./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cea4cc3548129351800c62333a8b3afa818cc0cede5b8fec1c7e8b8079e480c6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:23:01,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:23:01,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:23:01,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:23:01,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:23:01,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:23:01,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:23:01,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:23:01,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:23:01,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:23:01,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:23:01,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:23:01,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:23:01,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:23:01,208 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:23:01,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:23:01,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:23:01,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:23:01,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:23:01,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:23:01,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:23:01,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:23:01,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:23:01,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:23:01,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:23:01,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:23:01,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:23:01,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:23:01,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:23:01,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:23:01,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:23:01,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:23:01,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:01,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:23:01,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:23:01,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:23:01,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:23:01,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:23:01,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:23:01,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:23:01,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:23:01,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:23:01,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cea4cc3548129351800c62333a8b3afa818cc0cede5b8fec1c7e8b8079e480c6 [2024-10-24 01:23:01,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:23:01,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:23:01,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:23:01,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:23:01,498 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:23:01,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2024-10-24 01:23:02,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:23:03,149 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:23:03,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2024-10-24 01:23:03,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d6e1af7/5a6e0517920e46d498df800093e636b7/FLAG3b9a6c9c1 [2024-10-24 01:23:03,493 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d6e1af7/5a6e0517920e46d498df800093e636b7 [2024-10-24 01:23:03,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:23:03,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:23:03,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:03,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:23:03,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:23:03,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739f7a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03, skipping insertion in model container [2024-10-24 01:23:03,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:23:03,777 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2024-10-24 01:23:03,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:03,800 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:23:03,858 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2024-10-24 01:23:03,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:03,889 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:23:03,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03 WrapperNode [2024-10-24 01:23:03,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:03,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:03,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:23:03,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:23:03,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,939 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 383 [2024-10-24 01:23:03,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:03,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:23:03,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:23:03,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:23:03,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,983 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 01:23:03,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:03,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:04,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:04,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:23:04,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:23:04,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:23:04,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:23:04,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2024-10-24 01:23:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:04,057 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 01:23:04,064 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 01:23:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:23:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:23:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:23:04,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:23:04,237 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:23:04,239 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:23:04,735 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-10-24 01:23:04,736 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:23:04,783 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:23:04,784 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:23:04,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:04 BoogieIcfgContainer [2024-10-24 01:23:04,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:23:04,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:23:04,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:23:04,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:23:04,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:03" (1/3) ... [2024-10-24 01:23:04,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15caf600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:04, skipping insertion in model container [2024-10-24 01:23:04,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (2/3) ... [2024-10-24 01:23:04,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15caf600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:04, skipping insertion in model container [2024-10-24 01:23:04,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:04" (3/3) ... [2024-10-24 01:23:04,796 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2024-10-24 01:23:04,836 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:23:04,836 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:23:04,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:23:04,905 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;@38fa5807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:23:04,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:23:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 95 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 01:23:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 01:23:04,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:04,921 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] [2024-10-24 01:23:04,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:04,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1951345530, now seen corresponding path program 1 times [2024-10-24 01:23:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:04,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596235356] [2024-10-24 01:23:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:05,184 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 01:23:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596235356] [2024-10-24 01:23:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596235356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:05,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:05,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:23:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665795781] [2024-10-24 01:23:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:05,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:23:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:23:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:23:05,222 INFO L87 Difference]: Start difference. First operand has 96 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 95 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 01:23:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:05,261 INFO L93 Difference]: Finished difference Result 157 states and 268 transitions. [2024-10-24 01:23:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:23:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-24 01:23:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:05,276 INFO L225 Difference]: With dead ends: 157 [2024-10-24 01:23:05,277 INFO L226 Difference]: Without dead ends: 94 [2024-10-24 01:23:05,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:23:05,283 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:05,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-24 01:23:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-10-24 01:23:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.7526881720430108) internal successors, (163), 93 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 01:23:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 163 transitions. [2024-10-24 01:23:05,338 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 163 transitions. Word has length 30 [2024-10-24 01:23:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:05,339 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 163 transitions. [2024-10-24 01:23:05,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 01:23:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 163 transitions. [2024-10-24 01:23:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 01:23:05,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:05,341 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] [2024-10-24 01:23:05,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:23:05,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:05,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash -28117496, now seen corresponding path program 1 times [2024-10-24 01:23:05,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:05,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734329563] [2024-10-24 01:23:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:05,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:05,618 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 01:23:05,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:05,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734329563] [2024-10-24 01:23:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734329563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:05,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:05,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523994330] [2024-10-24 01:23:05,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:05,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:05,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:05,625 INFO L87 Difference]: Start difference. First operand 94 states and 163 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 01:23:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:05,726 INFO L93 Difference]: Finished difference Result 155 states and 261 transitions. [2024-10-24 01:23:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:05,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-24 01:23:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:05,728 INFO L225 Difference]: With dead ends: 155 [2024-10-24 01:23:05,728 INFO L226 Difference]: Without dead ends: 94 [2024-10-24 01:23:05,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:05,730 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:05,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-24 01:23:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-10-24 01:23:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2024-10-24 01:23:05,746 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 30 [2024-10-24 01:23:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:05,747 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2024-10-24 01:23:05,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 01:23:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2024-10-24 01:23:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:23:05,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:05,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:05,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:23:05,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:05,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1457306719, now seen corresponding path program 1 times [2024-10-24 01:23:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:05,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202894081] [2024-10-24 01:23:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:05,921 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 01:23:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202894081] [2024-10-24 01:23:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202894081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:05,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591755365] [2024-10-24 01:23:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:05,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:05,925 INFO L87 Difference]: Start difference. First operand 94 states and 131 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 01:23:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:05,962 INFO L93 Difference]: Finished difference Result 202 states and 307 transitions. [2024-10-24 01:23:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:23:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:05,968 INFO L225 Difference]: With dead ends: 202 [2024-10-24 01:23:05,968 INFO L226 Difference]: Without dead ends: 144 [2024-10-24 01:23:05,968 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 01:23:05,969 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 67 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 245 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 01:23:05,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-24 01:23:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2024-10-24 01:23:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4893617021276595) internal successors, (210), 141 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 01:23:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 210 transitions. [2024-10-24 01:23:05,984 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 210 transitions. Word has length 61 [2024-10-24 01:23:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:05,985 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 210 transitions. [2024-10-24 01:23:05,985 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 01:23:05,986 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 210 transitions. [2024-10-24 01:23:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:23:05,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:05,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:05,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:23:05,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:05,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1844101758, now seen corresponding path program 1 times [2024-10-24 01:23:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75597732] [2024-10-24 01:23:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:06,282 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 01:23:06,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75597732] [2024-10-24 01:23:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75597732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61223665] [2024-10-24 01:23:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:06,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:06,288 INFO L87 Difference]: Start difference. First operand 142 states and 210 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 01:23:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:06,478 INFO L93 Difference]: Finished difference Result 778 states and 1254 transitions. [2024-10-24 01:23:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:06,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:23:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:06,485 INFO L225 Difference]: With dead ends: 778 [2024-10-24 01:23:06,485 INFO L226 Difference]: Without dead ends: 672 [2024-10-24 01:23:06,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:06,487 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 1100 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:06,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 833 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-10-24 01:23:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 246. [2024-10-24 01:23:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.546938775510204) internal successors, (379), 245 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 01:23:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 379 transitions. [2024-10-24 01:23:06,513 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 379 transitions. Word has length 61 [2024-10-24 01:23:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:06,514 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 379 transitions. [2024-10-24 01:23:06,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 01:23:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 379 transitions. [2024-10-24 01:23:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:23:06,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:06,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:06,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:23:06,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:06,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1319520051, now seen corresponding path program 1 times [2024-10-24 01:23:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:06,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154538912] [2024-10-24 01:23:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:06,777 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 01:23:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154538912] [2024-10-24 01:23:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154538912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267869366] [2024-10-24 01:23:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:06,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:06,782 INFO L87 Difference]: Start difference. First operand 246 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 01:23:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:06,817 INFO L93 Difference]: Finished difference Result 256 states and 392 transitions. [2024-10-24 01:23:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 01:23:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:06,819 INFO L225 Difference]: With dead ends: 256 [2024-10-24 01:23:06,821 INFO L226 Difference]: Without dead ends: 254 [2024-10-24 01:23:06,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:06,822 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:06,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 374 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-10-24 01:23:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-10-24 01:23:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5296442687747036) internal successors, (387), 253 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 01:23:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 387 transitions. [2024-10-24 01:23:06,846 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 387 transitions. Word has length 62 [2024-10-24 01:23:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:06,847 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 387 transitions. [2024-10-24 01:23:06,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 01:23:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 387 transitions. [2024-10-24 01:23:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:23:06,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:06,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:06,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:23:06,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:06,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2043549626, now seen corresponding path program 1 times [2024-10-24 01:23:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:06,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980572512] [2024-10-24 01:23:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:06,949 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 01:23:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980572512] [2024-10-24 01:23:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980572512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119741916] [2024-10-24 01:23:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:06,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:06,954 INFO L87 Difference]: Start difference. First operand 254 states and 387 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:06,979 INFO L93 Difference]: Finished difference Result 662 states and 1041 transitions. [2024-10-24 01:23:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 01:23:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:06,985 INFO L225 Difference]: With dead ends: 662 [2024-10-24 01:23:06,988 INFO L226 Difference]: Without dead ends: 444 [2024-10-24 01:23:06,989 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 01:23:06,992 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:06,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-10-24 01:23:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2024-10-24 01:23:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.5532879818594105) internal successors, (685), 441 states have internal predecessors, (685), 0 states have call successors, (0), 0 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 01:23:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 685 transitions. [2024-10-24 01:23:07,024 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 685 transitions. Word has length 63 [2024-10-24 01:23:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:07,024 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 685 transitions. [2024-10-24 01:23:07,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,025 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 685 transitions. [2024-10-24 01:23:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:23:07,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:07,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:07,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:23:07,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:07,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -591440318, now seen corresponding path program 1 times [2024-10-24 01:23:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:07,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022483838] [2024-10-24 01:23:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:07,128 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 01:23:07,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:07,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022483838] [2024-10-24 01:23:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022483838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:07,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:07,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339245352] [2024-10-24 01:23:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:07,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:07,131 INFO L87 Difference]: Start difference. First operand 442 states and 685 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:07,160 INFO L93 Difference]: Finished difference Result 852 states and 1342 transitions. [2024-10-24 01:23:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 01:23:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:07,165 INFO L225 Difference]: With dead ends: 852 [2024-10-24 01:23:07,165 INFO L226 Difference]: Without dead ends: 634 [2024-10-24 01:23:07,167 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 01:23:07,168 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 83 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 296 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 01:23:07,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 296 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-10-24 01:23:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 632. [2024-10-24 01:23:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.561014263074485) internal successors, (985), 631 states have internal predecessors, (985), 0 states have call successors, (0), 0 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 01:23:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 985 transitions. [2024-10-24 01:23:07,192 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 985 transitions. Word has length 63 [2024-10-24 01:23:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:07,194 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 985 transitions. [2024-10-24 01:23:07,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 985 transitions. [2024-10-24 01:23:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:23:07,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:07,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:07,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:23:07,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 566689562, now seen corresponding path program 1 times [2024-10-24 01:23:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142381247] [2024-10-24 01:23:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:07,283 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 01:23:07,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142381247] [2024-10-24 01:23:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142381247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362346742] [2024-10-24 01:23:07,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:07,288 INFO L87 Difference]: Start difference. First operand 632 states and 985 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:07,329 INFO L93 Difference]: Finished difference Result 1724 states and 2711 transitions. [2024-10-24 01:23:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 01:23:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:07,334 INFO L225 Difference]: With dead ends: 1724 [2024-10-24 01:23:07,334 INFO L226 Difference]: Without dead ends: 1130 [2024-10-24 01:23:07,335 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 01:23:07,336 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 71 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 268 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 01:23:07,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2024-10-24 01:23:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1128. [2024-10-24 01:23:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 1.5536823425022184) internal successors, (1751), 1127 states have internal predecessors, (1751), 0 states have call successors, (0), 0 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 01:23:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1751 transitions. [2024-10-24 01:23:07,393 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1751 transitions. Word has length 64 [2024-10-24 01:23:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:07,393 INFO L471 AbstractCegarLoop]: Abstraction has 1128 states and 1751 transitions. [2024-10-24 01:23:07,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1751 transitions. [2024-10-24 01:23:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:23:07,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:07,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:07,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:23:07,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash 384362554, now seen corresponding path program 1 times [2024-10-24 01:23:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966663027] [2024-10-24 01:23:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:07,469 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 01:23:07,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:07,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966663027] [2024-10-24 01:23:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966663027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:07,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:07,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024751175] [2024-10-24 01:23:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:07,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:07,472 INFO L87 Difference]: Start difference. First operand 1128 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:07,529 INFO L93 Difference]: Finished difference Result 3116 states and 4841 transitions. [2024-10-24 01:23:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:07,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 01:23:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:07,538 INFO L225 Difference]: With dead ends: 3116 [2024-10-24 01:23:07,538 INFO L226 Difference]: Without dead ends: 2026 [2024-10-24 01:23:07,540 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 01:23:07,543 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 75 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 281 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 01:23:07,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 281 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2024-10-24 01:23:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2024. [2024-10-24 01:23:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 1.5338606030647552) internal successors, (3103), 2023 states have internal predecessors, (3103), 0 states have call successors, (0), 0 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 01:23:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3103 transitions. [2024-10-24 01:23:07,602 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3103 transitions. Word has length 64 [2024-10-24 01:23:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:07,603 INFO L471 AbstractCegarLoop]: Abstraction has 2024 states and 3103 transitions. [2024-10-24 01:23:07,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3103 transitions. [2024-10-24 01:23:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:23:07,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:07,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:07,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:23:07,606 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:07,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1756447066, now seen corresponding path program 1 times [2024-10-24 01:23:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239029164] [2024-10-24 01:23:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:07,666 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 01:23:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239029164] [2024-10-24 01:23:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239029164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:07,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710188356] [2024-10-24 01:23:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:07,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:07,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:07,671 INFO L87 Difference]: Start difference. First operand 2024 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:07,740 INFO L93 Difference]: Finished difference Result 5612 states and 8561 transitions. [2024-10-24 01:23:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 01:23:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:07,753 INFO L225 Difference]: With dead ends: 5612 [2024-10-24 01:23:07,753 INFO L226 Difference]: Without dead ends: 3626 [2024-10-24 01:23:07,756 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 01:23:07,757 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 79 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 294 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 01:23:07,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 294 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2024-10-24 01:23:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3624. [2024-10-24 01:23:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.5034501794093293) internal successors, (5447), 3623 states have internal predecessors, (5447), 0 states have call successors, (0), 0 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 01:23:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5447 transitions. [2024-10-24 01:23:07,906 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5447 transitions. Word has length 64 [2024-10-24 01:23:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:07,906 INFO L471 AbstractCegarLoop]: Abstraction has 3624 states and 5447 transitions. [2024-10-24 01:23:07,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5447 transitions. [2024-10-24 01:23:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 01:23:07,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:07,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:07,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:23:07,911 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:07,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1501412735, now seen corresponding path program 1 times [2024-10-24 01:23:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307627080] [2024-10-24 01:23:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307627080] [2024-10-24 01:23:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307627080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854090094] [2024-10-24 01:23:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:08,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:08,057 INFO L87 Difference]: Start difference. First operand 3624 states and 5447 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:08,131 INFO L93 Difference]: Finished difference Result 7212 states and 10857 transitions. [2024-10-24 01:23:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:08,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 01:23:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:08,147 INFO L225 Difference]: With dead ends: 7212 [2024-10-24 01:23:08,147 INFO L226 Difference]: Without dead ends: 3626 [2024-10-24 01:23:08,153 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 01:23:08,154 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 65 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:08,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 284 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2024-10-24 01:23:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3624. [2024-10-24 01:23:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.4902014904775047) internal successors, (5399), 3623 states have internal predecessors, (5399), 0 states have call successors, (0), 0 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 01:23:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5399 transitions. [2024-10-24 01:23:08,297 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5399 transitions. Word has length 89 [2024-10-24 01:23:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:08,297 INFO L471 AbstractCegarLoop]: Abstraction has 3624 states and 5399 transitions. [2024-10-24 01:23:08,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5399 transitions. [2024-10-24 01:23:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 01:23:08,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:08,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:08,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:23:08,301 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:08,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -102441310, now seen corresponding path program 1 times [2024-10-24 01:23:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414876639] [2024-10-24 01:23:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414876639] [2024-10-24 01:23:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414876639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:08,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530420624] [2024-10-24 01:23:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:08,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:08,443 INFO L87 Difference]: Start difference. First operand 3624 states and 5399 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:08,495 INFO L93 Difference]: Finished difference Result 5420 states and 8081 transitions. [2024-10-24 01:23:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 01:23:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:08,502 INFO L225 Difference]: With dead ends: 5420 [2024-10-24 01:23:08,503 INFO L226 Difference]: Without dead ends: 1834 [2024-10-24 01:23:08,507 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 01:23:08,508 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:08,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 265 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-10-24 01:23:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1832. [2024-10-24 01:23:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.4718732932823593) internal successors, (2695), 1831 states have internal predecessors, (2695), 0 states have call successors, (0), 0 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 01:23:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2695 transitions. [2024-10-24 01:23:08,556 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2695 transitions. Word has length 89 [2024-10-24 01:23:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:08,557 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2695 transitions. [2024-10-24 01:23:08,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2695 transitions. [2024-10-24 01:23:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 01:23:08,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:08,558 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, 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 01:23:08,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:23:08,559 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:08,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2020913987, now seen corresponding path program 1 times [2024-10-24 01:23:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:08,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438076036] [2024-10-24 01:23:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:08,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438076036] [2024-10-24 01:23:08,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438076036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:08,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:08,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:08,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073500187] [2024-10-24 01:23:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:08,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:08,684 INFO L87 Difference]: Start difference. First operand 1832 states and 2695 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:08,717 INFO L93 Difference]: Finished difference Result 2732 states and 4025 transitions. [2024-10-24 01:23:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 01:23:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:08,721 INFO L225 Difference]: With dead ends: 2732 [2024-10-24 01:23:08,721 INFO L226 Difference]: Without dead ends: 938 [2024-10-24 01:23:08,723 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 01:23:08,723 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 53 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:08,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 246 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-10-24 01:23:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2024-10-24 01:23:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 1.4491978609625669) internal successors, (1355), 935 states have internal predecessors, (1355), 0 states have call successors, (0), 0 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 01:23:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1355 transitions. [2024-10-24 01:23:08,747 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1355 transitions. Word has length 89 [2024-10-24 01:23:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:08,747 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 1355 transitions. [2024-10-24 01:23:08,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1355 transitions. [2024-10-24 01:23:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 01:23:08,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:08,748 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:08,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:23:08,749 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:08,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1767767964, now seen corresponding path program 1 times [2024-10-24 01:23:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:08,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186812778] [2024-10-24 01:23:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:10,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186812778] [2024-10-24 01:23:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186812778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:23:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446543718] [2024-10-24 01:23:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:10,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:23:10,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:10,428 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 01:23:10,429 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 01:23:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:10,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:23:10,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:23:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:11,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:23:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:11,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446543718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:23:11,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:23:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 7] total 21 [2024-10-24 01:23:11,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067502951] [2024-10-24 01:23:11,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:23:11,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 01:23:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 01:23:11,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-10-24 01:23:11,764 INFO L87 Difference]: Start difference. First operand 936 states and 1355 transitions. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 01:23:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:27,630 INFO L93 Difference]: Finished difference Result 10882 states and 15738 transitions. [2024-10-24 01:23:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-10-24 01:23:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 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 89 [2024-10-24 01:23:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:27,662 INFO L225 Difference]: With dead ends: 10882 [2024-10-24 01:23:27,663 INFO L226 Difference]: Without dead ends: 10264 [2024-10-24 01:23:27,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13207 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=4313, Invalid=27549, Unknown=0, NotChecked=0, Total=31862 [2024-10-24 01:23:27,675 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 5337 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:27,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5337 Valid, 2193 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-24 01:23:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2024-10-24 01:23:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 6908. [2024-10-24 01:23:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6908 states, 6907 states have (on average 1.437237585058636) internal successors, (9927), 6907 states have internal predecessors, (9927), 0 states have call successors, (0), 0 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 01:23:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 9927 transitions. [2024-10-24 01:23:27,924 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 9927 transitions. Word has length 89 [2024-10-24 01:23:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:27,924 INFO L471 AbstractCegarLoop]: Abstraction has 6908 states and 9927 transitions. [2024-10-24 01:23:27,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 01:23:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 9927 transitions. [2024-10-24 01:23:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 01:23:27,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:27,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:27,945 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 01:23:28,128 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 01:23:28,128 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:28,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1158229345, now seen corresponding path program 1 times [2024-10-24 01:23:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746294851] [2024-10-24 01:23:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:23:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746294851] [2024-10-24 01:23:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746294851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643948823] [2024-10-24 01:23:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:28,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:28,347 INFO L87 Difference]: Start difference. First operand 6908 states and 9927 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 01:23:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:28,913 INFO L93 Difference]: Finished difference Result 24119 states and 34962 transitions. [2024-10-24 01:23:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2024-10-24 01:23:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:28,955 INFO L225 Difference]: With dead ends: 24119 [2024-10-24 01:23:28,955 INFO L226 Difference]: Without dead ends: 20584 [2024-10-24 01:23:28,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:28,964 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 816 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:28,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 908 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20584 states. [2024-10-24 01:23:29,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20584 to 10329. [2024-10-24 01:23:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10328 states have (on average 1.4331913245546088) internal successors, (14802), 10328 states have internal predecessors, (14802), 0 states have call successors, (0), 0 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 01:23:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 14802 transitions. [2024-10-24 01:23:29,395 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 14802 transitions. Word has length 90 [2024-10-24 01:23:29,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:29,396 INFO L471 AbstractCegarLoop]: Abstraction has 10329 states and 14802 transitions. [2024-10-24 01:23:29,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 01:23:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 14802 transitions. [2024-10-24 01:23:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 01:23:29,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:29,397 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:29,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:23:29,397 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:29,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash -827748965, now seen corresponding path program 1 times [2024-10-24 01:23:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088615705] [2024-10-24 01:23:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:23:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:29,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088615705] [2024-10-24 01:23:29,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088615705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:29,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:29,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860245356] [2024-10-24 01:23:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:29,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:29,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:29,547 INFO L87 Difference]: Start difference. First operand 10329 states and 14802 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 01:23:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:30,034 INFO L93 Difference]: Finished difference Result 27540 states and 39837 transitions. [2024-10-24 01:23:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:30,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2024-10-24 01:23:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:30,079 INFO L225 Difference]: With dead ends: 27540 [2024-10-24 01:23:30,079 INFO L226 Difference]: Without dead ends: 24005 [2024-10-24 01:23:30,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:30,089 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 911 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:30,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 871 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24005 states. [2024-10-24 01:23:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24005 to 13750. [2024-10-24 01:23:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13750 states, 13749 states have (on average 1.431158629718525) internal successors, (19677), 13749 states have internal predecessors, (19677), 0 states have call successors, (0), 0 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 01:23:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 19677 transitions. [2024-10-24 01:23:30,558 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 19677 transitions. Word has length 90 [2024-10-24 01:23:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:30,558 INFO L471 AbstractCegarLoop]: Abstraction has 13750 states and 19677 transitions. [2024-10-24 01:23:30,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 01:23:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 19677 transitions. [2024-10-24 01:23:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 01:23:30,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:30,560 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:30,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:23:30,560 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:30,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1452248679, now seen corresponding path program 1 times [2024-10-24 01:23:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909205499] [2024-10-24 01:23:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:23:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:30,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909205499] [2024-10-24 01:23:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909205499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245804732] [2024-10-24 01:23:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:30,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:30,696 INFO L87 Difference]: Start difference. First operand 13750 states and 19677 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 01:23:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:31,389 INFO L93 Difference]: Finished difference Result 30961 states and 44712 transitions. [2024-10-24 01:23:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:31,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 90 [2024-10-24 01:23:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:31,426 INFO L225 Difference]: With dead ends: 30961 [2024-10-24 01:23:31,426 INFO L226 Difference]: Without dead ends: 27426 [2024-10-24 01:23:31,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:31,441 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 823 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:31,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 911 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27426 states. [2024-10-24 01:23:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27426 to 17171. [2024-10-24 01:23:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17171 states, 17170 states have (on average 1.4299359347699476) internal successors, (24552), 17170 states have internal predecessors, (24552), 0 states have call successors, (0), 0 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 01:23:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17171 states to 17171 states and 24552 transitions. [2024-10-24 01:23:31,969 INFO L78 Accepts]: Start accepts. Automaton has 17171 states and 24552 transitions. Word has length 90 [2024-10-24 01:23:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:31,969 INFO L471 AbstractCegarLoop]: Abstraction has 17171 states and 24552 transitions. [2024-10-24 01:23:31,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 01:23:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 17171 states and 24552 transitions. [2024-10-24 01:23:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 01:23:31,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:31,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:31,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:23:31,972 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:31,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 974182557, now seen corresponding path program 1 times [2024-10-24 01:23:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836174508] [2024-10-24 01:23:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:31,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:23:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836174508] [2024-10-24 01:23:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836174508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410819744] [2024-10-24 01:23:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:32,156 INFO L87 Difference]: Start difference. First operand 17171 states and 24552 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:32,702 INFO L93 Difference]: Finished difference Result 34382 states and 49587 transitions. [2024-10-24 01:23:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-24 01:23:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:32,738 INFO L225 Difference]: With dead ends: 34382 [2024-10-24 01:23:32,738 INFO L226 Difference]: Without dead ends: 30847 [2024-10-24 01:23:32,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:32,755 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 745 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:32,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1086 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30847 states. [2024-10-24 01:23:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30847 to 20592. [2024-10-24 01:23:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20592 states, 20591 states have (on average 1.4291195182361225) internal successors, (29427), 20591 states have internal predecessors, (29427), 0 states have call successors, (0), 0 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 01:23:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20592 states to 20592 states and 29427 transitions. [2024-10-24 01:23:33,358 INFO L78 Accepts]: Start accepts. Automaton has 20592 states and 29427 transitions. Word has length 90 [2024-10-24 01:23:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:33,361 INFO L471 AbstractCegarLoop]: Abstraction has 20592 states and 29427 transitions. [2024-10-24 01:23:33,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 20592 states and 29427 transitions. [2024-10-24 01:23:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 01:23:33,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:33,365 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, 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 01:23:33,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:23:33,365 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:33,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2133375712, now seen corresponding path program 1 times [2024-10-24 01:23:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:33,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953398258] [2024-10-24 01:23:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:23:33,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:33,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953398258] [2024-10-24 01:23:33,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953398258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:33,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:23:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670376635] [2024-10-24 01:23:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:33,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:23:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:23:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:23:33,703 INFO L87 Difference]: Start difference. First operand 20592 states and 29427 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:34,870 INFO L93 Difference]: Finished difference Result 36993 states and 53289 transitions. [2024-10-24 01:23:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:23:34,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 90 [2024-10-24 01:23:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:34,914 INFO L225 Difference]: With dead ends: 36993 [2024-10-24 01:23:34,914 INFO L226 Difference]: Without dead ends: 33932 [2024-10-24 01:23:34,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:23:34,922 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 818 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:34,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33932 states. [2024-10-24 01:23:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33932 to 23677. [2024-10-24 01:23:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23677 states, 23676 states have (on average 1.4286619361378612) internal successors, (33825), 23676 states have internal predecessors, (33825), 0 states have call successors, (0), 0 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 01:23:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23677 states to 23677 states and 33825 transitions. [2024-10-24 01:23:35,696 INFO L78 Accepts]: Start accepts. Automaton has 23677 states and 33825 transitions. Word has length 90 [2024-10-24 01:23:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:35,697 INFO L471 AbstractCegarLoop]: Abstraction has 23677 states and 33825 transitions. [2024-10-24 01:23:35,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 01:23:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 23677 states and 33825 transitions. [2024-10-24 01:23:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:23:35,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:35,700 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:35,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:23:35,700 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:35,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1526719420, now seen corresponding path program 1 times [2024-10-24 01:23:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5238946] [2024-10-24 01:23:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5238946] [2024-10-24 01:23:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5238946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:35,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499113112] [2024-10-24 01:23:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:35,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:35,804 INFO L87 Difference]: Start difference. First operand 23677 states and 33825 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 01:23:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:36,058 INFO L93 Difference]: Finished difference Result 34819 states and 49501 transitions. [2024-10-24 01:23:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-24 01:23:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:36,072 INFO L225 Difference]: With dead ends: 34819 [2024-10-24 01:23:36,072 INFO L226 Difference]: Without dead ends: 11180 [2024-10-24 01:23:36,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:36,091 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 37 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:36,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11180 states. [2024-10-24 01:23:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11180 to 9225. [2024-10-24 01:23:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9225 states, 9224 states have (on average 1.4112098872506504) internal successors, (13017), 9224 states have internal predecessors, (13017), 0 states have call successors, (0), 0 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 01:23:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9225 states to 9225 states and 13017 transitions. [2024-10-24 01:23:36,408 INFO L78 Accepts]: Start accepts. Automaton has 9225 states and 13017 transitions. Word has length 93 [2024-10-24 01:23:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:36,409 INFO L471 AbstractCegarLoop]: Abstraction has 9225 states and 13017 transitions. [2024-10-24 01:23:36,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 01:23:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9225 states and 13017 transitions. [2024-10-24 01:23:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:23:36,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:36,411 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, 1, 1, 1, 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 01:23:36,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:23:36,412 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:36,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1290810145, now seen corresponding path program 1 times [2024-10-24 01:23:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012525781] [2024-10-24 01:23:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012525781] [2024-10-24 01:23:36,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012525781] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:23:36,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599505430] [2024-10-24 01:23:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:36,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:23:36,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:36,787 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 01:23:36,788 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 01:23:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:36,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-24 01:23:36,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:23:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:38,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:23:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599505430] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:23:43,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:23:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 17] total 38 [2024-10-24 01:23:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653923538] [2024-10-24 01:23:43,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:23:43,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-24 01:23:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-24 01:23:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 01:23:43,049 INFO L87 Difference]: Start difference. First operand 9225 states and 13017 transitions. Second operand has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 38 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)