./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:59:47,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:59:47,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 06:59:48,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:59:48,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:59:48,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:59:48,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:59:48,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:59:48,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:59:48,035 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:59:48,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:59:48,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:59:48,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:59:48,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:59:48,042 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:59:48,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:59:48,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:59:48,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 06:59:48,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:59:48,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:59:48,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:59:48,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:59:48,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:59:48,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:59:48,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:59:48,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:59:48,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:59:48,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:59:48,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:59:48,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:59:48,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:59:48,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:59:48,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:59:48,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 06:59:48,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 06:59:48,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:59:48,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:59:48,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:59:48,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:59:48,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a [2024-10-14 06:59:48,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:59:48,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:59:48,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:59:48,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:59:48,342 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:59:48,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-10-14 06:59:49,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:59:50,062 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:59:50,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-10-14 06:59:50,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe7c563c/690f306f0dc44a00ac8fa23d0e926e9c/FLAGec5de2a4f [2024-10-14 06:59:50,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe7c563c/690f306f0dc44a00ac8fa23d0e926e9c [2024-10-14 06:59:50,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:59:50,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:59:50,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:59:50,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:59:50,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:59:50,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50, skipping insertion in model container [2024-10-14 06:59:50,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:59:50,273 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/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-10-14 06:59:50,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:59:50,374 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:59:50,385 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/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-10-14 06:59:50,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:59:50,490 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:59:50,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50 WrapperNode [2024-10-14 06:59:50,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:59:50,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:59:50,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:59:50,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:59:50,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,656 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 651 [2024-10-14 06:59:50,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:59:50,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:59:50,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:59:50,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:59:50,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,736 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]. [2024-10-14 06:59:50,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:59:50,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:59:50,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:59:50,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:59:50,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (1/1) ... [2024-10-14 06:59:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:59:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:59:50,865 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) [2024-10-14 06:59:50,868 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 [2024-10-14 06:59:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:59:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 06:59:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:59:50,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:59:51,033 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:59:51,035 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:59:51,882 INFO L? ?]: Removed 394 outVars from TransFormulas that were not future-live. [2024-10-14 06:59:51,882 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:59:51,922 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:59:51,922 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:59:51,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:59:51 BoogieIcfgContainer [2024-10-14 06:59:51,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:59:51,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:59:51,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:59:51,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:59:51,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:59:50" (1/3) ... [2024-10-14 06:59:51,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6404aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:59:51, skipping insertion in model container [2024-10-14 06:59:51,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:59:50" (2/3) ... [2024-10-14 06:59:51,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6404aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:59:51, skipping insertion in model container [2024-10-14 06:59:51,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:59:51" (3/3) ... [2024-10-14 06:59:51,932 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2024-10-14 06:59:51,948 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:59:51,948 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:59:52,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:59:52,026 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;@51bca92c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:59:52,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:59:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 1.5026455026455026) internal successors, (284), 190 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 06:59:52,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:52,043 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] [2024-10-14 06:59:52,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:52,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1719908969, now seen corresponding path program 1 times [2024-10-14 06:59:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:52,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696612044] [2024-10-14 06:59:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696612044] [2024-10-14 06:59:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696612044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677510465] [2024-10-14 06:59:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:52,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:59:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:52,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:59:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:59:52,592 INFO L87 Difference]: Start difference. First operand has 191 states, 189 states have (on average 1.5026455026455026) internal successors, (284), 190 states have internal predecessors, (284), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:52,660 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2024-10-14 06:59:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:59:52,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-14 06:59:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:52,675 INFO L225 Difference]: With dead ends: 346 [2024-10-14 06:59:52,675 INFO L226 Difference]: Without dead ends: 192 [2024-10-14 06:59:52,679 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 [2024-10-14 06:59:52,683 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:52,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:59:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-14 06:59:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-10-14 06:59:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.486910994764398) internal successors, (284), 191 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2024-10-14 06:59:52,730 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 26 [2024-10-14 06:59:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:52,730 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2024-10-14 06:59:52,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2024-10-14 06:59:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 06:59:52,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:52,732 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] [2024-10-14 06:59:52,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 06:59:52,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:52,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1779265783, now seen corresponding path program 1 times [2024-10-14 06:59:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022976405] [2024-10-14 06:59:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:52,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022976405] [2024-10-14 06:59:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022976405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:52,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:52,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:52,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200002619] [2024-10-14 06:59:52,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:52,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:59:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:59:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:59:52,869 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:52,907 INFO L93 Difference]: Finished difference Result 349 states and 516 transitions. [2024-10-14 06:59:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:59:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-14 06:59:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:52,909 INFO L225 Difference]: With dead ends: 349 [2024-10-14 06:59:52,909 INFO L226 Difference]: Without dead ends: 194 [2024-10-14 06:59:52,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:59:52,911 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:52,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 829 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:59:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-14 06:59:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-10-14 06:59:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 193 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 286 transitions. [2024-10-14 06:59:52,926 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 286 transitions. Word has length 27 [2024-10-14 06:59:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:52,926 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 286 transitions. [2024-10-14 06:59:52,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 286 transitions. [2024-10-14 06:59:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 06:59:52,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:52,928 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] [2024-10-14 06:59:52,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 06:59:52,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:52,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1775301374, now seen corresponding path program 1 times [2024-10-14 06:59:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:52,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182865574] [2024-10-14 06:59:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:53,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:53,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182865574] [2024-10-14 06:59:53,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182865574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:53,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:53,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:53,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122221867] [2024-10-14 06:59:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:53,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:53,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:53,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:53,163 INFO L87 Difference]: Start difference. First operand 194 states and 286 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:53,255 INFO L93 Difference]: Finished difference Result 482 states and 711 transitions. [2024-10-14 06:59:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:53,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-14 06:59:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:53,260 INFO L225 Difference]: With dead ends: 482 [2024-10-14 06:59:53,260 INFO L226 Difference]: Without dead ends: 325 [2024-10-14 06:59:53,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:53,263 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 649 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:53,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 808 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-14 06:59:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 196. [2024-10-14 06:59:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.476923076923077) internal successors, (288), 195 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2024-10-14 06:59:53,282 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 28 [2024-10-14 06:59:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:53,282 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2024-10-14 06:59:53,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2024-10-14 06:59:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 06:59:53,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:53,288 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:53,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 06:59:53,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:53,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1423892387, now seen corresponding path program 1 times [2024-10-14 06:59:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139533922] [2024-10-14 06:59:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139533922] [2024-10-14 06:59:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139533922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474741519] [2024-10-14 06:59:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:54,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:54,256 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:54,372 INFO L93 Difference]: Finished difference Result 474 states and 698 transitions. [2024-10-14 06:59:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-14 06:59:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:54,374 INFO L225 Difference]: With dead ends: 474 [2024-10-14 06:59:54,374 INFO L226 Difference]: Without dead ends: 317 [2024-10-14 06:59:54,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:54,379 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 597 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:54,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 800 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-14 06:59:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 243. [2024-10-14 06:59:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4669421487603307) internal successors, (355), 242 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 355 transitions. [2024-10-14 06:59:54,397 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 355 transitions. Word has length 105 [2024-10-14 06:59:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:54,398 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 355 transitions. [2024-10-14 06:59:54,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 355 transitions. [2024-10-14 06:59:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-14 06:59:54,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:54,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:54,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 06:59:54,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:54,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1461028602, now seen corresponding path program 1 times [2024-10-14 06:59:54,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:54,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624027624] [2024-10-14 06:59:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:54,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624027624] [2024-10-14 06:59:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624027624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 06:59:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129697847] [2024-10-14 06:59:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:55,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 06:59:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 06:59:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 06:59:55,612 INFO L87 Difference]: Start difference. First operand 243 states and 355 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:55,821 INFO L93 Difference]: Finished difference Result 923 states and 1349 transitions. [2024-10-14 06:59:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 06:59:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-10-14 06:59:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:55,825 INFO L225 Difference]: With dead ends: 923 [2024-10-14 06:59:55,825 INFO L226 Difference]: Without dead ends: 743 [2024-10-14 06:59:55,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 06:59:55,827 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 1116 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:55,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 2783 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-10-14 06:59:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 275. [2024-10-14 06:59:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.4525547445255473) internal successors, (398), 274 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 398 transitions. [2024-10-14 06:59:55,845 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 398 transitions. Word has length 107 [2024-10-14 06:59:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:55,845 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 398 transitions. [2024-10-14 06:59:55,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 398 transitions. [2024-10-14 06:59:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-14 06:59:55,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:55,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:55,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 06:59:55,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:55,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 365866267, now seen corresponding path program 1 times [2024-10-14 06:59:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:55,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396993534] [2024-10-14 06:59:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:55,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396993534] [2024-10-14 06:59:56,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396993534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:56,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:56,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804270029] [2024-10-14 06:59:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:56,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:56,514 INFO L87 Difference]: Start difference. First operand 275 states and 398 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:56,587 INFO L93 Difference]: Finished difference Result 529 states and 772 transitions. [2024-10-14 06:59:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-14 06:59:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:56,589 INFO L225 Difference]: With dead ends: 529 [2024-10-14 06:59:56,590 INFO L226 Difference]: Without dead ends: 349 [2024-10-14 06:59:56,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:56,592 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 604 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:56,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 806 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:59:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-10-14 06:59:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 243. [2024-10-14 06:59:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4586776859504131) internal successors, (353), 242 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 353 transitions. [2024-10-14 06:59:56,602 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 353 transitions. Word has length 108 [2024-10-14 06:59:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 353 transitions. [2024-10-14 06:59:56,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 353 transitions. [2024-10-14 06:59:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-14 06:59:56,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:56,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:56,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 06:59:56,608 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:56,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1370964969, now seen corresponding path program 1 times [2024-10-14 06:59:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167050318] [2024-10-14 06:59:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:57,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:57,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167050318] [2024-10-14 06:59:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167050318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:57,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362803823] [2024-10-14 06:59:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:57,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:57,337 INFO L87 Difference]: Start difference. First operand 243 states and 353 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:57,434 INFO L93 Difference]: Finished difference Result 477 states and 699 transitions. [2024-10-14 06:59:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:57,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-14 06:59:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:57,438 INFO L225 Difference]: With dead ends: 477 [2024-10-14 06:59:57,439 INFO L226 Difference]: Without dead ends: 320 [2024-10-14 06:59:57,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:57,441 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 555 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:57,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 795 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-14 06:59:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2024-10-14 06:59:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.4637223974763407) internal successors, (464), 317 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 464 transitions. [2024-10-14 06:59:57,454 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 464 transitions. Word has length 109 [2024-10-14 06:59:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:57,455 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 464 transitions. [2024-10-14 06:59:57,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 464 transitions. [2024-10-14 06:59:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-14 06:59:57,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:57,457 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:57,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 06:59:57,457 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:57,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash -737854373, now seen corresponding path program 1 times [2024-10-14 06:59:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810886606] [2024-10-14 06:59:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810886606] [2024-10-14 06:59:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810886606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499221574] [2024-10-14 06:59:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:58,173 INFO L87 Difference]: Start difference. First operand 318 states and 464 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:58,270 INFO L93 Difference]: Finished difference Result 513 states and 751 transitions. [2024-10-14 06:59:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-10-14 06:59:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:58,272 INFO L225 Difference]: With dead ends: 513 [2024-10-14 06:59:58,272 INFO L226 Difference]: Without dead ends: 318 [2024-10-14 06:59:58,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:58,274 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 569 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:58,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 799 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-14 06:59:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2024-10-14 06:59:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.4605678233438486) internal successors, (463), 317 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 463 transitions. [2024-10-14 06:59:58,282 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 463 transitions. Word has length 110 [2024-10-14 06:59:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:58,283 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 463 transitions. [2024-10-14 06:59:58,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 463 transitions. [2024-10-14 06:59:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-14 06:59:58,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:58,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:58,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 06:59:58,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:58,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2099488209, now seen corresponding path program 1 times [2024-10-14 06:59:58,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:58,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518329598] [2024-10-14 06:59:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:58,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:58,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:58,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518329598] [2024-10-14 06:59:58,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518329598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:58,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:58,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 06:59:58,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603360696] [2024-10-14 06:59:58,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:58,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 06:59:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 06:59:58,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:58,983 INFO L87 Difference]: Start difference. First operand 318 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:59,100 INFO L93 Difference]: Finished difference Result 482 states and 704 transitions. [2024-10-14 06:59:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 06:59:59,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-10-14 06:59:59,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:59,104 INFO L225 Difference]: With dead ends: 482 [2024-10-14 06:59:59,105 INFO L226 Difference]: Without dead ends: 325 [2024-10-14 06:59:59,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 06:59:59,106 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 561 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:59,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1128 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-14 06:59:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2024-10-14 06:59:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.459375) internal successors, (467), 320 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 467 transitions. [2024-10-14 06:59:59,116 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 467 transitions. Word has length 111 [2024-10-14 06:59:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:59,116 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 467 transitions. [2024-10-14 06:59:59,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 467 transitions. [2024-10-14 06:59:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 06:59:59,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:59,118 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:59,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 06:59:59,118 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:59,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2081333828, now seen corresponding path program 1 times [2024-10-14 06:59:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:59,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141930652] [2024-10-14 06:59:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:59:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:59:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:59:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:59:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141930652] [2024-10-14 06:59:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141930652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:59:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:59:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:59:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768273391] [2024-10-14 06:59:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:59:59,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:59:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:59:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:59:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:59:59,783 INFO L87 Difference]: Start difference. First operand 321 states and 467 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:59:59,880 INFO L93 Difference]: Finished difference Result 499 states and 728 transitions. [2024-10-14 06:59:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:59:59,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-10-14 06:59:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:59:59,882 INFO L225 Difference]: With dead ends: 499 [2024-10-14 06:59:59,882 INFO L226 Difference]: Without dead ends: 321 [2024-10-14 06:59:59,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:59:59,884 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 556 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:59:59,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 799 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:59:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-14 06:59:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-10-14 06:59:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.45625) internal successors, (466), 320 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 466 transitions. [2024-10-14 06:59:59,892 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 466 transitions. Word has length 112 [2024-10-14 06:59:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:59:59,892 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 466 transitions. [2024-10-14 06:59:59,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:59:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 466 transitions. [2024-10-14 06:59:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-14 06:59:59,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:59:59,894 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:59:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 06:59:59,894 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:59:59,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:59:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 843855443, now seen corresponding path program 1 times [2024-10-14 06:59:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:59:59,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989410347] [2024-10-14 06:59:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:59:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:00,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989410347] [2024-10-14 07:00:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989410347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:00,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135901050] [2024-10-14 07:00:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:00,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:00,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:00,532 INFO L87 Difference]: Start difference. First operand 321 states and 466 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:00,666 INFO L93 Difference]: Finished difference Result 488 states and 711 transitions. [2024-10-14 07:00:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-14 07:00:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:00,668 INFO L225 Difference]: With dead ends: 488 [2024-10-14 07:00:00,669 INFO L226 Difference]: Without dead ends: 331 [2024-10-14 07:00:00,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:00,670 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 566 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:00,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1319 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-14 07:00:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-10-14 07:00:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4539877300613497) internal successors, (474), 326 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 474 transitions. [2024-10-14 07:00:00,679 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 474 transitions. Word has length 113 [2024-10-14 07:00:00,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:00,679 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 474 transitions. [2024-10-14 07:00:00,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 474 transitions. [2024-10-14 07:00:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-14 07:00:00,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:00,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:00,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 07:00:00,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:00,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1683445777, now seen corresponding path program 1 times [2024-10-14 07:00:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:00,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337312901] [2024-10-14 07:00:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:00,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337312901] [2024-10-14 07:00:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337312901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:01,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:01,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:01,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160171215] [2024-10-14 07:00:01,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:01,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:01,322 INFO L87 Difference]: Start difference. First operand 327 states and 474 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:01,450 INFO L93 Difference]: Finished difference Result 511 states and 743 transitions. [2024-10-14 07:00:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-14 07:00:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:01,452 INFO L225 Difference]: With dead ends: 511 [2024-10-14 07:00:01,452 INFO L226 Difference]: Without dead ends: 331 [2024-10-14 07:00:01,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:01,453 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 574 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:01,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1122 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-14 07:00:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2024-10-14 07:00:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.451219512195122) internal successors, (476), 328 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 476 transitions. [2024-10-14 07:00:01,461 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 476 transitions. Word has length 113 [2024-10-14 07:00:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:01,461 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 476 transitions. [2024-10-14 07:00:01,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 476 transitions. [2024-10-14 07:00:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-14 07:00:01,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:01,463 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:01,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 07:00:01,463 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:01,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:01,463 INFO L85 PathProgramCache]: Analyzing trace with hash 842012219, now seen corresponding path program 1 times [2024-10-14 07:00:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:01,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003842252] [2024-10-14 07:00:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:01,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003842252] [2024-10-14 07:00:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003842252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:02,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:00:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561036547] [2024-10-14 07:00:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:02,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:00:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:00:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:00:02,182 INFO L87 Difference]: Start difference. First operand 329 states and 476 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:02,287 INFO L93 Difference]: Finished difference Result 535 states and 776 transitions. [2024-10-14 07:00:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-10-14 07:00:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:02,289 INFO L225 Difference]: With dead ends: 535 [2024-10-14 07:00:02,289 INFO L226 Difference]: Without dead ends: 329 [2024-10-14 07:00:02,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:00:02,290 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 565 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:02,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1064 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-14 07:00:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-10-14 07:00:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4481707317073171) internal successors, (475), 328 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 475 transitions. [2024-10-14 07:00:02,298 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 475 transitions. Word has length 114 [2024-10-14 07:00:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:02,298 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 475 transitions. [2024-10-14 07:00:02,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 475 transitions. [2024-10-14 07:00:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-14 07:00:02,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:02,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:02,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 07:00:02,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:02,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 297693586, now seen corresponding path program 1 times [2024-10-14 07:00:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:02,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082113067] [2024-10-14 07:00:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082113067] [2024-10-14 07:00:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082113067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007978051] [2024-10-14 07:00:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:03,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:03,417 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) [2024-10-14 07:00:03,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 07:00:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:03,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-14 07:00:03,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:04,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007978051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:06,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:06,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 32 [2024-10-14 07:00:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136560639] [2024-10-14 07:00:06,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:06,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-14 07:00:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-14 07:00:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2024-10-14 07:00:06,155 INFO L87 Difference]: Start difference. First operand 329 states and 475 transitions. Second operand has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:07,468 INFO L93 Difference]: Finished difference Result 883 states and 1277 transitions. [2024-10-14 07:00:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 07:00:07,469 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-10-14 07:00:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:07,472 INFO L225 Difference]: With dead ends: 883 [2024-10-14 07:00:07,472 INFO L226 Difference]: Without dead ends: 603 [2024-10-14 07:00:07,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 07:00:07,474 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 1681 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:07,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 4053 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 07:00:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-10-14 07:00:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 474. [2024-10-14 07:00:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.4334038054968288) internal successors, (678), 473 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 678 transitions. [2024-10-14 07:00:07,485 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 678 transitions. Word has length 115 [2024-10-14 07:00:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:07,485 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 678 transitions. [2024-10-14 07:00:07,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 678 transitions. [2024-10-14 07:00:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-14 07:00:07,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:07,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:07,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 07:00:07,688 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 [2024-10-14 07:00:07,688 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:07,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -51111131, now seen corresponding path program 1 times [2024-10-14 07:00:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280987077] [2024-10-14 07:00:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:08,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:08,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280987077] [2024-10-14 07:00:08,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280987077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:08,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:08,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:00:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62297267] [2024-10-14 07:00:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:08,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:00:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:00:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:00:08,019 INFO L87 Difference]: Start difference. First operand 474 states and 678 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:08,081 INFO L93 Difference]: Finished difference Result 631 states and 909 transitions. [2024-10-14 07:00:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:08,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-10-14 07:00:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:08,083 INFO L225 Difference]: With dead ends: 631 [2024-10-14 07:00:08,083 INFO L226 Difference]: Without dead ends: 347 [2024-10-14 07:00:08,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:00:08,084 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 599 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:08,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 805 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:00:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-10-14 07:00:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2024-10-14 07:00:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4364161849710984) internal successors, (497), 346 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 497 transitions. [2024-10-14 07:00:08,093 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 497 transitions. Word has length 116 [2024-10-14 07:00:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:08,093 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 497 transitions. [2024-10-14 07:00:08,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 497 transitions. [2024-10-14 07:00:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-14 07:00:08,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:08,096 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:08,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 07:00:08,096 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:08,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash -430971629, now seen corresponding path program 1 times [2024-10-14 07:00:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108855667] [2024-10-14 07:00:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:11,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:11,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108855667] [2024-10-14 07:00:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108855667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786433263] [2024-10-14 07:00:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:11,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:11,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:11,941 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) [2024-10-14 07:00:11,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 07:00:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:12,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-10-14 07:00:12,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:13,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:14,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786433263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:14,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 35 [2024-10-14 07:00:14,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443133110] [2024-10-14 07:00:14,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:14,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 07:00:14,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 07:00:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 07:00:14,861 INFO L87 Difference]: Start difference. First operand 347 states and 497 transitions. Second operand has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:19,937 INFO L93 Difference]: Finished difference Result 2783 states and 4017 transitions. [2024-10-14 07:00:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-10-14 07:00:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 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 192 [2024-10-14 07:00:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:19,947 INFO L225 Difference]: With dead ends: 2783 [2024-10-14 07:00:19,947 INFO L226 Difference]: Without dead ends: 2626 [2024-10-14 07:00:19,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5969 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2585, Invalid=16321, Unknown=0, NotChecked=0, Total=18906 [2024-10-14 07:00:19,955 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 15122 mSDsluCounter, 8011 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15122 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:19,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15122 Valid, 8361 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-14 07:00:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2024-10-14 07:00:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1424. [2024-10-14 07:00:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 1.4244553759662684) internal successors, (2027), 1423 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2027 transitions. [2024-10-14 07:00:19,996 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2027 transitions. Word has length 192 [2024-10-14 07:00:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:19,996 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2027 transitions. [2024-10-14 07:00:19,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2027 transitions. [2024-10-14 07:00:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-14 07:00:20,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:20,001 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:20,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 07:00:20,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 07:00:20,205 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:20,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1440128939, now seen corresponding path program 1 times [2024-10-14 07:00:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824363624] [2024-10-14 07:00:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:20,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824363624] [2024-10-14 07:00:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824363624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768601964] [2024-10-14 07:00:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:23,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:23,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:23,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:23,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 07:00:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:23,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-14 07:00:23,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:24,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:25,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768601964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:25,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:25,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 25 [2024-10-14 07:00:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260839877] [2024-10-14 07:00:25,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:25,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 07:00:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 07:00:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-10-14 07:00:25,801 INFO L87 Difference]: Start difference. First operand 1424 states and 2027 transitions. Second operand has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:26,877 INFO L93 Difference]: Finished difference Result 2448 states and 3534 transitions. [2024-10-14 07:00:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-14 07:00:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 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 193 [2024-10-14 07:00:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:26,886 INFO L225 Difference]: With dead ends: 2448 [2024-10-14 07:00:26,887 INFO L226 Difference]: Without dead ends: 1952 [2024-10-14 07:00:26,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=381, Invalid=1971, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 07:00:26,890 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 3723 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3723 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:26,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3723 Valid, 4350 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 07:00:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2024-10-14 07:00:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1759. [2024-10-14 07:00:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 1.4226393629124006) internal successors, (2501), 1758 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2501 transitions. [2024-10-14 07:00:26,938 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2501 transitions. Word has length 193 [2024-10-14 07:00:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:26,939 INFO L471 AbstractCegarLoop]: Abstraction has 1759 states and 2501 transitions. [2024-10-14 07:00:26,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2501 transitions. [2024-10-14 07:00:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-14 07:00:26,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:26,945 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:26,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 07:00:27,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:27,147 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:27,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash 129198414, now seen corresponding path program 1 times [2024-10-14 07:00:27,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492866981] [2024-10-14 07:00:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 07:00:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:28,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492866981] [2024-10-14 07:00:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492866981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:28,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:28,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 07:00:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184800188] [2024-10-14 07:00:28,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:28,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:28,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:28,942 INFO L87 Difference]: Start difference. First operand 1759 states and 2501 transitions. Second operand has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:29,025 INFO L93 Difference]: Finished difference Result 2990 states and 4307 transitions. [2024-10-14 07:00:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 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 195 [2024-10-14 07:00:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:29,034 INFO L225 Difference]: With dead ends: 2990 [2024-10-14 07:00:29,034 INFO L226 Difference]: Without dead ends: 2503 [2024-10-14 07:00:29,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:00:29,036 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 134 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:29,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1361 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2024-10-14 07:00:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2409. [2024-10-14 07:00:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.433970099667774) internal successors, (3453), 2408 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3453 transitions. [2024-10-14 07:00:29,076 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3453 transitions. Word has length 195 [2024-10-14 07:00:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:29,077 INFO L471 AbstractCegarLoop]: Abstraction has 2409 states and 3453 transitions. [2024-10-14 07:00:29,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3453 transitions. [2024-10-14 07:00:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-14 07:00:29,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:29,082 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:29,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 07:00:29,082 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:29,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 961892205, now seen corresponding path program 1 times [2024-10-14 07:00:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902073912] [2024-10-14 07:00:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-14 07:00:30,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:30,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902073912] [2024-10-14 07:00:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902073912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:30,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 07:00:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127798740] [2024-10-14 07:00:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:30,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 07:00:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 07:00:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:00:30,323 INFO L87 Difference]: Start difference. First operand 2409 states and 3453 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:30,430 INFO L93 Difference]: Finished difference Result 6464 states and 9296 transitions. [2024-10-14 07:00:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:30,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 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 195 [2024-10-14 07:00:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:30,446 INFO L225 Difference]: With dead ends: 6464 [2024-10-14 07:00:30,447 INFO L226 Difference]: Without dead ends: 5208 [2024-10-14 07:00:30,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 07:00:30,450 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 667 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:30,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1816 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2024-10-14 07:00:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 2441. [2024-10-14 07:00:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2440 states have (on average 1.4295081967213115) internal successors, (3488), 2440 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 3488 transitions. [2024-10-14 07:00:30,507 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 3488 transitions. Word has length 195 [2024-10-14 07:00:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:30,507 INFO L471 AbstractCegarLoop]: Abstraction has 2441 states and 3488 transitions. [2024-10-14 07:00:30,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 3488 transitions. [2024-10-14 07:00:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-14 07:00:30,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:30,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:30,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 07:00:30,513 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:30,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -381652430, now seen corresponding path program 1 times [2024-10-14 07:00:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864327058] [2024-10-14 07:00:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 07:00:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864327058] [2024-10-14 07:00:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864327058] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634132994] [2024-10-14 07:00:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:32,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:32,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 07:00:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:32,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-14 07:00:32,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:33,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-14 07:00:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634132994] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:34,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 07:00:34,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 12] total 29 [2024-10-14 07:00:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608512059] [2024-10-14 07:00:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:34,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 07:00:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 07:00:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-10-14 07:00:34,007 INFO L87 Difference]: Start difference. First operand 2441 states and 3488 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:34,199 INFO L93 Difference]: Finished difference Result 3461 states and 4975 transitions. [2024-10-14 07:00:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 07:00:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-10-14 07:00:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:34,209 INFO L225 Difference]: With dead ends: 3461 [2024-10-14 07:00:34,209 INFO L226 Difference]: Without dead ends: 2639 [2024-10-14 07:00:34,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-10-14 07:00:34,212 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 65 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:34,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1873 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 07:00:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2024-10-14 07:00:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2511. [2024-10-14 07:00:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.4302788844621515) internal successors, (3590), 2510 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3590 transitions. [2024-10-14 07:00:34,261 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3590 transitions. Word has length 196 [2024-10-14 07:00:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:34,262 INFO L471 AbstractCegarLoop]: Abstraction has 2511 states and 3590 transitions. [2024-10-14 07:00:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3590 transitions. [2024-10-14 07:00:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-14 07:00:34,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:34,273 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:34,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 07:00:34,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:34,474 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:34,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1375999995, now seen corresponding path program 1 times [2024-10-14 07:00:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:34,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660362554] [2024-10-14 07:00:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:34,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660362554] [2024-10-14 07:00:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660362554] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891909196] [2024-10-14 07:00:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:36,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:36,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:36,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:36,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 07:00:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:36,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-14 07:00:36,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:37,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891909196] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:39,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:39,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 35 [2024-10-14 07:00:39,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127671919] [2024-10-14 07:00:39,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:39,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 07:00:39,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 07:00:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 07:00:39,175 INFO L87 Difference]: Start difference. First operand 2511 states and 3590 transitions. Second operand has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:41,264 INFO L93 Difference]: Finished difference Result 4297 states and 6209 transitions. [2024-10-14 07:00:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-14 07:00:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 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 196 [2024-10-14 07:00:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:41,273 INFO L225 Difference]: With dead ends: 4297 [2024-10-14 07:00:41,273 INFO L226 Difference]: Without dead ends: 3405 [2024-10-14 07:00:41,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=994, Invalid=4262, Unknown=0, NotChecked=0, Total=5256 [2024-10-14 07:00:41,278 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 2853 mSDsluCounter, 6951 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:41,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2853 Valid, 7450 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 07:00:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2024-10-14 07:00:41,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 2514. [2024-10-14 07:00:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2513 states have (on average 1.429367290091524) internal successors, (3592), 2513 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3592 transitions. [2024-10-14 07:00:41,327 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3592 transitions. Word has length 196 [2024-10-14 07:00:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:41,328 INFO L471 AbstractCegarLoop]: Abstraction has 2514 states and 3592 transitions. [2024-10-14 07:00:41,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3592 transitions. [2024-10-14 07:00:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-14 07:00:41,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:41,334 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:41,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 07:00:41,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:41,535 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:41,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -874468222, now seen corresponding path program 1 times [2024-10-14 07:00:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:41,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986996827] [2024-10-14 07:00:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:41,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 44 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 07:00:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986996827] [2024-10-14 07:00:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986996827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726750138] [2024-10-14 07:00:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:43,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:43,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:43,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 07:00:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:43,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-14 07:00:43,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 07:00:43,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 07:00:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726750138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 07:00:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-10-14 07:00:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898427582] [2024-10-14 07:00:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:43,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 07:00:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 07:00:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-14 07:00:43,826 INFO L87 Difference]: Start difference. First operand 2514 states and 3592 transitions. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:43,980 INFO L93 Difference]: Finished difference Result 5428 states and 7833 transitions. [2024-10-14 07:00:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 07:00:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 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 196 [2024-10-14 07:00:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:43,994 INFO L225 Difference]: With dead ends: 5428 [2024-10-14 07:00:43,994 INFO L226 Difference]: Without dead ends: 4294 [2024-10-14 07:00:43,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-10-14 07:00:43,998 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 347 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:43,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 2610 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2024-10-14 07:00:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2850. [2024-10-14 07:00:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 1.42997542997543) internal successors, (4074), 2849 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4074 transitions. [2024-10-14 07:00:44,050 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4074 transitions. Word has length 196 [2024-10-14 07:00:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:44,051 INFO L471 AbstractCegarLoop]: Abstraction has 2850 states and 4074 transitions. [2024-10-14 07:00:44,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4074 transitions. [2024-10-14 07:00:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-14 07:00:44,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:44,056 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:44,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 07:00:44,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:44,257 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:44,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1487398563, now seen corresponding path program 1 times [2024-10-14 07:00:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:44,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155713242] [2024-10-14 07:00:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155713242] [2024-10-14 07:00:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155713242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492847214] [2024-10-14 07:00:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:45,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:45,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:45,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:45,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 07:00:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:46,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-14 07:00:46,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:46,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492847214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:47,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 29 [2024-10-14 07:00:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73031830] [2024-10-14 07:00:47,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:47,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-14 07:00:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-14 07:00:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-10-14 07:00:47,804 INFO L87 Difference]: Start difference. First operand 2850 states and 4074 transitions. Second operand has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:49,000 INFO L93 Difference]: Finished difference Result 7011 states and 10117 transitions. [2024-10-14 07:00:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 07:00:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 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 196 [2024-10-14 07:00:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:49,012 INFO L225 Difference]: With dead ends: 7011 [2024-10-14 07:00:49,012 INFO L226 Difference]: Without dead ends: 5658 [2024-10-14 07:00:49,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=340, Invalid=2110, Unknown=0, NotChecked=0, Total=2450 [2024-10-14 07:00:49,017 INFO L432 NwaCegarLoop]: 822 mSDtfsCounter, 2645 mSDsluCounter, 11259 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 12081 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:49,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 12081 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 07:00:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2024-10-14 07:00:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 3607. [2024-10-14 07:00:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3606 states have (on average 1.4240155296727677) internal successors, (5135), 3606 states have internal predecessors, (5135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5135 transitions. [2024-10-14 07:00:49,095 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5135 transitions. Word has length 196 [2024-10-14 07:00:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:49,095 INFO L471 AbstractCegarLoop]: Abstraction has 3607 states and 5135 transitions. [2024-10-14 07:00:49,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5135 transitions. [2024-10-14 07:00:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-14 07:00:49,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:49,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:49,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 07:00:49,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:49,303 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:49,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -368032231, now seen corresponding path program 1 times [2024-10-14 07:00:49,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:49,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540175485] [2024-10-14 07:00:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 07:00:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540175485] [2024-10-14 07:00:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540175485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072292228] [2024-10-14 07:00:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:50,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:50,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:00:50,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 07:00:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:50,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-14 07:00:50,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:51,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:00:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:52,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072292228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:00:52,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:00:52,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 28 [2024-10-14 07:00:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002734327] [2024-10-14 07:00:52,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:00:52,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 07:00:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 07:00:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-14 07:00:52,225 INFO L87 Difference]: Start difference. First operand 3607 states and 5135 transitions. Second operand has 29 states, 29 states have (on average 17.413793103448278) internal successors, (505), 28 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:54,585 INFO L93 Difference]: Finished difference Result 13555 states and 19642 transitions. [2024-10-14 07:00:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-10-14 07:00:54,586 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 17.413793103448278) internal successors, (505), 28 states have internal predecessors, (505), 0 states have call successors, (0), 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 197 [2024-10-14 07:00:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:54,607 INFO L225 Difference]: With dead ends: 13555 [2024-10-14 07:00:54,608 INFO L226 Difference]: Without dead ends: 12471 [2024-10-14 07:00:54,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2915 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1422, Invalid=8280, Unknown=0, NotChecked=0, Total=9702 [2024-10-14 07:00:54,617 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 4460 mSDsluCounter, 12463 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 13187 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:54,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 13187 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 07:00:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2024-10-14 07:00:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 8901. [2024-10-14 07:00:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8901 states, 8900 states have (on average 1.4410112359550562) internal successors, (12825), 8900 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 12825 transitions. [2024-10-14 07:00:54,757 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 12825 transitions. Word has length 197 [2024-10-14 07:00:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:54,757 INFO L471 AbstractCegarLoop]: Abstraction has 8901 states and 12825 transitions. [2024-10-14 07:00:54,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.413793103448278) internal successors, (505), 28 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 12825 transitions. [2024-10-14 07:00:54,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-14 07:00:54,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:54,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:54,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 07:00:54,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-14 07:00:54,969 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1565365202, now seen corresponding path program 1 times [2024-10-14 07:00:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650118403] [2024-10-14 07:00:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 07:00:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650118403] [2024-10-14 07:00:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650118403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:55,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:55,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068362691] [2024-10-14 07:00:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:55,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:55,637 INFO L87 Difference]: Start difference. First operand 8901 states and 12825 transitions. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:55,776 INFO L93 Difference]: Finished difference Result 16583 states and 23962 transitions. [2024-10-14 07:00:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 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 198 [2024-10-14 07:00:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:55,791 INFO L225 Difference]: With dead ends: 16583 [2024-10-14 07:00:55,792 INFO L226 Difference]: Without dead ends: 8976 [2024-10-14 07:00:55,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:55,803 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 185 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:55,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1172 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2024-10-14 07:00:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 8976. [2024-10-14 07:00:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 8975 states have (on average 1.4389972144846797) internal successors, (12915), 8975 states have internal predecessors, (12915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12915 transitions. [2024-10-14 07:00:55,922 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12915 transitions. Word has length 198 [2024-10-14 07:00:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:55,922 INFO L471 AbstractCegarLoop]: Abstraction has 8976 states and 12915 transitions. [2024-10-14 07:00:55,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12915 transitions. [2024-10-14 07:00:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-10-14 07:00:55,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:55,932 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:55,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 07:00:55,932 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:55,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1260140114, now seen corresponding path program 1 times [2024-10-14 07:00:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:55,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248703230] [2024-10-14 07:00:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat