./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:21:01,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:21:02,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:21:02,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:21:02,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:21:02,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:21:02,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:21:02,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:21:02,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:21:02,071 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:21:02,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:21:02,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:21:02,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:21:02,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:21:02,074 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:21:02,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:21:02,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:21:02,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:21:02,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:21:02,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:21:02,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:21:02,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:21:02,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:21:02,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:21:02,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:21:02,079 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:21:02,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:21:02,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:21:02,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:21:02,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:21:02,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:21:02,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:21:02,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:21:02,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:21:02,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:21:02,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:21:02,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:21:02,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:21:02,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:21:02,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:21:02,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:21:02,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:21:02,085 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 [2024-10-12 21:21:02,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:21:02,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:21:02,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:21:02,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:21:02,361 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:21:02,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-12 21:21:03,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:21:04,235 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:21:04,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-12 21:21:04,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e7e0844/4e21fdf47e4b48ba8ec9deee53b792b4/FLAG011a7ace5 [2024-10-12 21:21:04,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e7e0844/4e21fdf47e4b48ba8ec9deee53b792b4 [2024-10-12 21:21:04,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:21:04,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:21:04,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:21:04,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:21:04,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:21:04,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:21:04" (1/1) ... [2024-10-12 21:21:04,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521d55e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:04, skipping insertion in model container [2024-10-12 21:21:04,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:21:04" (1/1) ... [2024-10-12 21:21:04,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:21:04,817 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-10-12 21:21:04,906 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-10-12 21:21:05,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:21:05,586 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:21:05,616 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-10-12 21:21:05,630 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-10-12 21:21:06,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:21:06,063 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:21:06,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06 WrapperNode [2024-10-12 21:21:06,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:21:06,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:21:06,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:21:06,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:21:06,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,497 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4984 [2024-10-12 21:21:06,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:21:06,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:21:06,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:21:06,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:21:06,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,751 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]. [2024-10-12 21:21:06,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:06,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:07,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:21:07,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:21:07,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:21:07,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:21:07,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (1/1) ... [2024-10-12 21:21:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:21:07,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:07,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:21:07,070 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 [2024-10-12 21:21:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:21:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:21:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:21:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:21:07,210 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:21:07,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:21:11,379 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-10-12 21:21:11,379 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:21:11,461 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:21:11,462 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:21:11,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:21:11 BoogieIcfgContainer [2024-10-12 21:21:11,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:21:11,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:21:11,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:21:11,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:21:11,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:21:04" (1/3) ... [2024-10-12 21:21:11,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:21:11, skipping insertion in model container [2024-10-12 21:21:11,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:06" (2/3) ... [2024-10-12 21:21:11,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:21:11, skipping insertion in model container [2024-10-12 21:21:11,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:21:11" (3/3) ... [2024-10-12 21:21:11,473 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-12 21:21:11,490 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:21:11,491 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:21:11,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:21:11,632 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;@18c62669, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:21:11,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:21:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:21:11,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:11,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:11,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:11,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1258292883, now seen corresponding path program 1 times [2024-10-12 21:21:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835459329] [2024-10-12 21:21:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:11,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:11,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835459329] [2024-10-12 21:21:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835459329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:11,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:21:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711489457] [2024-10-12 21:21:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:11,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:21:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:21:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:21:11,944 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:12,059 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2024-10-12 21:21:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:21:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:21:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:12,088 INFO L225 Difference]: With dead ends: 1597 [2024-10-12 21:21:12,088 INFO L226 Difference]: Without dead ends: 805 [2024-10-12 21:21:12,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:21:12,103 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:12,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-10-12 21:21:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2024-10-12 21:21:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2024-10-12 21:21:12,203 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2024-10-12 21:21:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:12,204 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2024-10-12 21:21:12,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2024-10-12 21:21:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:21:12,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:12,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:12,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:21:12,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:12,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1845098897, now seen corresponding path program 1 times [2024-10-12 21:21:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702803996] [2024-10-12 21:21:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:12,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702803996] [2024-10-12 21:21:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702803996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:21:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659455054] [2024-10-12 21:21:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:12,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:12,412 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:12,530 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2024-10-12 21:21:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:21:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:12,535 INFO L225 Difference]: With dead ends: 839 [2024-10-12 21:21:12,536 INFO L226 Difference]: Without dead ends: 805 [2024-10-12 21:21:12,536 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 [2024-10-12 21:21:12,538 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:12,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-10-12 21:21:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2024-10-12 21:21:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2024-10-12 21:21:12,561 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2024-10-12 21:21:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:12,562 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2024-10-12 21:21:12,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2024-10-12 21:21:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 21:21:12,563 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:12,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:12,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:21:12,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:12,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 249094943, now seen corresponding path program 1 times [2024-10-12 21:21:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:12,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868378006] [2024-10-12 21:21:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868378006] [2024-10-12 21:21:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868378006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265313018] [2024-10-12 21:21:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:12,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:12,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:12,707 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:12,859 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2024-10-12 21:21:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:21:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2024-10-12 21:21:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:12,864 INFO L225 Difference]: With dead ends: 991 [2024-10-12 21:21:12,865 INFO L226 Difference]: Without dead ends: 960 [2024-10-12 21:21:12,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:21:12,866 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:12,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-10-12 21:21:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2024-10-12 21:21:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2024-10-12 21:21:12,889 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2024-10-12 21:21:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:12,889 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2024-10-12 21:21:12,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2024-10-12 21:21:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:21:12,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:12,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:12,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:21:12,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:12,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1262463601, now seen corresponding path program 1 times [2024-10-12 21:21:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316291558] [2024-10-12 21:21:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316291558] [2024-10-12 21:21:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316291558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:13,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936048926] [2024-10-12 21:21:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,016 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:13,065 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2024-10-12 21:21:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:13,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:21:13,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:13,070 INFO L225 Difference]: With dead ends: 943 [2024-10-12 21:21:13,070 INFO L226 Difference]: Without dead ends: 883 [2024-10-12 21:21:13,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,072 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:13,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-10-12 21:21:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2024-10-12 21:21:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2024-10-12 21:21:13,096 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2024-10-12 21:21:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:13,097 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2024-10-12 21:21:13,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2024-10-12 21:21:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:21:13,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:13,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:13,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:21:13,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1260318649, now seen corresponding path program 1 times [2024-10-12 21:21:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610618756] [2024-10-12 21:21:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610618756] [2024-10-12 21:21:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610618756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:13,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:13,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820023397] [2024-10-12 21:21:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:13,325 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:13,423 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2024-10-12 21:21:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:21:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:13,427 INFO L225 Difference]: With dead ends: 986 [2024-10-12 21:21:13,428 INFO L226 Difference]: Without dead ends: 881 [2024-10-12 21:21:13,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:21:13,429 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 4420 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:13,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 1588 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-10-12 21:21:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-10-12 21:21:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-10-12 21:21:13,451 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2024-10-12 21:21:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:13,451 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-10-12 21:21:13,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-10-12 21:21:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 21:21:13,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:13,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:13,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:21:13,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:13,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash -543584939, now seen corresponding path program 1 times [2024-10-12 21:21:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220622072] [2024-10-12 21:21:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:13,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220622072] [2024-10-12 21:21:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220622072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:21:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309495701] [2024-10-12 21:21:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:13,597 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:13,646 INFO L93 Difference]: Finished difference Result 885 states and 1627 transitions. [2024-10-12 21:21:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-10-12 21:21:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:13,654 INFO L225 Difference]: With dead ends: 885 [2024-10-12 21:21:13,655 INFO L226 Difference]: Without dead ends: 883 [2024-10-12 21:21:13,655 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 [2024-10-12 21:21:13,658 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 0 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:13,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-10-12 21:21:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2024-10-12 21:21:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2024-10-12 21:21:13,683 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2024-10-12 21:21:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:13,684 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2024-10-12 21:21:13,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2024-10-12 21:21:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:21:13,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:13,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:13,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:21:13,686 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:13,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -709644761, now seen corresponding path program 1 times [2024-10-12 21:21:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:13,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575905339] [2024-10-12 21:21:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:13,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575905339] [2024-10-12 21:21:13,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575905339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:13,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:13,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:13,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65101314] [2024-10-12 21:21:13,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,736 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:13,771 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2024-10-12 21:21:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:13,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:21:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:13,776 INFO L225 Difference]: With dead ends: 1085 [2024-10-12 21:21:13,776 INFO L226 Difference]: Without dead ends: 976 [2024-10-12 21:21:13,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,778 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:13,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-12 21:21:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2024-10-12 21:21:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2024-10-12 21:21:13,798 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2024-10-12 21:21:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:13,799 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2024-10-12 21:21:13,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2024-10-12 21:21:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:21:13,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:13,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:13,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:21:13,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:13,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1598378201, now seen corresponding path program 1 times [2024-10-12 21:21:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072071730] [2024-10-12 21:21:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072071730] [2024-10-12 21:21:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072071730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:13,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:13,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754503721] [2024-10-12 21:21:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,842 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:13,925 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2024-10-12 21:21:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:21:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:13,931 INFO L225 Difference]: With dead ends: 1342 [2024-10-12 21:21:13,931 INFO L226 Difference]: Without dead ends: 1142 [2024-10-12 21:21:13,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:13,933 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:13,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-10-12 21:21:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2024-10-12 21:21:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2024-10-12 21:21:13,956 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2024-10-12 21:21:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:13,957 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2024-10-12 21:21:13,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2024-10-12 21:21:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 21:21:13,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:13,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:13,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:21:13,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:13,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash -566209588, now seen corresponding path program 1 times [2024-10-12 21:21:13,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:13,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361666810] [2024-10-12 21:21:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:13,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:14,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361666810] [2024-10-12 21:21:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361666810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:14,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34317648] [2024-10-12 21:21:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:14,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:14,009 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:14,049 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2024-10-12 21:21:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-12 21:21:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:14,055 INFO L225 Difference]: With dead ends: 1531 [2024-10-12 21:21:14,055 INFO L226 Difference]: Without dead ends: 1312 [2024-10-12 21:21:14,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:14,057 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:14,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-10-12 21:21:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2024-10-12 21:21:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2024-10-12 21:21:14,090 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2024-10-12 21:21:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:14,090 INFO L471 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2024-10-12 21:21:14,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2024-10-12 21:21:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-12 21:21:14,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:14,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:14,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:21:14,092 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1873515207, now seen corresponding path program 1 times [2024-10-12 21:21:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832830301] [2024-10-12 21:21:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832830301] [2024-10-12 21:21:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832830301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:14,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:14,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:14,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145706799] [2024-10-12 21:21:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:14,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:14,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:14,225 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:19,911 INFO L93 Difference]: Finished difference Result 3565 states and 6531 transitions. [2024-10-12 21:21:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-10-12 21:21:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:19,922 INFO L225 Difference]: With dead ends: 3565 [2024-10-12 21:21:19,922 INFO L226 Difference]: Without dead ends: 2812 [2024-10-12 21:21:19,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:19,924 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 2356 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:19,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 759 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-12 21:21:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2024-10-12 21:21:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2812. [2024-10-12 21:21:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2810 states have (on average 1.5430604982206406) internal successors, (4336), 2811 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4336 transitions. [2024-10-12 21:21:20,015 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4336 transitions. Word has length 47 [2024-10-12 21:21:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:20,015 INFO L471 AbstractCegarLoop]: Abstraction has 2812 states and 4336 transitions. [2024-10-12 21:21:20,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4336 transitions. [2024-10-12 21:21:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:21:20,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:20,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:20,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:21:20,018 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:20,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1445833490, now seen corresponding path program 1 times [2024-10-12 21:21:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547510742] [2024-10-12 21:21:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 21:21:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547510742] [2024-10-12 21:21:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547510742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:20,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578533918] [2024-10-12 21:21:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:20,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:20,157 INFO L87 Difference]: Start difference. First operand 2812 states and 4336 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:20,270 INFO L93 Difference]: Finished difference Result 4536 states and 6784 transitions. [2024-10-12 21:21:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2024-10-12 21:21:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:20,285 INFO L225 Difference]: With dead ends: 4536 [2024-10-12 21:21:20,286 INFO L226 Difference]: Without dead ends: 4002 [2024-10-12 21:21:20,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:20,289 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 3055 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:20,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2024-10-12 21:21:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3344. [2024-10-12 21:21:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3342 states have (on average 1.521244763614602) internal successors, (5084), 3343 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5084 transitions. [2024-10-12 21:21:20,373 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5084 transitions. Word has length 50 [2024-10-12 21:21:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:20,374 INFO L471 AbstractCegarLoop]: Abstraction has 3344 states and 5084 transitions. [2024-10-12 21:21:20,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5084 transitions. [2024-10-12 21:21:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:21:20,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:20,375 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:20,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:21:20,376 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:20,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1960400366, now seen corresponding path program 1 times [2024-10-12 21:21:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:20,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856058651] [2024-10-12 21:21:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:20,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:21:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856058651] [2024-10-12 21:21:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856058651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554632628] [2024-10-12 21:21:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:20,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:20,487 INFO L87 Difference]: Start difference. First operand 3344 states and 5084 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:20,630 INFO L93 Difference]: Finished difference Result 5068 states and 7532 transitions. [2024-10-12 21:21:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:20,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2024-10-12 21:21:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:20,648 INFO L225 Difference]: With dead ends: 5068 [2024-10-12 21:21:20,649 INFO L226 Difference]: Without dead ends: 4534 [2024-10-12 21:21:20,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:20,652 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:20,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2024-10-12 21:21:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 4144. [2024-10-12 21:21:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4142 states have (on average 1.4958957025591502) internal successors, (6196), 4143 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 6196 transitions. [2024-10-12 21:21:20,752 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 6196 transitions. Word has length 50 [2024-10-12 21:21:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:20,752 INFO L471 AbstractCegarLoop]: Abstraction has 4144 states and 6196 transitions. [2024-10-12 21:21:20,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 6196 transitions. [2024-10-12 21:21:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 21:21:20,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:20,754 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:20,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:21:20,754 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:20,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2001029718, now seen corresponding path program 1 times [2024-10-12 21:21:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:20,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26961030] [2024-10-12 21:21:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26961030] [2024-10-12 21:21:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26961030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676973295] [2024-10-12 21:21:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:20,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:20,877 INFO L87 Difference]: Start difference. First operand 4144 states and 6196 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:20,933 INFO L93 Difference]: Finished difference Result 5507 states and 8146 transitions. [2024-10-12 21:21:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:20,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-12 21:21:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:20,952 INFO L225 Difference]: With dead ends: 5507 [2024-10-12 21:21:20,952 INFO L226 Difference]: Without dead ends: 3641 [2024-10-12 21:21:20,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:20,956 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:20,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2024-10-12 21:21:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2024-10-12 21:21:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3637 states have (on average 1.5108605993951059) internal successors, (5495), 3638 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5495 transitions. [2024-10-12 21:21:21,042 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5495 transitions. Word has length 52 [2024-10-12 21:21:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:21,042 INFO L471 AbstractCegarLoop]: Abstraction has 3639 states and 5495 transitions. [2024-10-12 21:21:21,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5495 transitions. [2024-10-12 21:21:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 21:21:21,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:21,043 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:21,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:21:21,043 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:21,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash 626025683, now seen corresponding path program 1 times [2024-10-12 21:21:21,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:21,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114454902] [2024-10-12 21:21:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:21,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:21,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114454902] [2024-10-12 21:21:21,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114454902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:21,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:21,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623974345] [2024-10-12 21:21:21,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:21,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:21,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:21,123 INFO L87 Difference]: Start difference. First operand 3639 states and 5495 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:21,232 INFO L93 Difference]: Finished difference Result 4799 states and 7155 transitions. [2024-10-12 21:21:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 21:21:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:21,242 INFO L225 Difference]: With dead ends: 4799 [2024-10-12 21:21:21,242 INFO L226 Difference]: Without dead ends: 4413 [2024-10-12 21:21:21,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:21,245 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:21,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2024-10-12 21:21:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4023. [2024-10-12 21:21:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 4021 states have (on average 1.501865207659786) internal successors, (6039), 4022 states have internal predecessors, (6039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 6039 transitions. [2024-10-12 21:21:21,329 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 6039 transitions. Word has length 52 [2024-10-12 21:21:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:21,329 INFO L471 AbstractCegarLoop]: Abstraction has 4023 states and 6039 transitions. [2024-10-12 21:21:21,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 6039 transitions. [2024-10-12 21:21:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:21:21,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:21,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:21,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:21:21,331 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:21,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1629170632, now seen corresponding path program 1 times [2024-10-12 21:21:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923460148] [2024-10-12 21:21:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923460148] [2024-10-12 21:21:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923460148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106668684] [2024-10-12 21:21:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:21,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:21,400 INFO L87 Difference]: Start difference. First operand 4023 states and 6039 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:21,445 INFO L93 Difference]: Finished difference Result 4891 states and 7265 transitions. [2024-10-12 21:21:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:21,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 21:21:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:21,452 INFO L225 Difference]: With dead ends: 4891 [2024-10-12 21:21:21,452 INFO L226 Difference]: Without dead ends: 3161 [2024-10-12 21:21:21,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:21,455 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:21,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2024-10-12 21:21:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3159. [2024-10-12 21:21:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3157 states have (on average 1.5194805194805194) internal successors, (4797), 3158 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4797 transitions. [2024-10-12 21:21:21,515 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4797 transitions. Word has length 53 [2024-10-12 21:21:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:21,516 INFO L471 AbstractCegarLoop]: Abstraction has 3159 states and 4797 transitions. [2024-10-12 21:21:21,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4797 transitions. [2024-10-12 21:21:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:21:21,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:21,517 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:21,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:21:21,517 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:21,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1014743962, now seen corresponding path program 1 times [2024-10-12 21:21:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:21,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328922405] [2024-10-12 21:21:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:21,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:21,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:21,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328922405] [2024-10-12 21:21:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328922405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:21,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:21,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038485015] [2024-10-12 21:21:21,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:21,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:21,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:21,585 INFO L87 Difference]: Start difference. First operand 3159 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:21,622 INFO L93 Difference]: Finished difference Result 3595 states and 5402 transitions. [2024-10-12 21:21:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-12 21:21:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:21,627 INFO L225 Difference]: With dead ends: 3595 [2024-10-12 21:21:21,628 INFO L226 Difference]: Without dead ends: 2729 [2024-10-12 21:21:21,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:21,630 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:21,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2024-10-12 21:21:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2727. [2024-10-12 21:21:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2725 states have (on average 1.5357798165137615) internal successors, (4185), 2726 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4185 transitions. [2024-10-12 21:21:21,675 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4185 transitions. Word has length 55 [2024-10-12 21:21:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:21,676 INFO L471 AbstractCegarLoop]: Abstraction has 2727 states and 4185 transitions. [2024-10-12 21:21:21,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4185 transitions. [2024-10-12 21:21:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:21:21,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:21,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:21,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:21:21,677 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:21,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1240304108, now seen corresponding path program 1 times [2024-10-12 21:21:21,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:21,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644591213] [2024-10-12 21:21:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:23,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644591213] [2024-10-12 21:21:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644591213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538056502] [2024-10-12 21:21:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:23,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:23,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:23,333 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) [2024-10-12 21:21:23,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:21:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:23,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:21:23,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:23,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538056502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:23,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-12 21:21:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230062861] [2024-10-12 21:21:23,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:23,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 21:21:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 21:21:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:21:23,780 INFO L87 Difference]: Start difference. First operand 2727 states and 4185 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:26,382 INFO L93 Difference]: Finished difference Result 5036 states and 7267 transitions. [2024-10-12 21:21:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-12 21:21:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 57 [2024-10-12 21:21:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:26,391 INFO L225 Difference]: With dead ends: 5036 [2024-10-12 21:21:26,391 INFO L226 Difference]: Without dead ends: 4602 [2024-10-12 21:21:26,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-10-12 21:21:26,395 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 15909 mSDsluCounter, 6187 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15909 SdHoareTripleChecker+Valid, 7679 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:26,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15909 Valid, 7679 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:21:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2024-10-12 21:21:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4524. [2024-10-12 21:21:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4522 states have (on average 1.4219371959310039) internal successors, (6430), 4523 states have internal predecessors, (6430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 6430 transitions. [2024-10-12 21:21:26,504 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 6430 transitions. Word has length 57 [2024-10-12 21:21:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:26,504 INFO L471 AbstractCegarLoop]: Abstraction has 4524 states and 6430 transitions. [2024-10-12 21:21:26,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 6430 transitions. [2024-10-12 21:21:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:21:26,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:26,508 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:26,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 21:21:26,709 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,SelfDestructingSolverStorable16 [2024-10-12 21:21:26,710 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:26,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1654003359, now seen corresponding path program 1 times [2024-10-12 21:21:26,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476758672] [2024-10-12 21:21:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:26,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:28,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:28,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476758672] [2024-10-12 21:21:28,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476758672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:28,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482267619] [2024-10-12 21:21:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:28,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:28,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:28,303 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) [2024-10-12 21:21:28,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:21:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:28,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:21:28,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:28,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482267619] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:29,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-12 21:21:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134122767] [2024-10-12 21:21:29,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:29,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 21:21:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 21:21:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-10-12 21:21:29,458 INFO L87 Difference]: Start difference. First operand 4524 states and 6430 transitions. Second operand has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:30,045 INFO L93 Difference]: Finished difference Result 8389 states and 11378 transitions. [2024-10-12 21:21:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:21:30,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 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 58 [2024-10-12 21:21:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:30,058 INFO L225 Difference]: With dead ends: 8389 [2024-10-12 21:21:30,058 INFO L226 Difference]: Without dead ends: 6548 [2024-10-12 21:21:30,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 21:21:30,064 INFO L432 NwaCegarLoop]: 1489 mSDtfsCounter, 15116 mSDsluCounter, 4688 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15116 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:30,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15116 Valid, 6177 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:21:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2024-10-12 21:21:30,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6482. [2024-10-12 21:21:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6482 states, 6480 states have (on average 1.3634259259259258) internal successors, (8835), 6481 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 8835 transitions. [2024-10-12 21:21:30,245 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 8835 transitions. Word has length 58 [2024-10-12 21:21:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:30,245 INFO L471 AbstractCegarLoop]: Abstraction has 6482 states and 8835 transitions. [2024-10-12 21:21:30,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:30,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 8835 transitions. [2024-10-12 21:21:30,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:21:30,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:30,247 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:30,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 21:21:30,447 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,SelfDestructingSolverStorable17 [2024-10-12 21:21:30,448 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:30,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 983464685, now seen corresponding path program 1 times [2024-10-12 21:21:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295529166] [2024-10-12 21:21:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295529166] [2024-10-12 21:21:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295529166] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839110431] [2024-10-12 21:21:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:30,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:30,779 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) [2024-10-12 21:21:30,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:21:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:30,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 21:21:30,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:31,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839110431] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:32,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:32,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-12 21:21:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564737215] [2024-10-12 21:21:32,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:32,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 21:21:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 21:21:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-10-12 21:21:32,248 INFO L87 Difference]: Start difference. First operand 6482 states and 8835 transitions. Second operand has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:34,945 INFO L93 Difference]: Finished difference Result 13935 states and 18327 transitions. [2024-10-12 21:21:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-12 21:21:34,945 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 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 58 [2024-10-12 21:21:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:34,965 INFO L225 Difference]: With dead ends: 13935 [2024-10-12 21:21:34,966 INFO L226 Difference]: Without dead ends: 10211 [2024-10-12 21:21:34,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-10-12 21:21:34,973 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 14362 mSDsluCounter, 12336 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14362 SdHoareTripleChecker+Valid, 13838 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:34,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14362 Valid, 13838 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:21:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2024-10-12 21:21:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 7065. [2024-10-12 21:21:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7065 states, 7063 states have (on average 1.3556562367266034) internal successors, (9575), 7064 states have internal predecessors, (9575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 9575 transitions. [2024-10-12 21:21:35,197 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 9575 transitions. Word has length 58 [2024-10-12 21:21:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:35,197 INFO L471 AbstractCegarLoop]: Abstraction has 7065 states and 9575 transitions. [2024-10-12 21:21:35,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 9575 transitions. [2024-10-12 21:21:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:21:35,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:35,198 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:35,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 21:21:35,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:35,403 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:35,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -121514552, now seen corresponding path program 1 times [2024-10-12 21:21:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474024273] [2024-10-12 21:21:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474024273] [2024-10-12 21:21:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474024273] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:35,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868169141] [2024-10-12 21:21:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:35,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:35,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:35,706 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) [2024-10-12 21:21:35,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:21:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:35,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 21:21:35,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:36,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868169141] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:36,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-12 21:21:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896791252] [2024-10-12 21:21:36,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:36,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 21:21:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 21:21:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-10-12 21:21:36,599 INFO L87 Difference]: Start difference. First operand 7065 states and 9575 transitions. Second operand has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:37,058 INFO L93 Difference]: Finished difference Result 11287 states and 14926 transitions. [2024-10-12 21:21:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:21:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 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 59 [2024-10-12 21:21:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:37,072 INFO L225 Difference]: With dead ends: 11287 [2024-10-12 21:21:37,072 INFO L226 Difference]: Without dead ends: 7285 [2024-10-12 21:21:37,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-10-12 21:21:37,080 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 12005 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12005 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:37,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12005 Valid, 6164 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:21:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2024-10-12 21:21:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 7019. [2024-10-12 21:21:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7017 states have (on average 1.3472994157047171) internal successors, (9454), 7018 states have internal predecessors, (9454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 9454 transitions. [2024-10-12 21:21:37,392 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 9454 transitions. Word has length 59 [2024-10-12 21:21:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:37,393 INFO L471 AbstractCegarLoop]: Abstraction has 7019 states and 9454 transitions. [2024-10-12 21:21:37,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 9454 transitions. [2024-10-12 21:21:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:21:37,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:37,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:37,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:21:37,594 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 [2024-10-12 21:21:37,595 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:37,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash -644118762, now seen corresponding path program 1 times [2024-10-12 21:21:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998126027] [2024-10-12 21:21:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998126027] [2024-10-12 21:21:38,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998126027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822061539] [2024-10-12 21:21:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:38,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:38,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:38,318 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) [2024-10-12 21:21:38,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:21:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:38,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-12 21:21:38,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:39,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822061539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:42,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:42,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 17] total 43 [2024-10-12 21:21:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641940276] [2024-10-12 21:21:42,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:42,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 21:21:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 21:21:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1585, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 21:21:42,145 INFO L87 Difference]: Start difference. First operand 7019 states and 9454 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:45,006 INFO L93 Difference]: Finished difference Result 8277 states and 11050 transitions. [2024-10-12 21:21:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-12 21:21:45,007 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 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 59 [2024-10-12 21:21:45,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:45,014 INFO L225 Difference]: With dead ends: 8277 [2024-10-12 21:21:45,014 INFO L226 Difference]: Without dead ends: 5030 [2024-10-12 21:21:45,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2024-10-12 21:21:45,023 INFO L432 NwaCegarLoop]: 1474 mSDtfsCounter, 19491 mSDsluCounter, 25207 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19491 SdHoareTripleChecker+Valid, 26681 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:45,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19491 Valid, 26681 Invalid, 1081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:21:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2024-10-12 21:21:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 5026. [2024-10-12 21:21:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5024 states have (on average 1.3919187898089171) internal successors, (6993), 5025 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 6993 transitions. [2024-10-12 21:21:45,251 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 6993 transitions. Word has length 59 [2024-10-12 21:21:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:45,251 INFO L471 AbstractCegarLoop]: Abstraction has 5026 states and 6993 transitions. [2024-10-12 21:21:45,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 6993 transitions. [2024-10-12 21:21:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:21:45,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:45,253 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:45,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 21:21:45,457 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 [2024-10-12 21:21:45,458 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:45,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 916843100, now seen corresponding path program 1 times [2024-10-12 21:21:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114619077] [2024-10-12 21:21:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114619077] [2024-10-12 21:21:47,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114619077] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953335709] [2024-10-12 21:21:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:47,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:47,021 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) [2024-10-12 21:21:47,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:21:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:47,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-12 21:21:47,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:50,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:53,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953335709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:53,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 57 [2024-10-12 21:21:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509920108] [2024-10-12 21:21:53,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-12 21:21:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-12 21:21:53,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 21:21:53,958 INFO L87 Difference]: Start difference. First operand 5026 states and 6993 transitions. Second operand has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:11,630 INFO L93 Difference]: Finished difference Result 9647 states and 12895 transitions. [2024-10-12 21:22:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-10-12 21:22:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 21:22:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:11,637 INFO L225 Difference]: With dead ends: 9647 [2024-10-12 21:22:11,637 INFO L226 Difference]: Without dead ends: 8319 [2024-10-12 21:22:11,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4759 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=3021, Invalid=13491, Unknown=0, NotChecked=0, Total=16512 [2024-10-12 21:22:11,641 INFO L432 NwaCegarLoop]: 1470 mSDtfsCounter, 27922 mSDsluCounter, 24174 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27922 SdHoareTripleChecker+Valid, 25644 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:11,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27922 Valid, 25644 Invalid, 2174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 21:22:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8319 states. [2024-10-12 21:22:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8319 to 6499. [2024-10-12 21:22:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 6497 states have (on average 1.3704786824688318) internal successors, (8904), 6498 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 8904 transitions. [2024-10-12 21:22:11,925 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 8904 transitions. Word has length 61 [2024-10-12 21:22:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:11,925 INFO L471 AbstractCegarLoop]: Abstraction has 6499 states and 8904 transitions. [2024-10-12 21:22:11,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 8904 transitions. [2024-10-12 21:22:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 21:22:11,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:11,928 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-12 21:22:11,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 21:22:12,129 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 [2024-10-12 21:22:12,129 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:12,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1767313277, now seen corresponding path program 1 times [2024-10-12 21:22:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783508281] [2024-10-12 21:22:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:12,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783508281] [2024-10-12 21:22:12,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783508281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:12,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650233959] [2024-10-12 21:22:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:12,793 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) [2024-10-12 21:22:12,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:22:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:12,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 21:22:12,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:13,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650233959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:14,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:14,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-10-12 21:22:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165978853] [2024-10-12 21:22:14,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:14,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 21:22:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 21:22:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:22:14,596 INFO L87 Difference]: Start difference. First operand 6499 states and 8904 transitions. Second operand has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:15,494 INFO L93 Difference]: Finished difference Result 15193 states and 20016 transitions. [2024-10-12 21:22:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 21:22:15,495 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-12 21:22:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:15,506 INFO L225 Difference]: With dead ends: 15193 [2024-10-12 21:22:15,506 INFO L226 Difference]: Without dead ends: 11359 [2024-10-12 21:22:15,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 21:22:15,511 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 20938 mSDsluCounter, 9098 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20938 SdHoareTripleChecker+Valid, 10603 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:15,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20938 Valid, 10603 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:22:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11359 states. [2024-10-12 21:22:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11359 to 10659. [2024-10-12 21:22:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10659 states, 10657 states have (on average 1.3154733977667261) internal successors, (14019), 10658 states have internal predecessors, (14019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10659 states to 10659 states and 14019 transitions. [2024-10-12 21:22:16,003 INFO L78 Accepts]: Start accepts. Automaton has 10659 states and 14019 transitions. Word has length 97 [2024-10-12 21:22:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:16,003 INFO L471 AbstractCegarLoop]: Abstraction has 10659 states and 14019 transitions. [2024-10-12 21:22:16,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10659 states and 14019 transitions. [2024-10-12 21:22:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 21:22:16,006 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:16,007 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-12 21:22:16,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 21:22:16,207 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 [2024-10-12 21:22:16,207 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:16,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1619378813, now seen corresponding path program 1 times [2024-10-12 21:22:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33973180] [2024-10-12 21:22:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:16,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33973180] [2024-10-12 21:22:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33973180] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107497694] [2024-10-12 21:22:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:16,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:16,740 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) [2024-10-12 21:22:16,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 21:22:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:16,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 21:22:16,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:17,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107497694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:18,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-10-12 21:22:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305294245] [2024-10-12 21:22:18,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:18,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 21:22:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 21:22:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:22:18,584 INFO L87 Difference]: Start difference. First operand 10659 states and 14019 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)