./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.4.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label07.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 4fdd5c1041cb450f4848a5d2243efab154355b9039f1e674dfe24010b27b76eb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:46:30,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:46:30,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:46:30,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:46:30,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:46:30,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:46:30,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:46:30,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:46:30,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:46:30,932 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:46:30,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:46:30,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:46:30,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:46:30,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:46:30,935 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:46:30,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:46:30,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:46:30,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:46:30,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:46:30,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:46:30,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:46:30,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:46:30,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:46:30,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:46:30,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:46:30,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:46:30,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:46:30,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:46:30,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:46:30,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:46:30,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:46:30,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:46:30,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:46:30,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:46:30,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:46:30,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:46:30,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:46:30,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:46:30,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:46:30,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:46:30,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:46:30,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:46:30,953 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fdd5c1041cb450f4848a5d2243efab154355b9039f1e674dfe24010b27b76eb [2024-10-11 04:46:31,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:46:31,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:46:31,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:46:31,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:46:31,229 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:46:31,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label07.c [2024-10-11 04:46:32,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:46:33,267 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:46:33,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label07.c [2024-10-11 04:46:33,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ddd2a56c/8ff8df9941f345d79b76bfc2c97396f2/FLAG2aa44983d [2024-10-11 04:46:33,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ddd2a56c/8ff8df9941f345d79b76bfc2c97396f2 [2024-10-11 04:46:33,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:46:33,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:46:33,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:46:33,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:46:33,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:46:33,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:46:33" (1/1) ... [2024-10-11 04:46:33,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5144519e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33, skipping insertion in model container [2024-10-11 04:46:33,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:46:33" (1/1) ... [2024-10-11 04:46:33,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:46:33,825 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.4.ufo.UNBOUNDED.pals+Problem12_label07.c[8712,8725] [2024-10-11 04:46:33,852 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.4.ufo.UNBOUNDED.pals+Problem12_label07.c[9554,9567] [2024-10-11 04:46:34,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:46:34,822 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:46:34,851 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.4.ufo.UNBOUNDED.pals+Problem12_label07.c[8712,8725] [2024-10-11 04:46:34,854 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.4.ufo.UNBOUNDED.pals+Problem12_label07.c[9554,9567] [2024-10-11 04:46:35,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:46:35,333 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:46:35,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35 WrapperNode [2024-10-11 04:46:35,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:46:35,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:46:35,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:46:35,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:46:35,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,713 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5039 [2024-10-11 04:46:35,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:46:35,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:46:35,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:46:35,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:46:35,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,959 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]. [2024-10-11 04:46:35,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:35,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:46:36,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:46:36,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:46:36,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:46:36,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (1/1) ... [2024-10-11 04:46:36,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:46:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:46:36,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:46:36,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:46:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:46:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:46:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:46:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:46:36,442 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:46:36,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:46:40,857 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-10-11 04:46:40,857 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:46:40,953 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:46:40,954 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 04:46:40,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:46:40 BoogieIcfgContainer [2024-10-11 04:46:40,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:46:40,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:46:40,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:46:40,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:46:40,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:46:33" (1/3) ... [2024-10-11 04:46:40,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5a113f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:46:40, skipping insertion in model container [2024-10-11 04:46:40,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:35" (2/3) ... [2024-10-11 04:46:40,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5a113f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:46:40, skipping insertion in model container [2024-10-11 04:46:40,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:46:40" (3/3) ... [2024-10-11 04:46:40,971 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label07.c [2024-10-11 04:46:41,007 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:46:41,007 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:46:41,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:46:41,126 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;@359e076b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:46:41,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:46:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 04:46:41,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:41,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 04:46:41,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:41,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:41,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1054292197, now seen corresponding path program 1 times [2024-10-11 04:46:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948370169] [2024-10-11 04:46:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948370169] [2024-10-11 04:46:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948370169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:41,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:41,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:46:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122616159] [2024-10-11 04:46:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:41,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:41,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:41,352 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:44,464 INFO L93 Difference]: Finished difference Result 2370 states and 4686 transitions. [2024-10-11 04:46:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:44,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-11 04:46:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:44,494 INFO L225 Difference]: With dead ends: 2370 [2024-10-11 04:46:44,495 INFO L226 Difference]: Without dead ends: 1569 [2024-10-11 04:46:44,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:44,506 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 924 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:44,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 538 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-11 04:46:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2024-10-11 04:46:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2024-10-11 04:46:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.643267389917039) internal successors, (2575), 1568 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2575 transitions. [2024-10-11 04:46:44,612 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2575 transitions. Word has length 6 [2024-10-11 04:46:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:44,612 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2575 transitions. [2024-10-11 04:46:44,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2575 transitions. [2024-10-11 04:46:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:46:44,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:44,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:44,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:46:44,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:44,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2024-10-11 04:46:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:44,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698501930] [2024-10-11 04:46:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:44,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:44,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:44,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698501930] [2024-10-11 04:46:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698501930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:44,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:44,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:46:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362228719] [2024-10-11 04:46:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:44,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:46:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:46:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:46:44,768 INFO L87 Difference]: Start difference. First operand 1569 states and 2575 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:44,833 INFO L93 Difference]: Finished difference Result 1609 states and 2637 transitions. [2024-10-11 04:46:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:46:44,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:46:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:44,839 INFO L225 Difference]: With dead ends: 1609 [2024-10-11 04:46:44,839 INFO L226 Difference]: Without dead ends: 1569 [2024-10-11 04:46:44,840 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 [2024-10-11 04:46:44,841 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:44,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2024-10-11 04:46:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2024-10-11 04:46:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.6285896617740907) internal successors, (2552), 1568 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2552 transitions. [2024-10-11 04:46:44,871 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2552 transitions. Word has length 19 [2024-10-11 04:46:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:44,872 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2552 transitions. [2024-10-11 04:46:44,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2552 transitions. [2024-10-11 04:46:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 04:46:44,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:44,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:44,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:46:44,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:44,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2024-10-11 04:46:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460751155] [2024-10-11 04:46:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:44,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460751155] [2024-10-11 04:46:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460751155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:45,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281268377] [2024-10-11 04:46:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:45,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:45,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:45,092 INFO L87 Difference]: Start difference. First operand 1569 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:45,339 INFO L93 Difference]: Finished difference Result 1865 states and 3024 transitions. [2024-10-11 04:46:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 04:46:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-11 04:46:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:45,347 INFO L225 Difference]: With dead ends: 1865 [2024-10-11 04:46:45,348 INFO L226 Difference]: Without dead ends: 1828 [2024-10-11 04:46:45,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:46:45,350 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:45,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2024-10-11 04:46:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1604. [2024-10-11 04:46:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.6279650436953808) internal successors, (2608), 1603 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2608 transitions. [2024-10-11 04:46:45,386 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2608 transitions. Word has length 41 [2024-10-11 04:46:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:45,386 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2608 transitions. [2024-10-11 04:46:45,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2608 transitions. [2024-10-11 04:46:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:46:45,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:45,388 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] [2024-10-11 04:46:45,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:46:45,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:45,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2024-10-11 04:46:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457132880] [2024-10-11 04:46:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:45,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:45,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457132880] [2024-10-11 04:46:45,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457132880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:45,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:45,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419732198] [2024-10-11 04:46:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:45,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:45,488 INFO L87 Difference]: Start difference. First operand 1604 states and 2608 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:45,541 INFO L93 Difference]: Finished difference Result 1737 states and 2819 transitions. [2024-10-11 04:46:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:45,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:46:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:45,548 INFO L225 Difference]: With dead ends: 1737 [2024-10-11 04:46:45,548 INFO L226 Difference]: Without dead ends: 1665 [2024-10-11 04:46:45,549 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 [2024-10-11 04:46:45,550 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 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 [2024-10-11 04:46:45,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-10-11 04:46:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1661. [2024-10-11 04:46:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.625075346594334) internal successors, (2696), 1660 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2696 transitions. [2024-10-11 04:46:45,577 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2696 transitions. Word has length 43 [2024-10-11 04:46:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:45,578 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2696 transitions. [2024-10-11 04:46:45,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2696 transitions. [2024-10-11 04:46:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:46:45,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:45,579 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] [2024-10-11 04:46:45,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:46:45,580 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:45,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2024-10-11 04:46:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82311083] [2024-10-11 04:46:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82311083] [2024-10-11 04:46:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82311083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:45,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:45,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142386616] [2024-10-11 04:46:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:45,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:45,797 INFO L87 Difference]: Start difference. First operand 1661 states and 2696 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:45,948 INFO L93 Difference]: Finished difference Result 1792 states and 2900 transitions. [2024-10-11 04:46:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:46:45,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:46:45,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:45,954 INFO L225 Difference]: With dead ends: 1792 [2024-10-11 04:46:45,955 INFO L226 Difference]: Without dead ends: 1663 [2024-10-11 04:46:45,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-11 04:46:45,957 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 1491 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:45,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1734 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-10-11 04:46:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2024-10-11 04:46:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.623869801084991) internal successors, (2694), 1660 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2694 transitions. [2024-10-11 04:46:45,993 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2694 transitions. Word has length 43 [2024-10-11 04:46:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:45,993 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2694 transitions. [2024-10-11 04:46:45,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2694 transitions. [2024-10-11 04:46:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 04:46:45,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:45,995 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] [2024-10-11 04:46:45,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:46:45,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:45,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2024-10-11 04:46:45,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432590941] [2024-10-11 04:46:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432590941] [2024-10-11 04:46:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432590941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:46,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:46:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957315749] [2024-10-11 04:46:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:46,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:46:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:46:46,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:46:46,139 INFO L87 Difference]: Start difference. First operand 1661 states and 2694 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:46,188 INFO L93 Difference]: Finished difference Result 1667 states and 2701 transitions. [2024-10-11 04:46:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:46:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-11 04:46:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:46,195 INFO L225 Difference]: With dead ends: 1667 [2024-10-11 04:46:46,196 INFO L226 Difference]: Without dead ends: 1665 [2024-10-11 04:46:46,196 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 [2024-10-11 04:46:46,197 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4555 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 [2024-10-11 04:46:46,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:46,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-10-11 04:46:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2024-10-11 04:46:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.6217678893565846) internal successors, (2697), 1664 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2697 transitions. [2024-10-11 04:46:46,234 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2697 transitions. Word has length 44 [2024-10-11 04:46:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:46,234 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2697 transitions. [2024-10-11 04:46:46,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2697 transitions. [2024-10-11 04:46:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:46:46,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:46,236 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] [2024-10-11 04:46:46,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 04:46:46,237 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:46,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2024-10-11 04:46:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394310408] [2024-10-11 04:46:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:46,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394310408] [2024-10-11 04:46:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394310408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617802001] [2024-10-11 04:46:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:46,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:46,292 INFO L87 Difference]: Start difference. First operand 1665 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:46,333 INFO L93 Difference]: Finished difference Result 1915 states and 3077 transitions. [2024-10-11 04:46:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2024-10-11 04:46:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:46,340 INFO L225 Difference]: With dead ends: 1915 [2024-10-11 04:46:46,340 INFO L226 Difference]: Without dead ends: 1782 [2024-10-11 04:46:46,341 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 [2024-10-11 04:46:46,342 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 [2024-10-11 04:46:46,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2024-10-11 04:46:46,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1780. [2024-10-11 04:46:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1778 states have (on average 1.6130483689538808) internal successors, (2868), 1779 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2868 transitions. [2024-10-11 04:46:46,382 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2868 transitions. Word has length 45 [2024-10-11 04:46:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:46,383 INFO L471 AbstractCegarLoop]: Abstraction has 1780 states and 2868 transitions. [2024-10-11 04:46:46,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2868 transitions. [2024-10-11 04:46:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:46:46,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:46,384 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] [2024-10-11 04:46:46,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 04:46:46,384 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:46,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2024-10-11 04:46:46,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:46,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275277483] [2024-10-11 04:46:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:46,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275277483] [2024-10-11 04:46:46,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275277483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:46,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:46,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:46,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831281375] [2024-10-11 04:46:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:46,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:46,442 INFO L87 Difference]: Start difference. First operand 1780 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:46,482 INFO L93 Difference]: Finished difference Result 2244 states and 3562 transitions. [2024-10-11 04:46:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2024-10-11 04:46:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:46,490 INFO L225 Difference]: With dead ends: 2244 [2024-10-11 04:46:46,490 INFO L226 Difference]: Without dead ends: 1996 [2024-10-11 04:46:46,491 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 [2024-10-11 04:46:46,492 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 [2024-10-11 04:46:46,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2024-10-11 04:46:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1994. [2024-10-11 04:46:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1992 states have (on average 1.5953815261044177) internal successors, (3178), 1993 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3178 transitions. [2024-10-11 04:46:46,533 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3178 transitions. Word has length 45 [2024-10-11 04:46:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:46,534 INFO L471 AbstractCegarLoop]: Abstraction has 1994 states and 3178 transitions. [2024-10-11 04:46:46,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3178 transitions. [2024-10-11 04:46:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:46:46,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:46,535 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] [2024-10-11 04:46:46,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 04:46:46,535 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:46,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2024-10-11 04:46:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432801303] [2024-10-11 04:46:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432801303] [2024-10-11 04:46:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432801303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681711960] [2024-10-11 04:46:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:46,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:46,594 INFO L87 Difference]: Start difference. First operand 1994 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:46,639 INFO L93 Difference]: Finished difference Result 2854 states and 4436 transitions. [2024-10-11 04:46:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2024-10-11 04:46:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:46,648 INFO L225 Difference]: With dead ends: 2854 [2024-10-11 04:46:46,648 INFO L226 Difference]: Without dead ends: 2392 [2024-10-11 04:46:46,649 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 [2024-10-11 04:46:46,650 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 [2024-10-11 04:46:46,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2024-10-11 04:46:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2390. [2024-10-11 04:46:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2388 states have (on average 1.5636515912897822) internal successors, (3734), 2389 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3734 transitions. [2024-10-11 04:46:46,701 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3734 transitions. Word has length 45 [2024-10-11 04:46:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:46,701 INFO L471 AbstractCegarLoop]: Abstraction has 2390 states and 3734 transitions. [2024-10-11 04:46:46,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-11 04:46:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3734 transitions. [2024-10-11 04:46:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-11 04:46:46,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:46,702 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] [2024-10-11 04:46:46,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 04:46:46,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:46,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2024-10-11 04:46:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:46,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891150199] [2024-10-11 04:46:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:46,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891150199] [2024-10-11 04:46:46,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891150199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:46,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309546709] [2024-10-11 04:46:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:46,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:46,744 INFO L87 Difference]: Start difference. First operand 2390 states and 3734 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) 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) [2024-10-11 04:46:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:46,795 INFO L93 Difference]: Finished difference Result 3293 states and 5068 transitions. [2024-10-11 04:46:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:46,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) 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 [2024-10-11 04:46:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:46,805 INFO L225 Difference]: With dead ends: 3293 [2024-10-11 04:46:46,806 INFO L226 Difference]: Without dead ends: 2794 [2024-10-11 04:46:46,807 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 [2024-10-11 04:46:46,808 INFO L432 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 [2024-10-11 04:46:46,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2024-10-11 04:46:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2792. [2024-10-11 04:46:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2790 states have (on average 1.542652329749104) internal successors, (4304), 2791 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4304 transitions. [2024-10-11 04:46:46,950 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4304 transitions. Word has length 47 [2024-10-11 04:46:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:46,951 INFO L471 AbstractCegarLoop]: Abstraction has 2792 states and 4304 transitions. [2024-10-11 04:46:46,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) 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) [2024-10-11 04:46:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4304 transitions. [2024-10-11 04:46:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:46:46,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:46,952 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:46,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 04:46:46,952 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:46,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2024-10-11 04:46:46,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:46,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312630744] [2024-10-11 04:46:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 04:46:47,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312630744] [2024-10-11 04:46:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312630744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:47,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:47,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354513901] [2024-10-11 04:46:47,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:47,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:47,073 INFO L87 Difference]: Start difference. First operand 2792 states and 4304 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:47,348 INFO L93 Difference]: Finished difference Result 8098 states and 11917 transitions. [2024-10-11 04:46:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:46:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 [2024-10-11 04:46:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:47,365 INFO L225 Difference]: With dead ends: 8098 [2024-10-11 04:46:47,365 INFO L226 Difference]: Without dead ends: 6840 [2024-10-11 04:46:47,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:46:47,368 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:47,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2024-10-11 04:46:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 4048. [2024-10-11 04:46:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4046 states have (on average 1.504695996045477) internal successors, (6088), 4047 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6088 transitions. [2024-10-11 04:46:47,462 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6088 transitions. Word has length 61 [2024-10-11 04:46:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:47,462 INFO L471 AbstractCegarLoop]: Abstraction has 4048 states and 6088 transitions. [2024-10-11 04:46:47,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6088 transitions. [2024-10-11 04:46:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:46:47,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:47,463 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:47,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 04:46:47,464 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:47,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2024-10-11 04:46:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055349716] [2024-10-11 04:46:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 04:46:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055349716] [2024-10-11 04:46:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055349716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:47,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:47,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:47,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28610379] [2024-10-11 04:46:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:47,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:47,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:47,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:47,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:47,569 INFO L87 Difference]: Start difference. First operand 4048 states and 6088 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:47,839 INFO L93 Difference]: Finished difference Result 9354 states and 13701 transitions. [2024-10-11 04:46:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:46:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2024-10-11 04:46:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:47,858 INFO L225 Difference]: With dead ends: 9354 [2024-10-11 04:46:47,859 INFO L226 Difference]: Without dead ends: 8096 [2024-10-11 04:46:47,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:46:47,864 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 4677 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:47,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3299 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2024-10-11 04:46:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 5936. [2024-10-11 04:46:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5934 states have (on average 1.4735422986181328) internal successors, (8744), 5935 states have internal predecessors, (8744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 8744 transitions. [2024-10-11 04:46:48,000 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 8744 transitions. Word has length 61 [2024-10-11 04:46:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:48,000 INFO L471 AbstractCegarLoop]: Abstraction has 5936 states and 8744 transitions. [2024-10-11 04:46:48,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 8744 transitions. [2024-10-11 04:46:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:46:48,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:48,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:48,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 04:46:48,002 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:48,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2024-10-11 04:46:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:48,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719432434] [2024-10-11 04:46:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 04:46:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719432434] [2024-10-11 04:46:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719432434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591008903] [2024-10-11 04:46:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:48,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:48,116 INFO L87 Difference]: Start difference. First operand 5936 states and 8744 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:48,370 INFO L93 Difference]: Finished difference Result 10610 states and 15485 transitions. [2024-10-11 04:46:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:46:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-11 04:46:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:48,386 INFO L225 Difference]: With dead ends: 10610 [2024-10-11 04:46:48,386 INFO L226 Difference]: Without dead ends: 9352 [2024-10-11 04:46:48,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:46:48,394 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4667 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:48,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3303 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2024-10-11 04:46:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 7192. [2024-10-11 04:46:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7192 states, 7190 states have (on average 1.4642559109874826) internal successors, (10528), 7191 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 10528 transitions. [2024-10-11 04:46:48,619 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 10528 transitions. Word has length 61 [2024-10-11 04:46:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:48,620 INFO L471 AbstractCegarLoop]: Abstraction has 7192 states and 10528 transitions. [2024-10-11 04:46:48,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 10528 transitions. [2024-10-11 04:46:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 04:46:48,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:48,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:48,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 04:46:48,621 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:48,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2024-10-11 04:46:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:48,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002955263] [2024-10-11 04:46:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002955263] [2024-10-11 04:46:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002955263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116298879] [2024-10-11 04:46:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:48,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:48,693 INFO L87 Difference]: Start difference. First operand 7192 states and 10528 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:48,866 INFO L93 Difference]: Finished difference Result 11245 states and 16380 transitions. [2024-10-11 04:46:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 04:46:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:48,888 INFO L225 Difference]: With dead ends: 11245 [2024-10-11 04:46:48,892 INFO L226 Difference]: Without dead ends: 5587 [2024-10-11 04:46:48,906 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 [2024-10-11 04:46:48,906 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 [2024-10-11 04:46:48,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2024-10-11 04:46:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2024-10-11 04:46:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.4818198101379187) internal successors, (8273), 5584 states have internal predecessors, (8273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 8273 transitions. [2024-10-11 04:46:49,067 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 8273 transitions. Word has length 63 [2024-10-11 04:46:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:49,067 INFO L471 AbstractCegarLoop]: Abstraction has 5585 states and 8273 transitions. [2024-10-11 04:46:49,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 8273 transitions. [2024-10-11 04:46:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 04:46:49,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:49,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 04:46:49,069 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:49,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2024-10-11 04:46:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:49,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247748288] [2024-10-11 04:46:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:46:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:49,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247748288] [2024-10-11 04:46:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247748288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:46:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545209139] [2024-10-11 04:46:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:49,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:46:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:46:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:46:49,193 INFO L87 Difference]: Start difference. First operand 5585 states and 8273 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:49,434 INFO L93 Difference]: Finished difference Result 9179 states and 13462 transitions. [2024-10-11 04:46:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:46:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 04:46:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:49,445 INFO L225 Difference]: With dead ends: 9179 [2024-10-11 04:46:49,445 INFO L226 Difference]: Without dead ends: 8281 [2024-10-11 04:46:49,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:46:49,447 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:49,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:46:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2024-10-11 04:46:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6481. [2024-10-11 04:46:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6479 states have (on average 1.474455934557802) internal successors, (9553), 6480 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 9553 transitions. [2024-10-11 04:46:49,574 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 9553 transitions. Word has length 63 [2024-10-11 04:46:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:49,574 INFO L471 AbstractCegarLoop]: Abstraction has 6481 states and 9553 transitions. [2024-10-11 04:46:49,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 9553 transitions. [2024-10-11 04:46:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 04:46:49,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:49,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:49,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 04:46:49,576 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:49,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2024-10-11 04:46:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899391660] [2024-10-11 04:46:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899391660] [2024-10-11 04:46:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899391660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:49,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:49,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:49,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746531633] [2024-10-11 04:46:49,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:49,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:49,664 INFO L87 Difference]: Start difference. First operand 6481 states and 9553 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:49,756 INFO L93 Difference]: Finished difference Result 8949 states and 13075 transitions. [2024-10-11 04:46:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-11 04:46:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:49,766 INFO L225 Difference]: With dead ends: 8949 [2024-10-11 04:46:49,766 INFO L226 Difference]: Without dead ends: 4019 [2024-10-11 04:46:49,772 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 [2024-10-11 04:46:49,773 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 [2024-10-11 04:46:49,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2024-10-11 04:46:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4017. [2024-10-11 04:46:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4015 states have (on average 1.491656288916563) internal successors, (5989), 4016 states have internal predecessors, (5989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 5989 transitions. [2024-10-11 04:46:49,869 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 5989 transitions. Word has length 64 [2024-10-11 04:46:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:49,869 INFO L471 AbstractCegarLoop]: Abstraction has 4017 states and 5989 transitions. [2024-10-11 04:46:49,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 5989 transitions. [2024-10-11 04:46:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 04:46:49,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:49,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:49,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 04:46:49,871 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:49,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2024-10-11 04:46:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:49,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498245388] [2024-10-11 04:46:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:50,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498245388] [2024-10-11 04:46:50,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498245388] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:50,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13307299] [2024-10-11 04:46:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:50,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:50,024 INFO L87 Difference]: Start difference. First operand 4017 states and 5989 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:50,068 INFO L93 Difference]: Finished difference Result 5253 states and 7729 transitions. [2024-10-11 04:46:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-11 04:46:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:50,072 INFO L225 Difference]: With dead ends: 5253 [2024-10-11 04:46:50,072 INFO L226 Difference]: Without dead ends: 2787 [2024-10-11 04:46:50,075 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 [2024-10-11 04:46:50,075 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 [2024-10-11 04:46:50,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2024-10-11 04:46:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2024-10-11 04:46:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.5195831836148042) internal successors, (4229), 2784 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4229 transitions. [2024-10-11 04:46:50,112 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4229 transitions. Word has length 66 [2024-10-11 04:46:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:50,112 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4229 transitions. [2024-10-11 04:46:50,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4229 transitions. [2024-10-11 04:46:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 04:46:50,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:50,113 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:50,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 04:46:50,113 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:50,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:50,114 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2024-10-11 04:46:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:50,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761965005] [2024-10-11 04:46:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761965005] [2024-10-11 04:46:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761965005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:46:50,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:46:50,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:46:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091812456] [2024-10-11 04:46:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:46:50,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:46:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:46:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:46:50,174 INFO L87 Difference]: Start difference. First operand 2785 states and 4229 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:50,207 INFO L93 Difference]: Finished difference Result 3405 states and 5089 transitions. [2024-10-11 04:46:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:46:50,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-10-11 04:46:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:50,211 INFO L225 Difference]: With dead ends: 3405 [2024-10-11 04:46:50,211 INFO L226 Difference]: Without dead ends: 2171 [2024-10-11 04:46:50,212 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 [2024-10-11 04:46:50,212 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 [2024-10-11 04:46:50,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:46:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2024-10-11 04:46:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2024-10-11 04:46:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.5505306875865252) internal successors, (3360), 2168 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3360 transitions. [2024-10-11 04:46:50,240 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3360 transitions. Word has length 68 [2024-10-11 04:46:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:50,240 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 3360 transitions. [2024-10-11 04:46:50,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3360 transitions. [2024-10-11 04:46:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 04:46:50,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:50,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:50,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 04:46:50,242 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:50,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2024-10-11 04:46:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050667712] [2024-10-11 04:46:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:46:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:46:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050667712] [2024-10-11 04:46:52,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050667712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:46:52,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748213103] [2024-10-11 04:46:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:52,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:46:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:46:52,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:46:52,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:46:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:46:52,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 04:46:52,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:46:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:46:52,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:46:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:46:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748213103] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:46:52,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:46:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-11 04:46:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633622453] [2024-10-11 04:46:52,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:46:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 04:46:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:46:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 04:46:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-10-11 04:46:52,623 INFO L87 Difference]: Start difference. First operand 2169 states and 3360 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:46:56,917 INFO L93 Difference]: Finished difference Result 6694 states and 9437 transitions. [2024-10-11 04:46:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-11 04:46:56,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 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 70 [2024-10-11 04:46:56,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:46:56,926 INFO L225 Difference]: With dead ends: 6694 [2024-10-11 04:46:56,927 INFO L226 Difference]: Without dead ends: 6076 [2024-10-11 04:46:56,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1016, Invalid=4386, Unknown=0, NotChecked=0, Total=5402 [2024-10-11 04:46:56,929 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 15057 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15057 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 04:46:56,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15057 Valid, 6409 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 04:46:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2024-10-11 04:46:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 5956. [2024-10-11 04:46:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5954 states have (on average 1.3701713134027544) internal successors, (8158), 5955 states have internal predecessors, (8158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 8158 transitions. [2024-10-11 04:46:57,055 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 8158 transitions. Word has length 70 [2024-10-11 04:46:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:46:57,055 INFO L471 AbstractCegarLoop]: Abstraction has 5956 states and 8158 transitions. [2024-10-11 04:46:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:46:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 8158 transitions. [2024-10-11 04:46:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 04:46:57,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:46:57,057 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:46:57,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 04:46:57,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:46:57,258 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:46:57,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:46:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -158719632, now seen corresponding path program 1 times [2024-10-11 04:46:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:46:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653101349] [2024-10-11 04:46:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:46:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:46:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:00,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653101349] [2024-10-11 04:47:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653101349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:00,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976199714] [2024-10-11 04:47:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:00,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:00,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:00,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:00,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:47:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:00,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:47:00,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:00,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:01,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976199714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:01,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:01,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-11 04:47:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588487717] [2024-10-11 04:47:01,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:01,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 04:47:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 04:47:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-11 04:47:01,318 INFO L87 Difference]: Start difference. First operand 5956 states and 8158 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:05,205 INFO L93 Difference]: Finished difference Result 25262 states and 33190 transitions. [2024-10-11 04:47:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 04:47:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-11 04:47:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:05,341 INFO L225 Difference]: With dead ends: 25262 [2024-10-11 04:47:05,341 INFO L226 Difference]: Without dead ends: 21136 [2024-10-11 04:47:05,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-11 04:47:05,348 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 20290 mSDsluCounter, 5247 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20290 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:05,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20290 Valid, 6758 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 04:47:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2024-10-11 04:47:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 20592. [2024-10-11 04:47:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20592 states, 20590 states have (on average 1.2879067508499271) internal successors, (26518), 20591 states have internal predecessors, (26518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20592 states to 20592 states and 26518 transitions. [2024-10-11 04:47:06,253 INFO L78 Accepts]: Start accepts. Automaton has 20592 states and 26518 transitions. Word has length 71 [2024-10-11 04:47:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:06,254 INFO L471 AbstractCegarLoop]: Abstraction has 20592 states and 26518 transitions. [2024-10-11 04:47:06,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20592 states and 26518 transitions. [2024-10-11 04:47:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 04:47:06,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:06,255 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:06,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:47:06,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:06,457 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:06,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1415192254, now seen corresponding path program 1 times [2024-10-11 04:47:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897352553] [2024-10-11 04:47:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897352553] [2024-10-11 04:47:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897352553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372141110] [2024-10-11 04:47:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:06,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:06,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:47:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:07,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 04:47:07,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:07,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372141110] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:08,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-10-11 04:47:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786184809] [2024-10-11 04:47:08,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:08,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 04:47:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 04:47:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2024-10-11 04:47:08,982 INFO L87 Difference]: Start difference. First operand 20592 states and 26518 transitions. Second operand has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:12,718 INFO L93 Difference]: Finished difference Result 54150 states and 68297 transitions. [2024-10-11 04:47:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-11 04:47:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-11 04:47:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:12,770 INFO L225 Difference]: With dead ends: 54150 [2024-10-11 04:47:12,770 INFO L226 Difference]: Without dead ends: 35621 [2024-10-11 04:47:12,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=816, Invalid=3216, Unknown=0, NotChecked=0, Total=4032 [2024-10-11 04:47:12,794 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 13428 mSDsluCounter, 15573 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13428 SdHoareTripleChecker+Valid, 17085 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:12,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13428 Valid, 17085 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 04:47:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35621 states. [2024-10-11 04:47:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35621 to 30017. [2024-10-11 04:47:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30017 states, 30015 states have (on average 1.2547059803431617) internal successors, (37660), 30016 states have internal predecessors, (37660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 37660 transitions. [2024-10-11 04:47:14,432 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 37660 transitions. Word has length 71 [2024-10-11 04:47:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:14,433 INFO L471 AbstractCegarLoop]: Abstraction has 30017 states and 37660 transitions. [2024-10-11 04:47:14,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 37660 transitions. [2024-10-11 04:47:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 04:47:14,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:14,439 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:14,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 04:47:14,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:14,640 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:14,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1053335691, now seen corresponding path program 1 times [2024-10-11 04:47:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351891228] [2024-10-11 04:47:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351891228] [2024-10-11 04:47:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351891228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905721989] [2024-10-11 04:47:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:15,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:15,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:15,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:15,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:47:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:15,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 04:47:15,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:15,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905721989] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:16,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:16,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-11 04:47:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408426989] [2024-10-11 04:47:16,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 04:47:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 04:47:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-10-11 04:47:16,229 INFO L87 Difference]: Start difference. First operand 30017 states and 37660 transitions. Second operand has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:18,366 INFO L93 Difference]: Finished difference Result 56105 states and 70213 transitions. [2024-10-11 04:47:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 04:47:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-11 04:47:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:18,416 INFO L225 Difference]: With dead ends: 56105 [2024-10-11 04:47:18,416 INFO L226 Difference]: Without dead ends: 31257 [2024-10-11 04:47:18,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 04:47:18,448 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 12251 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12251 SdHoareTripleChecker+Valid, 4802 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:18,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12251 Valid, 4802 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:47:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31257 states. [2024-10-11 04:47:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31257 to 29329. [2024-10-11 04:47:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29329 states, 29327 states have (on average 1.243427558222798) internal successors, (36466), 29328 states have internal predecessors, (36466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29329 states to 29329 states and 36466 transitions. [2024-10-11 04:47:20,016 INFO L78 Accepts]: Start accepts. Automaton has 29329 states and 36466 transitions. Word has length 72 [2024-10-11 04:47:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:20,016 INFO L471 AbstractCegarLoop]: Abstraction has 29329 states and 36466 transitions. [2024-10-11 04:47:20,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 29329 states and 36466 transitions. [2024-10-11 04:47:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:47:20,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:20,022 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:20,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 04:47:20,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 04:47:20,223 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:20,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2024-10-11 04:47:20,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:20,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424537622] [2024-10-11 04:47:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:20,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424537622] [2024-10-11 04:47:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424537622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375400642] [2024-10-11 04:47:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:21,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:21,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 04:47:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:21,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 04:47:21,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:22,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375400642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:25,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:25,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 21] total 48 [2024-10-11 04:47:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683237697] [2024-10-11 04:47:25,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 04:47:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 04:47:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1977, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 04:47:25,357 INFO L87 Difference]: Start difference. First operand 29329 states and 36466 transitions. Second operand has 48 states, 48 states have (on average 4.166666666666667) internal successors, (200), 48 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:36,656 INFO L93 Difference]: Finished difference Result 77435 states and 95537 transitions. [2024-10-11 04:47:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-10-11 04:47:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.166666666666667) internal successors, (200), 48 states have internal predecessors, (200), 0 states have call successors, (0), 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 73 [2024-10-11 04:47:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:36,909 INFO L225 Difference]: With dead ends: 77435 [2024-10-11 04:47:36,909 INFO L226 Difference]: Without dead ends: 66819 [2024-10-11 04:47:36,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5584 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3652, Invalid=13118, Unknown=0, NotChecked=0, Total=16770 [2024-10-11 04:47:36,931 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 30817 mSDsluCounter, 19067 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30817 SdHoareTripleChecker+Valid, 20593 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:36,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30817 Valid, 20593 Invalid, 1735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [145 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 04:47:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66819 states. [2024-10-11 04:47:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66819 to 26085. [2024-10-11 04:47:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26085 states, 26083 states have (on average 1.2440286776827818) internal successors, (32448), 26084 states have internal predecessors, (32448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26085 states to 26085 states and 32448 transitions. [2024-10-11 04:47:38,227 INFO L78 Accepts]: Start accepts. Automaton has 26085 states and 32448 transitions. Word has length 73 [2024-10-11 04:47:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:38,228 INFO L471 AbstractCegarLoop]: Abstraction has 26085 states and 32448 transitions. [2024-10-11 04:47:38,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.166666666666667) internal successors, (200), 48 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26085 states and 32448 transitions. [2024-10-11 04:47:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:47:38,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:38,229 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:38,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 04:47:38,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 04:47:38,430 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:38,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1916430198, now seen corresponding path program 1 times [2024-10-11 04:47:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:38,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302994097] [2024-10-11 04:47:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:38,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302994097] [2024-10-11 04:47:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302994097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845395642] [2024-10-11 04:47:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:39,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:39,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:39,085 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:39,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 04:47:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 04:47:39,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:39,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845395642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:40,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-10-11 04:47:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768888091] [2024-10-11 04:47:40,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:40,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 04:47:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 04:47:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2024-10-11 04:47:40,758 INFO L87 Difference]: Start difference. First operand 26085 states and 32448 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:43,608 INFO L93 Difference]: Finished difference Result 45358 states and 56513 transitions. [2024-10-11 04:47:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 04:47:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 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 73 [2024-10-11 04:47:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:43,648 INFO L225 Difference]: With dead ends: 45358 [2024-10-11 04:47:43,649 INFO L226 Difference]: Without dead ends: 34312 [2024-10-11 04:47:43,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 04:47:43,658 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 19017 mSDsluCounter, 21105 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19017 SdHoareTripleChecker+Valid, 22618 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:43,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19017 Valid, 22618 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:47:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34312 states. [2024-10-11 04:47:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34312 to 21695. [2024-10-11 04:47:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21695 states, 21693 states have (on average 1.249804084266814) internal successors, (27112), 21694 states have internal predecessors, (27112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21695 states to 21695 states and 27112 transitions. [2024-10-11 04:47:44,755 INFO L78 Accepts]: Start accepts. Automaton has 21695 states and 27112 transitions. Word has length 73 [2024-10-11 04:47:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:44,758 INFO L471 AbstractCegarLoop]: Abstraction has 21695 states and 27112 transitions. [2024-10-11 04:47:44,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 21695 states and 27112 transitions. [2024-10-11 04:47:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 04:47:44,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:44,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:44,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 04:47:44,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-11 04:47:44,962 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:44,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1652561531, now seen corresponding path program 1 times [2024-10-11 04:47:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797888335] [2024-10-11 04:47:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:44,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797888335] [2024-10-11 04:47:46,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797888335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594230798] [2024-10-11 04:47:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:46,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:46,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:46,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 04:47:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:46,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 04:47:46,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:48,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594230798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:50,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 15] total 53 [2024-10-11 04:47:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569252889] [2024-10-11 04:47:50,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:50,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 04:47:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 04:47:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2546, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 04:47:50,884 INFO L87 Difference]: Start difference. First operand 21695 states and 27112 transitions. Second operand has 53 states, 53 states have (on average 3.7735849056603774) internal successors, (200), 53 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)