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:46:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-10-24 01:46:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 736. [2024-10-24 01:46:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4789115646258504) internal successors, (1087), 735 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1087 transitions. [2024-10-24 01:46:20,892 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1087 transitions. Word has length 41 [2024-10-24 01:46:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:20,892 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1087 transitions. [2024-10-24 01:46:20,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1087 transitions. [2024-10-24 01:46:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 01:46:20,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:20,895 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] [2024-10-24 01:46:20,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:46:20,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:20,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1633781097, now seen corresponding path program 1 times [2024-10-24 01:46:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944101554] [2024-10-24 01:46:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944101554] [2024-10-24 01:46:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944101554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:46:20,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485401130] [2024-10-24 01:46:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:20,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:20,970 INFO L87 Difference]: Start difference. First operand 736 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,015 INFO L93 Difference]: Finished difference Result 1454 states and 2156 transitions. [2024-10-24 01:46:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-24 01:46:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,019 INFO L225 Difference]: With dead ends: 1454 [2024-10-24 01:46:21,019 INFO L226 Difference]: Without dead ends: 736 [2024-10-24 01:46:21,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:46:21,021 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 209 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-10-24 01:46:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2024-10-24 01:46:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4625850340136055) internal successors, (1075), 735 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1075 transitions. [2024-10-24 01:46:21,032 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1075 transitions. Word has length 41 [2024-10-24 01:46:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,032 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1075 transitions. [2024-10-24 01:46:21,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1075 transitions. [2024-10-24 01:46:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 01:46:21,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,033 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] [2024-10-24 01:46:21,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:46:21,034 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1795653810, now seen corresponding path program 1 times [2024-10-24 01:46:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174561167] [2024-10-24 01:46:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:21,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174561167] [2024-10-24 01:46:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174561167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:21,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:21,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:21,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217969821] [2024-10-24 01:46:21,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:21,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:21,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:21,249 INFO L87 Difference]: Start difference. First operand 736 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,269 INFO L93 Difference]: Finished difference Result 770 states and 1124 transitions. [2024-10-24 01:46:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-24 01:46:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,274 INFO L225 Difference]: With dead ends: 770 [2024-10-24 01:46:21,274 INFO L226 Difference]: Without dead ends: 768 [2024-10-24 01:46:21,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:21,275 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 308 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-10-24 01:46:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2024-10-24 01:46:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.438070404172099) internal successors, (1103), 767 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1103 transitions. [2024-10-24 01:46:21,287 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1103 transitions. Word has length 41 [2024-10-24 01:46:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,288 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 1103 transitions. [2024-10-24 01:46:21,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1103 transitions. [2024-10-24 01:46:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 01:46:21,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,289 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] [2024-10-24 01:46:21,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:46:21,289 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1846258053, now seen corresponding path program 1 times [2024-10-24 01:46:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787264707] [2024-10-24 01:46:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:21,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:21,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787264707] [2024-10-24 01:46:21,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787264707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:21,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:21,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:46:21,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669289504] [2024-10-24 01:46:21,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:21,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:46:21,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:46:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:21,318 INFO L87 Difference]: Start difference. First operand 768 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,332 INFO L93 Difference]: Finished difference Result 1703 states and 2477 transitions. [2024-10-24 01:46:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:46:21,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-24 01:46:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,335 INFO L225 Difference]: With dead ends: 1703 [2024-10-24 01:46:21,335 INFO L226 Difference]: Without dead ends: 1156 [2024-10-24 01:46:21,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:21,336 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 183 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-10-24 01:46:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1154. [2024-10-24 01:46:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.430182133564614) internal successors, (1649), 1153 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1649 transitions. [2024-10-24 01:46:21,352 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1649 transitions. Word has length 41 [2024-10-24 01:46:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,353 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1649 transitions. [2024-10-24 01:46:21,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1649 transitions. [2024-10-24 01:46:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:46:21,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,354 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:46:21,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:46:21,355 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1413176550, now seen corresponding path program 1 times [2024-10-24 01:46:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302425354] [2024-10-24 01:46:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:46:21,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:21,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302425354] [2024-10-24 01:46:21,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302425354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:21,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:21,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:21,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42988016] [2024-10-24 01:46:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:21,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:21,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:21,439 INFO L87 Difference]: Start difference. First operand 1154 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,518 INFO L93 Difference]: Finished difference Result 4922 states and 7047 transitions. [2024-10-24 01:46:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 01:46:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,527 INFO L225 Difference]: With dead ends: 4922 [2024-10-24 01:46:21,527 INFO L226 Difference]: Without dead ends: 3788 [2024-10-24 01:46:21,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:46:21,530 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 225 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 345 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:46:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2024-10-24 01:46:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2286. [2024-10-24 01:46:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 1.425382932166302) internal successors, (3257), 2285 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3257 transitions. [2024-10-24 01:46:21,571 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3257 transitions. Word has length 60 [2024-10-24 01:46:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,572 INFO L471 AbstractCegarLoop]: Abstraction has 2286 states and 3257 transitions. [2024-10-24 01:46:21,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3257 transitions. [2024-10-24 01:46:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:46:21,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,573 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:46:21,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:46:21,573 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1727844640, now seen corresponding path program 1 times [2024-10-24 01:46:21,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953323337] [2024-10-24 01:46:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 01:46:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953323337] [2024-10-24 01:46:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953323337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:21,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500639084] [2024-10-24 01:46:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:21,643 INFO L87 Difference]: Start difference. First operand 2286 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,707 INFO L93 Difference]: Finished difference Result 6054 states and 8655 transitions. [2024-10-24 01:46:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 01:46:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,718 INFO L225 Difference]: With dead ends: 6054 [2024-10-24 01:46:21,718 INFO L226 Difference]: Without dead ends: 4920 [2024-10-24 01:46:21,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:46:21,721 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 382 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2024-10-24 01:46:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 3986. [2024-10-24 01:46:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3985 states have (on average 1.4180677540777917) internal successors, (5651), 3985 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5651 transitions. [2024-10-24 01:46:21,767 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5651 transitions. Word has length 60 [2024-10-24 01:46:21,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,767 INFO L471 AbstractCegarLoop]: Abstraction has 3986 states and 5651 transitions. [2024-10-24 01:46:21,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5651 transitions. [2024-10-24 01:46:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:46:21,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,768 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:46:21,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:46:21,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -996358177, now seen corresponding path program 1 times [2024-10-24 01:46:21,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737781508] [2024-10-24 01:46:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:46:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737781508] [2024-10-24 01:46:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737781508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:21,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:46:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342970687] [2024-10-24 01:46:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:21,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:46:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:46:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:46:21,828 INFO L87 Difference]: Start difference. First operand 3986 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:21,900 INFO L93 Difference]: Finished difference Result 6778 states and 9711 transitions. [2024-10-24 01:46:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:46:21,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:46:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:21,916 INFO L225 Difference]: With dead ends: 6778 [2024-10-24 01:46:21,917 INFO L226 Difference]: Without dead ends: 5848 [2024-10-24 01:46:21,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:46:21,921 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 215 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:21,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2024-10-24 01:46:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4914. [2024-10-24 01:46:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4913 states have (on average 1.4221453287197232) internal successors, (6987), 4913 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 6987 transitions. [2024-10-24 01:46:21,987 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 6987 transitions. Word has length 61 [2024-10-24 01:46:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:21,987 INFO L471 AbstractCegarLoop]: Abstraction has 4914 states and 6987 transitions. [2024-10-24 01:46:21,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 6987 transitions. [2024-10-24 01:46:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:46:21,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:21,989 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:46:21,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:46:21,989 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:21,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -47821439, now seen corresponding path program 1 times [2024-10-24 01:46:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813481292] [2024-10-24 01:46:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813481292] [2024-10-24 01:46:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813481292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:46:22,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:46:22,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:46:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21203776] [2024-10-24 01:46:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:46:22,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:46:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:46:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:22,056 INFO L87 Difference]: Start difference. First operand 4914 states and 6987 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:22,084 INFO L93 Difference]: Finished difference Result 9120 states and 13032 transitions. [2024-10-24 01:46:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:46:22,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:46:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:22,094 INFO L225 Difference]: With dead ends: 9120 [2024-10-24 01:46:22,095 INFO L226 Difference]: Without dead ends: 4226 [2024-10-24 01:46:22,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:46:22,100 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:22,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:46:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2024-10-24 01:46:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4224. [2024-10-24 01:46:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 1.4186597205777882) internal successors, (5991), 4223 states have internal predecessors, (5991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5991 transitions. [2024-10-24 01:46:22,155 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5991 transitions. Word has length 62 [2024-10-24 01:46:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:22,155 INFO L471 AbstractCegarLoop]: Abstraction has 4224 states and 5991 transitions. [2024-10-24 01:46:22,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5991 transitions. [2024-10-24 01:46:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:46:22,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:22,158 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:46:22,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:46:22,158 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:22,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1761938601, now seen corresponding path program 1 times [2024-10-24 01:46:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:22,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326006767] [2024-10-24 01:46:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:22,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326006767] [2024-10-24 01:46:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326006767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:46:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744522557] [2024-10-24 01:46:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:46:22,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:46:22,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:46:22,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:46:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:22,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 01:46:22,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:46:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:46:22,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:46:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:46:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744522557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:46:22,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:46:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 14 [2024-10-24 01:46:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404434783] [2024-10-24 01:46:22,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:46:22,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 01:46:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 01:46:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-24 01:46:22,886 INFO L87 Difference]: Start difference. First operand 4224 states and 5991 transitions. Second operand has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:46:24,195 INFO L93 Difference]: Finished difference Result 26605 states and 37121 transitions. [2024-10-24 01:46:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-24 01:46:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:46:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:46:24,246 INFO L225 Difference]: With dead ends: 26605 [2024-10-24 01:46:24,246 INFO L226 Difference]: Without dead ends: 22415 [2024-10-24 01:46:24,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=455, Invalid=1995, Unknown=0, NotChecked=0, Total=2450 [2024-10-24 01:46:24,255 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 1119 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:46:24,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 678 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 01:46:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22415 states. [2024-10-24 01:46:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22415 to 18736. [2024-10-24 01:46:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18736 states, 18735 states have (on average 1.3375500400320257) internal successors, (25059), 18735 states have internal predecessors, (25059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18736 states to 18736 states and 25059 transitions. [2024-10-24 01:46:24,618 INFO L78 Accepts]: Start accepts. Automaton has 18736 states and 25059 transitions. Word has length 62 [2024-10-24 01:46:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:46:24,618 INFO L471 AbstractCegarLoop]: Abstraction has 18736 states and 25059 transitions. [2024-10-24 01:46:24,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:46:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 18736 states and 25059 transitions. [2024-10-24 01:46:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:46:24,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:46:24,621 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:46:24,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:46:24,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 01:46:24,822 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:46:24,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:46:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1584133295, now seen corresponding path program 1 times [2024-10-24 01:46:24,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:46:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961743849] [2024-10-24 01:46:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:46:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:46:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961743849] [2024-10-24 01:46:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961743849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:46:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898497286] [2024-10-24 01:46:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:46:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:46:25,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:46:25,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:46:25,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:46:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:46:25,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 01:46:25,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:46:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:26,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:46:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:46:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898497286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:46:27,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:46:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 36 [2024-10-24 01:46:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797857309] [2024-10-24 01:46:27,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:46:27,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-24 01:46:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:46:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-24 01:46:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 01:46:27,324 INFO L87 Difference]: Start difference. First operand 18736 states and 25059 transitions. Second operand has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:05,151 INFO L93 Difference]: Finished difference Result 274867 states and 362313 transitions. [2024-10-24 01:47:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 622 states. [2024-10-24 01:47:05,151 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 01:47:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:05,519 INFO L225 Difference]: With dead ends: 274867 [2024-10-24 01:47:05,520 INFO L226 Difference]: Without dead ends: 256893 [2024-10-24 01:47:05,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 653 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214556 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=49628, Invalid=378742, Unknown=0, NotChecked=0, Total=428370 [2024-10-24 01:47:05,578 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 14372 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14372 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 3980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:05,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14372 Valid, 1923 Invalid, 3980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 3527 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 01:47:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256893 states. [2024-10-24 01:47:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256893 to 100823. [2024-10-24 01:47:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100823 states, 100822 states have (on average 1.3351847810993633) internal successors, (134616), 100822 states have internal predecessors, (134616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100823 states to 100823 states and 134616 transitions. [2024-10-24 01:47:07,697 INFO L78 Accepts]: Start accepts. Automaton has 100823 states and 134616 transitions. Word has length 63 [2024-10-24 01:47:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:07,697 INFO L471 AbstractCegarLoop]: Abstraction has 100823 states and 134616 transitions. [2024-10-24 01:47:07,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 100823 states and 134616 transitions. [2024-10-24 01:47:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:47:07,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:07,699 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:07,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 01:47:07,900 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,SelfDestructingSolverStorable14 [2024-10-24 01:47:07,900 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:07,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1258595794, now seen corresponding path program 1 times [2024-10-24 01:47:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066738755] [2024-10-24 01:47:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:08,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066738755] [2024-10-24 01:47:08,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066738755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462887762] [2024-10-24 01:47:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:08,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:47:08,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:47:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:08,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 01:47:08,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:08,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462887762] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:08,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:08,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-24 01:47:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372746904] [2024-10-24 01:47:08,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:08,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 01:47:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 01:47:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-24 01:47:08,738 INFO L87 Difference]: Start difference. First operand 100823 states and 134616 transitions. Second operand has 20 states, 20 states have (on average 7.4) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:09,979 INFO L93 Difference]: Finished difference Result 225138 states and 301831 transitions. [2024-10-24 01:47:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 01:47:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 01:47:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:10,126 INFO L225 Difference]: With dead ends: 225138 [2024-10-24 01:47:10,126 INFO L226 Difference]: Without dead ends: 136409 [2024-10-24 01:47:10,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 01:47:10,160 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 988 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:10,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 430 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:47:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136409 states. [2024-10-24 01:47:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136409 to 111188. [2024-10-24 01:47:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111188 states, 111187 states have (on average 1.3319992445159956) internal successors, (148101), 111187 states have internal predecessors, (148101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111188 states to 111188 states and 148101 transitions. [2024-10-24 01:47:11,718 INFO L78 Accepts]: Start accepts. Automaton has 111188 states and 148101 transitions. Word has length 64 [2024-10-24 01:47:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:11,718 INFO L471 AbstractCegarLoop]: Abstraction has 111188 states and 148101 transitions. [2024-10-24 01:47:11,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 111188 states and 148101 transitions. [2024-10-24 01:47:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:47:11,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:11,720 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:11,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 01:47:11,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:11,921 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:11,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -245514269, now seen corresponding path program 1 times [2024-10-24 01:47:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873682981] [2024-10-24 01:47:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:47:11,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:11,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873682981] [2024-10-24 01:47:11,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873682981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:47:11,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:47:11,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:47:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072644026] [2024-10-24 01:47:11,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:47:11,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:47:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:47:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:11,953 INFO L87 Difference]: Start difference. First operand 111188 states and 148101 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:12,543 INFO L93 Difference]: Finished difference Result 198826 states and 265299 transitions. [2024-10-24 01:47:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:47:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 01:47:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:12,625 INFO L225 Difference]: With dead ends: 198826 [2024-10-24 01:47:12,625 INFO L226 Difference]: Without dead ends: 87869 [2024-10-24 01:47:12,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:12,657 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 53 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:12,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 97 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:47:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87869 states. [2024-10-24 01:47:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87869 to 87869. [2024-10-24 01:47:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87869 states, 87868 states have (on average 1.3163836664087039) internal successors, (115668), 87868 states have internal predecessors, (115668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87869 states to 87869 states and 115668 transitions. [2024-10-24 01:47:13,703 INFO L78 Accepts]: Start accepts. Automaton has 87869 states and 115668 transitions. Word has length 64 [2024-10-24 01:47:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:13,703 INFO L471 AbstractCegarLoop]: Abstraction has 87869 states and 115668 transitions. [2024-10-24 01:47:13,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 87869 states and 115668 transitions. [2024-10-24 01:47:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:47:13,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:13,705 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:47:13,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:47:13,705 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:13,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -748914802, now seen corresponding path program 1 times [2024-10-24 01:47:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258344550] [2024-10-24 01:47:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:13,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258344550] [2024-10-24 01:47:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258344550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:47:13,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:47:13,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:47:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818141944] [2024-10-24 01:47:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:47:13,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:47:13,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:47:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:13,758 INFO L87 Difference]: Start difference. First operand 87869 states and 115668 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:14,199 INFO L93 Difference]: Finished difference Result 132832 states and 174432 transitions. [2024-10-24 01:47:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:47:14,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:47:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:14,253 INFO L225 Difference]: With dead ends: 132832 [2024-10-24 01:47:14,253 INFO L226 Difference]: Without dead ends: 49199 [2024-10-24 01:47:14,296 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 [2024-10-24 01:47:14,296 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 27 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:14,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 152 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:47:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49199 states. [2024-10-24 01:47:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49199 to 49197. [2024-10-24 01:47:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49197 states, 49196 states have (on average 1.2872997804699569) internal successors, (63330), 49196 states have internal predecessors, (63330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49197 states to 49197 states and 63330 transitions. [2024-10-24 01:47:14,862 INFO L78 Accepts]: Start accepts. Automaton has 49197 states and 63330 transitions. Word has length 65 [2024-10-24 01:47:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:14,863 INFO L471 AbstractCegarLoop]: Abstraction has 49197 states and 63330 transitions. [2024-10-24 01:47:14,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand 49197 states and 63330 transitions. [2024-10-24 01:47:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:47:14,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:14,864 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:14,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:47:14,864 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:14,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1458928242, now seen corresponding path program 1 times [2024-10-24 01:47:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476823466] [2024-10-24 01:47:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:15,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476823466] [2024-10-24 01:47:15,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476823466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:15,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336604230] [2024-10-24 01:47:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:15,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:15,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:15,981 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) [2024-10-24 01:47:15,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 01:47:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:16,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-24 01:47:16,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:18,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336604230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:19,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 24] total 65 [2024-10-24 01:47:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669207603] [2024-10-24 01:47:19,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:19,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-10-24 01:47:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-10-24 01:47:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=3740, Unknown=0, NotChecked=0, Total=4160 [2024-10-24 01:47:19,814 INFO L87 Difference]: Start difference. First operand 49197 states and 63330 transitions. Second operand has 65 states, 65 states have (on average 2.753846153846154) internal successors, (179), 65 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:28,688 INFO L93 Difference]: Finished difference Result 132231 states and 170792 transitions. [2024-10-24 01:47:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-24 01:47:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.753846153846154) internal successors, (179), 65 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:47:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:28,799 INFO L225 Difference]: With dead ends: 132231 [2024-10-24 01:47:28,800 INFO L226 Difference]: Without dead ends: 109288 [2024-10-24 01:47:28,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6980 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3098, Invalid=20464, Unknown=0, NotChecked=0, Total=23562 [2024-10-24 01:47:28,832 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 3365 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:28,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3365 Valid, 4286 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 01:47:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109288 states. [2024-10-24 01:47:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109288 to 63337. [2024-10-24 01:47:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63337 states, 63336 states have (on average 1.2837406846027535) internal successors, (81307), 63336 states have internal predecessors, (81307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63337 states to 63337 states and 81307 transitions. [2024-10-24 01:47:29,701 INFO L78 Accepts]: Start accepts. Automaton has 63337 states and 81307 transitions. Word has length 65 [2024-10-24 01:47:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:29,701 INFO L471 AbstractCegarLoop]: Abstraction has 63337 states and 81307 transitions. [2024-10-24 01:47:29,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.753846153846154) internal successors, (179), 65 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 63337 states and 81307 transitions. [2024-10-24 01:47:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:47:29,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:29,703 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:29,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 01:47:29,903 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 [2024-10-24 01:47:29,903 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:29,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 235002897, now seen corresponding path program 1 times [2024-10-24 01:47:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636510433] [2024-10-24 01:47:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:47:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636510433] [2024-10-24 01:47:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636510433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:47:29,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:47:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:47:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309525699] [2024-10-24 01:47:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:47:29,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:47:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:47:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:29,935 INFO L87 Difference]: Start difference. First operand 63337 states and 81307 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:30,134 INFO L93 Difference]: Finished difference Result 99178 states and 127854 transitions. [2024-10-24 01:47:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:47:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 01:47:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:30,176 INFO L225 Difference]: With dead ends: 99178 [2024-10-24 01:47:30,177 INFO L226 Difference]: Without dead ends: 36775 [2024-10-24 01:47:30,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:30,208 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 47 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:30,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 73 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:47:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36775 states. [2024-10-24 01:47:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36775 to 36470. [2024-10-24 01:47:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36470 states, 36469 states have (on average 1.2741232279470236) internal successors, (46466), 36469 states have internal predecessors, (46466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36470 states to 36470 states and 46466 transitions. [2024-10-24 01:47:30,933 INFO L78 Accepts]: Start accepts. Automaton has 36470 states and 46466 transitions. Word has length 65 [2024-10-24 01:47:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:30,933 INFO L471 AbstractCegarLoop]: Abstraction has 36470 states and 46466 transitions. [2024-10-24 01:47:30,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36470 states and 46466 transitions. [2024-10-24 01:47:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 01:47:30,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:30,934 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:30,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:47:30,934 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:30,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash -394454054, now seen corresponding path program 1 times [2024-10-24 01:47:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:30,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174129049] [2024-10-24 01:47:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:30,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174129049] [2024-10-24 01:47:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174129049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817279666] [2024-10-24 01:47:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:31,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:47:31,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 01:47:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:31,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 01:47:31,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:31,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817279666] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:32,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:32,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 28 [2024-10-24 01:47:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056583850] [2024-10-24 01:47:32,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:32,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 01:47:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 01:47:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-10-24 01:47:32,489 INFO L87 Difference]: Start difference. First operand 36470 states and 46466 transitions. Second operand has 29 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:33,100 INFO L93 Difference]: Finished difference Result 70452 states and 90276 transitions. [2024-10-24 01:47:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 01:47:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 01:47:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:33,157 INFO L225 Difference]: With dead ends: 70452 [2024-10-24 01:47:33,157 INFO L226 Difference]: Without dead ends: 54972 [2024-10-24 01:47:33,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 01:47:33,180 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 746 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:33,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 982 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:47:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54972 states. [2024-10-24 01:47:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54972 to 36472. [2024-10-24 01:47:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36472 states, 36471 states have (on average 1.2741356145978997) internal successors, (46469), 36471 states have internal predecessors, (46469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36472 states to 36472 states and 46469 transitions. [2024-10-24 01:47:33,719 INFO L78 Accepts]: Start accepts. Automaton has 36472 states and 46469 transitions. Word has length 66 [2024-10-24 01:47:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:33,719 INFO L471 AbstractCegarLoop]: Abstraction has 36472 states and 46469 transitions. [2024-10-24 01:47:33,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36472 states and 46469 transitions. [2024-10-24 01:47:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 01:47:33,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:33,720 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:47:33,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 01:47:33,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:33,921 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:33,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 897310699, now seen corresponding path program 1 times [2024-10-24 01:47:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815654725] [2024-10-24 01:47:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:47:33,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815654725] [2024-10-24 01:47:33,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815654725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:47:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:47:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:47:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457086830] [2024-10-24 01:47:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:47:33,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:47:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:47:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:33,953 INFO L87 Difference]: Start difference. First operand 36472 states and 46469 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:34,205 INFO L93 Difference]: Finished difference Result 68726 states and 87880 transitions. [2024-10-24 01:47:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:47:34,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 01:47:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:34,240 INFO L225 Difference]: With dead ends: 68726 [2024-10-24 01:47:34,241 INFO L226 Difference]: Without dead ends: 32447 [2024-10-24 01:47:34,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:34,259 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 50 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:34,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 94 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:47:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32447 states. [2024-10-24 01:47:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32447 to 32447. [2024-10-24 01:47:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32447 states, 32446 states have (on average 1.2643469148739443) internal successors, (41023), 32446 states have internal predecessors, (41023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32447 states to 32447 states and 41023 transitions. [2024-10-24 01:47:34,530 INFO L78 Accepts]: Start accepts. Automaton has 32447 states and 41023 transitions. Word has length 66 [2024-10-24 01:47:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:34,531 INFO L471 AbstractCegarLoop]: Abstraction has 32447 states and 41023 transitions. [2024-10-24 01:47:34,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 32447 states and 41023 transitions. [2024-10-24 01:47:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 01:47:34,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:34,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:47:34,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:47:34,533 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:34,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1482710345, now seen corresponding path program 2 times [2024-10-24 01:47:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722862363] [2024-10-24 01:47:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722862363] [2024-10-24 01:47:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722862363] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562110068] [2024-10-24 01:47:34,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 01:47:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:34,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:47:34,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 01:47:34,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 01:47:34,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 01:47:34,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 01:47:34,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:34,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562110068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:34,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-24 01:47:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453815413] [2024-10-24 01:47:34,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:34,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 01:47:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 01:47:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:47:34,964 INFO L87 Difference]: Start difference. First operand 32447 states and 41023 transitions. Second operand has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:35,160 INFO L93 Difference]: Finished difference Result 51625 states and 65493 transitions. [2024-10-24 01:47:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:47:35,161 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-10-24 01:47:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:35,189 INFO L225 Difference]: With dead ends: 51625 [2024-10-24 01:47:35,189 INFO L226 Difference]: Without dead ends: 29710 [2024-10-24 01:47:35,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-10-24 01:47:35,204 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 140 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:35,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 309 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:47:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29710 states. [2024-10-24 01:47:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29710 to 29708. [2024-10-24 01:47:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29708 states, 29707 states have (on average 1.2462382603426803) internal successors, (37022), 29707 states have internal predecessors, (37022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29708 states to 29708 states and 37022 transitions. [2024-10-24 01:47:35,505 INFO L78 Accepts]: Start accepts. Automaton has 29708 states and 37022 transitions. Word has length 87 [2024-10-24 01:47:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:35,505 INFO L471 AbstractCegarLoop]: Abstraction has 29708 states and 37022 transitions. [2024-10-24 01:47:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 29708 states and 37022 transitions. [2024-10-24 01:47:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-24 01:47:35,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:35,508 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:47:35,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 01:47:35,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:35,712 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:35,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1721877772, now seen corresponding path program 1 times [2024-10-24 01:47:35,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:35,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872073398] [2024-10-24 01:47:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 01:47:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872073398] [2024-10-24 01:47:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872073398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:47:35,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:47:35,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:47:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973580936] [2024-10-24 01:47:35,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:47:35,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:47:35,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:35,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:47:35,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:35,780 INFO L87 Difference]: Start difference. First operand 29708 states and 37022 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:35,851 INFO L93 Difference]: Finished difference Result 42295 states and 52758 transitions. [2024-10-24 01:47:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:47:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-24 01:47:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:35,863 INFO L225 Difference]: With dead ends: 42295 [2024-10-24 01:47:35,863 INFO L226 Difference]: Without dead ends: 13080 [2024-10-24 01:47:35,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:47:35,876 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 22 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:35,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:47:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13080 states. [2024-10-24 01:47:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13080 to 13078. [2024-10-24 01:47:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13078 states, 13077 states have (on average 1.230251586755372) internal successors, (16088), 13077 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 16088 transitions. [2024-10-24 01:47:35,968 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 16088 transitions. Word has length 109 [2024-10-24 01:47:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:35,969 INFO L471 AbstractCegarLoop]: Abstraction has 13078 states and 16088 transitions. [2024-10-24 01:47:35,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 16088 transitions. [2024-10-24 01:47:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:47:35,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:35,970 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:47:35,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:47:35,971 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:35,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash -147183001, now seen corresponding path program 1 times [2024-10-24 01:47:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606930723] [2024-10-24 01:47:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:36,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606930723] [2024-10-24 01:47:36,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606930723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530745044] [2024-10-24 01:47:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:36,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:47:36,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 01:47:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:36,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 01:47:36,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:37,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:38,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530745044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:38,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 16] total 39 [2024-10-24 01:47:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134020877] [2024-10-24 01:47:38,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:38,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-24 01:47:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-24 01:47:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 01:47:38,823 INFO L87 Difference]: Start difference. First operand 13078 states and 16088 transitions. Second operand has 39 states, 39 states have (on average 7.846153846153846) internal successors, (306), 39 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:47:42,071 INFO L93 Difference]: Finished difference Result 21565 states and 26665 transitions. [2024-10-24 01:47:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-24 01:47:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.846153846153846) internal successors, (306), 39 states have internal predecessors, (306), 0 states have call successors, (0), 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 110 [2024-10-24 01:47:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:47:42,080 INFO L225 Difference]: With dead ends: 21565 [2024-10-24 01:47:42,080 INFO L226 Difference]: Without dead ends: 13315 [2024-10-24 01:47:42,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1809, Invalid=7503, Unknown=0, NotChecked=0, Total=9312 [2024-10-24 01:47:42,086 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1145 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:47:42,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1707 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 01:47:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13315 states. [2024-10-24 01:47:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 8872. [2024-10-24 01:47:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8872 states, 8871 states have (on average 1.2062901589448765) internal successors, (10701), 8871 states have internal predecessors, (10701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 10701 transitions. [2024-10-24 01:47:42,149 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 10701 transitions. Word has length 110 [2024-10-24 01:47:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:47:42,149 INFO L471 AbstractCegarLoop]: Abstraction has 8872 states and 10701 transitions. [2024-10-24 01:47:42,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.846153846153846) internal successors, (306), 39 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:47:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 10701 transitions. [2024-10-24 01:47:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:47:42,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:47:42,150 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-10-24 01:47:42,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 01:47:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:42,351 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:47:42,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:47:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1806192852, now seen corresponding path program 1 times [2024-10-24 01:47:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:47:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943370532] [2024-10-24 01:47:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:47:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:47:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:47:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943370532] [2024-10-24 01:47:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943370532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:47:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777631484] [2024-10-24 01:47:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:47:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:47:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:47:42,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:47:42,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 01:47:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:47:42,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 01:47:42,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:47:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:47:43,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:47:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:47:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777631484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:47:43,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:47:43,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 33 [2024-10-24 01:47:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536439354] [2024-10-24 01:47:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:47:43,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-24 01:47:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:47:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-24 01:47:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 01:47:43,771 INFO L87 Difference]: Start difference. First operand 8872 states and 10701 transitions. Second operand has 33 states, 33 states have (on average 9.121212121212121) internal successors, (301), 33 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)