./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.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/eca-rers2012/Problem11_label23.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 f869ff34b8d1fc9233da1bce651f8bc007d942cb0a36d4a975409aebb2d888b1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:18:09,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:18:09,341 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:18:09,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:18:09,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:18:09,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:18:09,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:18:09,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:18:09,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:18:09,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:18:09,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:18:09,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:18:09,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:18:09,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:18:09,402 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:18:09,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:18:09,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:18:09,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:18:09,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:18:09,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:18:09,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:18:09,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:18:09,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:18:09,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:18:09,407 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:18:09,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:18:09,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:18:09,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:18:09,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:18:09,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:18:09,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:18:09,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:18:09,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:18:09,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:18:09,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:18:09,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:18:09,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:18:09,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:18:09,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:18:09,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:18:09,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:18:09,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:18:09,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f869ff34b8d1fc9233da1bce651f8bc007d942cb0a36d4a975409aebb2d888b1 [2024-10-10 23:18:09,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:18:09,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:18:09,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:18:09,808 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:18:09,809 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:18:09,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.c [2024-10-10 23:18:11,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:18:11,310 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:18:11,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.c [2024-10-10 23:18:11,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/11ca5e2d6/bcda0aa9d581452aa461ebc974b03b98/FLAG0685a7799 [2024-10-10 23:18:11,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/11ca5e2d6/bcda0aa9d581452aa461ebc974b03b98 [2024-10-10 23:18:11,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:18:11,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:18:11,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:18:11,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:18:11,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:18:11,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:11,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc28494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11, skipping insertion in model container [2024-10-10 23:18:11,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:11,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:18:11,617 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/eca-rers2012/Problem11_label23.c[9364,9377] [2024-10-10 23:18:11,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:18:11,767 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:18:11,823 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/eca-rers2012/Problem11_label23.c[9364,9377] [2024-10-10 23:18:11,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:18:11,977 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:18:11,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11 WrapperNode [2024-10-10 23:18:11,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:18:11,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:18:11,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:18:11,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:18:11,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,081 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-10 23:18:12,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:18:12,082 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:18:12,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:18:12,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:18:12,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,144 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]. [2024-10-10 23:18:12,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:18:12,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:18:12,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:18:12,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:18:12,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (1/1) ... [2024-10-10 23:18:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:18:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:12,237 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) [2024-10-10 23:18:12,247 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 [2024-10-10 23:18:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:18:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:18:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:18:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:18:12,343 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:18:12,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:18:13,634 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-10 23:18:13,635 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:18:13,668 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:18:13,668 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:18:13,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:18:13 BoogieIcfgContainer [2024-10-10 23:18:13,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:18:13,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:18:13,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:18:13,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:18:13,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:18:11" (1/3) ... [2024-10-10 23:18:13,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab44069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:18:13, skipping insertion in model container [2024-10-10 23:18:13,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:11" (2/3) ... [2024-10-10 23:18:13,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab44069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:18:13, skipping insertion in model container [2024-10-10 23:18:13,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:18:13" (3/3) ... [2024-10-10 23:18:13,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label23.c [2024-10-10 23:18:13,687 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:18:13,687 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:18:13,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:18:13,749 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;@4f3894c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:18:13,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:18:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-10 23:18:13,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:13,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:13,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:13,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1368918646, now seen corresponding path program 1 times [2024-10-10 23:18:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:13,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870411568] [2024-10-10 23:18:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870411568] [2024-10-10 23:18:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870411568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:13,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:13,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735538692] [2024-10-10 23:18:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:13,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:18:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:18:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:18:13,939 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2024-10-10 23:18:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:13,985 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-10 23:18:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:18:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 [2024-10-10 23:18:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:13,995 INFO L225 Difference]: With dead ends: 441 [2024-10-10 23:18:13,995 INFO L226 Difference]: Without dead ends: 219 [2024-10-10 23:18:13,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:18:14,000 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:14,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:18:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-10 23:18:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-10 23:18:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-10 23:18:14,033 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 64 [2024-10-10 23:18:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:14,033 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-10 23:18:14,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2024-10-10 23:18:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-10 23:18:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-10 23:18:14,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:14,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:14,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:18:14,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:14,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1379110090, now seen corresponding path program 1 times [2024-10-10 23:18:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307982605] [2024-10-10 23:18:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307982605] [2024-10-10 23:18:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307982605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:14,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934976874] [2024-10-10 23:18:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:14,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:14,290 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2024-10-10 23:18:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:15,000 INFO L93 Difference]: Finished difference Result 639 states and 1042 transitions. [2024-10-10 23:18:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:15,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 [2024-10-10 23:18:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:15,003 INFO L225 Difference]: With dead ends: 639 [2024-10-10 23:18:15,003 INFO L226 Difference]: Without dead ends: 421 [2024-10-10 23:18:15,004 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 [2024-10-10 23:18:15,005 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 147 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:15,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 120 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-10 23:18:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 411. [2024-10-10 23:18:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.524390243902439) internal successors, (625), 410 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 625 transitions. [2024-10-10 23:18:15,033 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 625 transitions. Word has length 64 [2024-10-10 23:18:15,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:15,034 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 625 transitions. [2024-10-10 23:18:15,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2024-10-10 23:18:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 625 transitions. [2024-10-10 23:18:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-10 23:18:15,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:15,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:15,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:18:15,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:15,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1049418632, now seen corresponding path program 1 times [2024-10-10 23:18:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402493317] [2024-10-10 23:18:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402493317] [2024-10-10 23:18:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402493317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:15,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962821458] [2024-10-10 23:18:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:15,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:15,216 INFO L87 Difference]: Start difference. First operand 411 states and 625 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:15,830 INFO L93 Difference]: Finished difference Result 1193 states and 1820 transitions. [2024-10-10 23:18:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:15,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-10-10 23:18:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:15,833 INFO L225 Difference]: With dead ends: 1193 [2024-10-10 23:18:15,833 INFO L226 Difference]: Without dead ends: 783 [2024-10-10 23:18:15,834 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 [2024-10-10 23:18:15,835 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:15,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 152 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-10-10 23:18:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2024-10-10 23:18:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.3746803069053708) internal successors, (1075), 782 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1075 transitions. [2024-10-10 23:18:15,869 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1075 transitions. Word has length 130 [2024-10-10 23:18:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:15,869 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1075 transitions. [2024-10-10 23:18:15,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1075 transitions. [2024-10-10 23:18:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-10 23:18:15,873 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:15,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:15,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:18:15,874 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:15,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 563933698, now seen corresponding path program 1 times [2024-10-10 23:18:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387777310] [2024-10-10 23:18:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387777310] [2024-10-10 23:18:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387777310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938934915] [2024-10-10 23:18:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:16,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:16,227 INFO L87 Difference]: Start difference. First operand 783 states and 1075 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:16,828 INFO L93 Difference]: Finished difference Result 1935 states and 2598 transitions. [2024-10-10 23:18:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-10-10 23:18:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:16,832 INFO L225 Difference]: With dead ends: 1935 [2024-10-10 23:18:16,832 INFO L226 Difference]: Without dead ends: 1153 [2024-10-10 23:18:16,834 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 [2024-10-10 23:18:16,834 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:16,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 188 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-10-10 23:18:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1152. [2024-10-10 23:18:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.2701998262380538) internal successors, (1462), 1151 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1462 transitions. [2024-10-10 23:18:16,854 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1462 transitions. Word has length 134 [2024-10-10 23:18:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 1152 states and 1462 transitions. [2024-10-10 23:18:16,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1462 transitions. [2024-10-10 23:18:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-10 23:18:16,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:16,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:16,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:18:16,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:16,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1396061959, now seen corresponding path program 1 times [2024-10-10 23:18:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784435558] [2024-10-10 23:18:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784435558] [2024-10-10 23:18:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784435558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:17,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244660529] [2024-10-10 23:18:17,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:17,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:17,069 INFO L87 Difference]: Start difference. First operand 1152 states and 1462 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:17,680 INFO L93 Difference]: Finished difference Result 2678 states and 3480 transitions. [2024-10-10 23:18:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2024-10-10 23:18:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:17,686 INFO L225 Difference]: With dead ends: 2678 [2024-10-10 23:18:17,687 INFO L226 Difference]: Without dead ends: 1711 [2024-10-10 23:18:17,688 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 [2024-10-10 23:18:17,691 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 141 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:17,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 329 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2024-10-10 23:18:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1520. [2024-10-10 23:18:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 1.2560895325872283) internal successors, (1908), 1519 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1908 transitions. [2024-10-10 23:18:17,714 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1908 transitions. Word has length 176 [2024-10-10 23:18:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:17,714 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 1908 transitions. [2024-10-10 23:18:17,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1908 transitions. [2024-10-10 23:18:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-10 23:18:17,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:17,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:18:17,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:18:17,717 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:17,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1403523461, now seen corresponding path program 1 times [2024-10-10 23:18:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:17,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074676446] [2024-10-10 23:18:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-10 23:18:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074676446] [2024-10-10 23:18:17,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074676446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:17,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:17,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201036918] [2024-10-10 23:18:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:17,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:17,922 INFO L87 Difference]: Start difference. First operand 1520 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2024-10-10 23:18:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:18,549 INFO L93 Difference]: Finished difference Result 3596 states and 4558 transitions. [2024-10-10 23:18:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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 246 [2024-10-10 23:18:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:18,555 INFO L225 Difference]: With dead ends: 3596 [2024-10-10 23:18:18,555 INFO L226 Difference]: Without dead ends: 2077 [2024-10-10 23:18:18,557 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 [2024-10-10 23:18:18,557 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:18,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 388 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-10-10 23:18:18,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1888. [2024-10-10 23:18:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.2474827768945416) internal successors, (2354), 1887 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2354 transitions. [2024-10-10 23:18:18,611 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2354 transitions. Word has length 246 [2024-10-10 23:18:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:18,612 INFO L471 AbstractCegarLoop]: Abstraction has 1888 states and 2354 transitions. [2024-10-10 23:18:18,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2024-10-10 23:18:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2354 transitions. [2024-10-10 23:18:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-10-10 23:18:18,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:18,615 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:18,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:18:18,615 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:18,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 636706630, now seen corresponding path program 1 times [2024-10-10 23:18:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923210695] [2024-10-10 23:18:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:18,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923210695] [2024-10-10 23:18:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923210695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:18,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677690692] [2024-10-10 23:18:18,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:18,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:18,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:18,819 INFO L87 Difference]: Start difference. First operand 1888 states and 2354 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:19,412 INFO L93 Difference]: Finished difference Result 5074 states and 6325 transitions. [2024-10-10 23:18:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:19,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2024-10-10 23:18:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:19,420 INFO L225 Difference]: With dead ends: 5074 [2024-10-10 23:18:19,420 INFO L226 Difference]: Without dead ends: 3187 [2024-10-10 23:18:19,422 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 [2024-10-10 23:18:19,423 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 122 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:19,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 138 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2024-10-10 23:18:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3185. [2024-10-10 23:18:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.2160804020100502) internal successors, (3872), 3184 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3872 transitions. [2024-10-10 23:18:19,493 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3872 transitions. Word has length 273 [2024-10-10 23:18:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:19,494 INFO L471 AbstractCegarLoop]: Abstraction has 3185 states and 3872 transitions. [2024-10-10 23:18:19,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3872 transitions. [2024-10-10 23:18:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-10-10 23:18:19,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:19,497 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:18:19,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:18:19,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:19,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1543337151, now seen corresponding path program 1 times [2024-10-10 23:18:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866918465] [2024-10-10 23:18:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866918465] [2024-10-10 23:18:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866918465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284126592] [2024-10-10 23:18:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:19,796 INFO L87 Difference]: Start difference. First operand 3185 states and 3872 transitions. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:21,266 INFO L93 Difference]: Finished difference Result 10432 states and 12705 transitions. [2024-10-10 23:18:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 279 [2024-10-10 23:18:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:21,283 INFO L225 Difference]: With dead ends: 10432 [2024-10-10 23:18:21,283 INFO L226 Difference]: Without dead ends: 7248 [2024-10-10 23:18:21,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:21,288 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 213 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:21,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 148 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-10 23:18:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2024-10-10 23:18:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 7241. [2024-10-10 23:18:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 1.1959944751381215) internal successors, (8659), 7240 states have internal predecessors, (8659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 8659 transitions. [2024-10-10 23:18:21,378 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 8659 transitions. Word has length 279 [2024-10-10 23:18:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:21,378 INFO L471 AbstractCegarLoop]: Abstraction has 7241 states and 8659 transitions. [2024-10-10 23:18:21,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 8659 transitions. [2024-10-10 23:18:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-10-10 23:18:21,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:21,383 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:21,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:18:21,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:21,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 289625478, now seen corresponding path program 1 times [2024-10-10 23:18:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:21,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852985512] [2024-10-10 23:18:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 157 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852985512] [2024-10-10 23:18:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852985512] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333695473] [2024-10-10 23:18:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:22,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:22,062 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) [2024-10-10 23:18:22,063 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 [2024-10-10 23:18:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:22,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:22,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 23:18:22,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333695473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:22,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:22,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-10 23:18:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244496492] [2024-10-10 23:18:22,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:22,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:22,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:22,537 INFO L87 Difference]: Start difference. First operand 7241 states and 8659 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 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) [2024-10-10 23:18:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:23,413 INFO L93 Difference]: Finished difference Result 19469 states and 23083 transitions. [2024-10-10 23:18:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 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 282 [2024-10-10 23:18:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:23,454 INFO L225 Difference]: With dead ends: 19469 [2024-10-10 23:18:23,457 INFO L226 Difference]: Without dead ends: 12597 [2024-10-10 23:18:23,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:23,469 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:23,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 175 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:18:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12597 states. [2024-10-10 23:18:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12597 to 10009. [2024-10-10 23:18:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10009 states, 10008 states have (on average 1.181554756195044) internal successors, (11825), 10008 states have internal predecessors, (11825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10009 states to 10009 states and 11825 transitions. [2024-10-10 23:18:23,725 INFO L78 Accepts]: Start accepts. Automaton has 10009 states and 11825 transitions. Word has length 282 [2024-10-10 23:18:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:23,726 INFO L471 AbstractCegarLoop]: Abstraction has 10009 states and 11825 transitions. [2024-10-10 23:18:23,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 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) [2024-10-10 23:18:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10009 states and 11825 transitions. [2024-10-10 23:18:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-10-10 23:18:23,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:23,731 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:23,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:18:23,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:23,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:23,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1050505830, now seen corresponding path program 1 times [2024-10-10 23:18:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845018639] [2024-10-10 23:18:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-10 23:18:24,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:24,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845018639] [2024-10-10 23:18:24,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845018639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:24,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:24,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129771367] [2024-10-10 23:18:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:24,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:24,068 INFO L87 Difference]: Start difference. First operand 10009 states and 11825 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:24,806 INFO L93 Difference]: Finished difference Result 19647 states and 23261 transitions. [2024-10-10 23:18:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:24,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 294 [2024-10-10 23:18:24,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:24,820 INFO L225 Difference]: With dead ends: 19647 [2024-10-10 23:18:24,820 INFO L226 Difference]: Without dead ends: 10007 [2024-10-10 23:18:24,828 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 [2024-10-10 23:18:24,829 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 170 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:24,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 301 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2024-10-10 23:18:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 10007. [2024-10-10 23:18:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 10006 states have (on average 1.1505096941834898) internal successors, (11512), 10006 states have internal predecessors, (11512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 11512 transitions. [2024-10-10 23:18:25,013 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 11512 transitions. Word has length 294 [2024-10-10 23:18:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:25,013 INFO L471 AbstractCegarLoop]: Abstraction has 10007 states and 11512 transitions. [2024-10-10 23:18:25,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 11512 transitions. [2024-10-10 23:18:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-10-10 23:18:25,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:25,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:25,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:18:25,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:25,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash 198848853, now seen corresponding path program 1 times [2024-10-10 23:18:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:25,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567721256] [2024-10-10 23:18:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 125 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:25,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567721256] [2024-10-10 23:18:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567721256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290184986] [2024-10-10 23:18:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:25,420 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) [2024-10-10 23:18:25,422 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 [2024-10-10 23:18:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:25,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:25,821 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:25,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290184986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:25,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:25,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559238218] [2024-10-10 23:18:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:25,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:25,823 INFO L87 Difference]: Start difference. First operand 10007 states and 11512 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:26,429 INFO L93 Difference]: Finished difference Result 20953 states and 24250 transitions. [2024-10-10 23:18:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 297 [2024-10-10 23:18:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:26,447 INFO L225 Difference]: With dead ends: 20953 [2024-10-10 23:18:26,447 INFO L226 Difference]: Without dead ends: 11315 [2024-10-10 23:18:26,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:26,457 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 99 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:26,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 323 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11315 states. [2024-10-10 23:18:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11315 to 11306. [2024-10-10 23:18:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11306 states, 11305 states have (on average 1.151702786377709) internal successors, (13020), 11305 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11306 states to 11306 states and 13020 transitions. [2024-10-10 23:18:26,598 INFO L78 Accepts]: Start accepts. Automaton has 11306 states and 13020 transitions. Word has length 297 [2024-10-10 23:18:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:26,598 INFO L471 AbstractCegarLoop]: Abstraction has 11306 states and 13020 transitions. [2024-10-10 23:18:26,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11306 states and 13020 transitions. [2024-10-10 23:18:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-10-10 23:18:26,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:26,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:26,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:18:26,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:26,805 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:26,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 361647999, now seen corresponding path program 1 times [2024-10-10 23:18:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631924236] [2024-10-10 23:18:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631924236] [2024-10-10 23:18:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631924236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684863444] [2024-10-10 23:18:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:27,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:27,096 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) [2024-10-10 23:18:27,097 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 [2024-10-10 23:18:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:27,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:27,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:27,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684863444] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:29,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:18:29,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-10 23:18:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378362159] [2024-10-10 23:18:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:29,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:29,136 INFO L87 Difference]: Start difference. First operand 11306 states and 13020 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:30,191 INFO L93 Difference]: Finished difference Result 18342 states and 21258 transitions. [2024-10-10 23:18:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:30,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 302 [2024-10-10 23:18:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:30,217 INFO L225 Difference]: With dead ends: 18342 [2024-10-10 23:18:30,218 INFO L226 Difference]: Without dead ends: 18340 [2024-10-10 23:18:30,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:30,224 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 367 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:30,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 181 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 23:18:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18340 states. [2024-10-10 23:18:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18340 to 12778. [2024-10-10 23:18:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12778 states, 12777 states have (on average 1.1523831885419114) internal successors, (14724), 12777 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12778 states to 12778 states and 14724 transitions. [2024-10-10 23:18:30,409 INFO L78 Accepts]: Start accepts. Automaton has 12778 states and 14724 transitions. Word has length 302 [2024-10-10 23:18:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:30,410 INFO L471 AbstractCegarLoop]: Abstraction has 12778 states and 14724 transitions. [2024-10-10 23:18:30,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12778 states and 14724 transitions. [2024-10-10 23:18:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-10-10 23:18:30,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:30,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:30,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 23:18:30,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:30,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:30,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 455318777, now seen corresponding path program 1 times [2024-10-10 23:18:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:30,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170177132] [2024-10-10 23:18:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 55 proven. 70 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-10 23:18:30,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:30,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170177132] [2024-10-10 23:18:30,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170177132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:30,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956341097] [2024-10-10 23:18:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:30,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:30,931 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) [2024-10-10 23:18:30,932 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 [2024-10-10 23:18:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:31,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:18:31,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-10 23:18:31,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:31,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956341097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:31,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:31,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:31,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614379429] [2024-10-10 23:18:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:31,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:31,102 INFO L87 Difference]: Start difference. First operand 12778 states and 14724 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:31,905 INFO L93 Difference]: Finished difference Result 28130 states and 32516 transitions. [2024-10-10 23:18:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 326 [2024-10-10 23:18:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:31,925 INFO L225 Difference]: With dead ends: 28130 [2024-10-10 23:18:31,925 INFO L226 Difference]: Without dead ends: 15721 [2024-10-10 23:18:31,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:31,938 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 133 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:31,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 366 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15721 states. [2024-10-10 23:18:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15721 to 14617. [2024-10-10 23:18:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14617 states, 14616 states have (on average 1.1441570881226053) internal successors, (16723), 14616 states have internal predecessors, (16723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14617 states to 14617 states and 16723 transitions. [2024-10-10 23:18:32,119 INFO L78 Accepts]: Start accepts. Automaton has 14617 states and 16723 transitions. Word has length 326 [2024-10-10 23:18:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:32,120 INFO L471 AbstractCegarLoop]: Abstraction has 14617 states and 16723 transitions. [2024-10-10 23:18:32,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 14617 states and 16723 transitions. [2024-10-10 23:18:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-10 23:18:32,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:32,129 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:32,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 23:18:32,329 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,SelfDestructingSolverStorable12 [2024-10-10 23:18:32,330 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:32,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 397430061, now seen corresponding path program 1 times [2024-10-10 23:18:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771909735] [2024-10-10 23:18:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 281 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-10-10 23:18:33,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771909735] [2024-10-10 23:18:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771909735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138816876] [2024-10-10 23:18:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:33,027 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) [2024-10-10 23:18:33,028 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 [2024-10-10 23:18:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:33,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:18:33,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-10 23:18:33,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138816876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:33,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519033459] [2024-10-10 23:18:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:33,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:33,356 INFO L87 Difference]: Start difference. First operand 14617 states and 16723 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:33,917 INFO L93 Difference]: Finished difference Result 30530 states and 34951 transitions. [2024-10-10 23:18:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2024-10-10 23:18:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:33,941 INFO L225 Difference]: With dead ends: 30530 [2024-10-10 23:18:33,941 INFO L226 Difference]: Without dead ends: 16282 [2024-10-10 23:18:33,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:33,955 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 84 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:33,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 366 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16282 states. [2024-10-10 23:18:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16282 to 15359. [2024-10-10 23:18:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15359 states, 15358 states have (on average 1.14051308764162) internal successors, (17516), 15358 states have internal predecessors, (17516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 17516 transitions. [2024-10-10 23:18:34,112 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 17516 transitions. Word has length 351 [2024-10-10 23:18:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:34,112 INFO L471 AbstractCegarLoop]: Abstraction has 15359 states and 17516 transitions. [2024-10-10 23:18:34,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 17516 transitions. [2024-10-10 23:18:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-10 23:18:34,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:34,121 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:34,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 23:18:34,321 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,SelfDestructingSolverStorable13 [2024-10-10 23:18:34,322 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:34,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1701082308, now seen corresponding path program 1 times [2024-10-10 23:18:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718404433] [2024-10-10 23:18:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 208 proven. 168 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-10 23:18:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718404433] [2024-10-10 23:18:35,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718404433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633323878] [2024-10-10 23:18:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:35,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:35,095 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) [2024-10-10 23:18:35,096 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 [2024-10-10 23:18:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:35,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:18:35,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-10-10 23:18:35,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633323878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:35,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574967650] [2024-10-10 23:18:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:35,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:35,489 INFO L87 Difference]: Start difference. First operand 15359 states and 17516 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:36,016 INFO L93 Difference]: Finished difference Result 30719 states and 35027 transitions. [2024-10-10 23:18:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 372 [2024-10-10 23:18:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:36,035 INFO L225 Difference]: With dead ends: 30719 [2024-10-10 23:18:36,035 INFO L226 Difference]: Without dead ends: 15361 [2024-10-10 23:18:36,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:36,045 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 90 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:36,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 168 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15361 states. [2024-10-10 23:18:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15361 to 14255. [2024-10-10 23:18:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14255 states, 14254 states have (on average 1.134979654833731) internal successors, (16178), 14254 states have internal predecessors, (16178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14255 states to 14255 states and 16178 transitions. [2024-10-10 23:18:36,169 INFO L78 Accepts]: Start accepts. Automaton has 14255 states and 16178 transitions. Word has length 372 [2024-10-10 23:18:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:36,169 INFO L471 AbstractCegarLoop]: Abstraction has 14255 states and 16178 transitions. [2024-10-10 23:18:36,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 14255 states and 16178 transitions. [2024-10-10 23:18:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-10-10 23:18:36,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:36,179 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:18:36,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:36,380 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,SelfDestructingSolverStorable14 [2024-10-10 23:18:36,381 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:36,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1513559014, now seen corresponding path program 1 times [2024-10-10 23:18:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:36,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687710284] [2024-10-10 23:18:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 188 proven. 211 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:36,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687710284] [2024-10-10 23:18:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687710284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:36,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220404598] [2024-10-10 23:18:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:36,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:36,865 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) [2024-10-10 23:18:36,866 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 [2024-10-10 23:18:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:37,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:37,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:37,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:37,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220404598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:37,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:37,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395628001] [2024-10-10 23:18:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:37,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:37,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:37,329 INFO L87 Difference]: Start difference. First operand 14255 states and 16178 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:37,968 INFO L93 Difference]: Finished difference Result 31481 states and 35887 transitions. [2024-10-10 23:18:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:37,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 409 [2024-10-10 23:18:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:37,991 INFO L225 Difference]: With dead ends: 31481 [2024-10-10 23:18:37,991 INFO L226 Difference]: Without dead ends: 17595 [2024-10-10 23:18:38,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:38,003 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 105 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:38,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 303 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17595 states. [2024-10-10 23:18:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17595 to 17218. [2024-10-10 23:18:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17218 states, 17217 states have (on average 1.1388162862287274) internal successors, (19607), 17217 states have internal predecessors, (19607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17218 states to 17218 states and 19607 transitions. [2024-10-10 23:18:38,228 INFO L78 Accepts]: Start accepts. Automaton has 17218 states and 19607 transitions. Word has length 409 [2024-10-10 23:18:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:38,228 INFO L471 AbstractCegarLoop]: Abstraction has 17218 states and 19607 transitions. [2024-10-10 23:18:38,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17218 states and 19607 transitions. [2024-10-10 23:18:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-10-10 23:18:38,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:38,238 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:38,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:38,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:38,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:38,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:38,440 INFO L85 PathProgramCache]: Analyzing trace with hash 539875567, now seen corresponding path program 1 times [2024-10-10 23:18:38,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:38,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217411527] [2024-10-10 23:18:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:38,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 188 proven. 229 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-10 23:18:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217411527] [2024-10-10 23:18:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217411527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436604382] [2024-10-10 23:18:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:38,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:38,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:38,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 23:18:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:38,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 23:18:38,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 293 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:40,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 293 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436604382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:42,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-10-10 23:18:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369094727] [2024-10-10 23:18:42,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:42,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-10 23:18:42,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-10 23:18:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-10 23:18:42,484 INFO L87 Difference]: Start difference. First operand 17218 states and 19607 transitions. Second operand has 12 states, 12 states have (on average 83.16666666666667) internal successors, (998), 11 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:48,402 INFO L93 Difference]: Finished difference Result 47375 states and 53732 transitions. [2024-10-10 23:18:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-10 23:18:48,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 83.16666666666667) internal successors, (998), 11 states have internal predecessors, (998), 0 states have call successors, (0), 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 431 [2024-10-10 23:18:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:48,436 INFO L225 Difference]: With dead ends: 47375 [2024-10-10 23:18:48,436 INFO L226 Difference]: Without dead ends: 29974 [2024-10-10 23:18:48,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2024-10-10 23:18:48,449 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 3330 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 7071 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 8197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 7071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:48,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3330 Valid, 183 Invalid, 8197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 7071 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-10-10 23:18:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29974 states. [2024-10-10 23:18:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29974 to 18667. [2024-10-10 23:18:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18667 states, 18666 states have (on average 1.104682310082503) internal successors, (20620), 18666 states have internal predecessors, (20620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18667 states to 18667 states and 20620 transitions. [2024-10-10 23:18:48,673 INFO L78 Accepts]: Start accepts. Automaton has 18667 states and 20620 transitions. Word has length 431 [2024-10-10 23:18:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:48,674 INFO L471 AbstractCegarLoop]: Abstraction has 18667 states and 20620 transitions. [2024-10-10 23:18:48,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.16666666666667) internal successors, (998), 11 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 18667 states and 20620 transitions. [2024-10-10 23:18:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-10-10 23:18:48,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:48,684 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:48,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:48,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 23:18:48,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:48,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2006734777, now seen corresponding path program 1 times [2024-10-10 23:18:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664083857] [2024-10-10 23:18:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:48,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 525 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664083857] [2024-10-10 23:18:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664083857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888911331] [2024-10-10 23:18:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:49,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:49,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:49,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:49,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 23:18:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:49,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 23:18:49,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:50,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888911331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:50,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-10 23:18:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768072283] [2024-10-10 23:18:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:50,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:50,270 INFO L87 Difference]: Start difference. First operand 18667 states and 20620 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:50,862 INFO L93 Difference]: Finished difference Result 37336 states and 41263 transitions. [2024-10-10 23:18:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:50,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 447 [2024-10-10 23:18:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:50,882 INFO L225 Difference]: With dead ends: 37336 [2024-10-10 23:18:50,882 INFO L226 Difference]: Without dead ends: 19038 [2024-10-10 23:18:50,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:50,897 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:50,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 352 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19038 states. [2024-10-10 23:18:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19038 to 19035. [2024-10-10 23:18:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19035 states, 19034 states have (on average 1.1016076494693705) internal successors, (20968), 19034 states have internal predecessors, (20968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19035 states to 19035 states and 20968 transitions. [2024-10-10 23:18:51,084 INFO L78 Accepts]: Start accepts. Automaton has 19035 states and 20968 transitions. Word has length 447 [2024-10-10 23:18:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:51,085 INFO L471 AbstractCegarLoop]: Abstraction has 19035 states and 20968 transitions. [2024-10-10 23:18:51,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 19035 states and 20968 transitions. [2024-10-10 23:18:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-10-10 23:18:51,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:51,101 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:18:51,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:51,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 23:18:51,305 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:51,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1282619054, now seen corresponding path program 1 times [2024-10-10 23:18:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:51,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268907364] [2024-10-10 23:18:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 314 proven. 516 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-10-10 23:18:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:51,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268907364] [2024-10-10 23:18:51,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268907364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:51,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689592281] [2024-10-10 23:18:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:51,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:51,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:51,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:51,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 23:18:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:51,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:51,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 865 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-10-10 23:18:52,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689592281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:52,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108180436] [2024-10-10 23:18:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:52,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:52,015 INFO L87 Difference]: Start difference. First operand 19035 states and 20968 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:52,549 INFO L93 Difference]: Finished difference Result 42312 states and 46476 transitions. [2024-10-10 23:18:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:52,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 568 [2024-10-10 23:18:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:52,575 INFO L225 Difference]: With dead ends: 42312 [2024-10-10 23:18:52,575 INFO L226 Difference]: Without dead ends: 23646 [2024-10-10 23:18:52,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:52,589 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 106 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:52,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 331 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23646 states. [2024-10-10 23:18:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23646 to 19593. [2024-10-10 23:18:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19593 states, 19592 states have (on average 1.0984075132707227) internal successors, (21520), 19592 states have internal predecessors, (21520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19593 states to 19593 states and 21520 transitions. [2024-10-10 23:18:52,786 INFO L78 Accepts]: Start accepts. Automaton has 19593 states and 21520 transitions. Word has length 568 [2024-10-10 23:18:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:52,787 INFO L471 AbstractCegarLoop]: Abstraction has 19593 states and 21520 transitions. [2024-10-10 23:18:52,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19593 states and 21520 transitions. [2024-10-10 23:18:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-10-10 23:18:52,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:52,802 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:52,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 23:18:53,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:53,003 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:53,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash 300533606, now seen corresponding path program 1 times [2024-10-10 23:18:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014267502] [2024-10-10 23:18:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 251 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-10 23:18:53,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014267502] [2024-10-10 23:18:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014267502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656306402] [2024-10-10 23:18:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:53,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:53,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:53,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 23:18:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:53,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:18:53,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 286 proven. 469 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-10 23:18:54,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 251 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-10 23:18:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656306402] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:55,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-10 23:18:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120130527] [2024-10-10 23:18:55,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:55,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 23:18:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 23:18:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:55,628 INFO L87 Difference]: Start difference. First operand 19593 states and 21520 transitions. Second operand has 10 states, 10 states have (on average 84.9) internal successors, (849), 9 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:58,218 INFO L93 Difference]: Finished difference Result 58752 states and 64281 transitions. [2024-10-10 23:18:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 23:18:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 84.9) internal successors, (849), 9 states have internal predecessors, (849), 0 states have call successors, (0), 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 586 [2024-10-10 23:18:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:58,261 INFO L225 Difference]: With dead ends: 58752 [2024-10-10 23:18:58,261 INFO L226 Difference]: Without dead ends: 39528 [2024-10-10 23:18:58,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:58,278 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 642 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:58,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 138 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3605 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:18:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39528 states. [2024-10-10 23:18:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39528 to 29005. [2024-10-10 23:18:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29005 states, 29004 states have (on average 1.0950903323679493) internal successors, (31762), 29004 states have internal predecessors, (31762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29005 states to 29005 states and 31762 transitions. [2024-10-10 23:18:58,621 INFO L78 Accepts]: Start accepts. Automaton has 29005 states and 31762 transitions. Word has length 586 [2024-10-10 23:18:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:58,621 INFO L471 AbstractCegarLoop]: Abstraction has 29005 states and 31762 transitions. [2024-10-10 23:18:58,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.9) internal successors, (849), 9 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 29005 states and 31762 transitions. [2024-10-10 23:18:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-10-10 23:18:58,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:58,636 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:58,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 23:18:58,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:58,837 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:58,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1185122334, now seen corresponding path program 1 times [2024-10-10 23:18:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828568043] [2024-10-10 23:18:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-10-10 23:18:59,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:59,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828568043] [2024-10-10 23:18:59,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828568043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859527302] [2024-10-10 23:18:59,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:59,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:59,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:59,220 INFO L87 Difference]: Start difference. First operand 29005 states and 31762 transitions. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:00,288 INFO L93 Difference]: Finished difference Result 67986 states and 74357 transitions. [2024-10-10 23:19:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:19:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 600 [2024-10-10 23:19:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:00,327 INFO L225 Difference]: With dead ends: 67986 [2024-10-10 23:19:00,328 INFO L226 Difference]: Without dead ends: 38796 [2024-10-10 23:19:00,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:19:00,347 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 203 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:00,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 59 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:19:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38796 states. [2024-10-10 23:19:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38796 to 32499. [2024-10-10 23:19:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32499 states, 32498 states have (on average 1.0933288202350915) internal successors, (35531), 32498 states have internal predecessors, (35531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32499 states to 32499 states and 35531 transitions. [2024-10-10 23:19:00,703 INFO L78 Accepts]: Start accepts. Automaton has 32499 states and 35531 transitions. Word has length 600 [2024-10-10 23:19:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:00,703 INFO L471 AbstractCegarLoop]: Abstraction has 32499 states and 35531 transitions. [2024-10-10 23:19:00,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 32499 states and 35531 transitions. [2024-10-10 23:19:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-10-10 23:19:00,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:00,720 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:00,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-10 23:19:00,720 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:00,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash -153901556, now seen corresponding path program 1 times [2024-10-10 23:19:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739340353] [2024-10-10 23:19:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:00,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 829 proven. 301 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-10-10 23:19:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739340353] [2024-10-10 23:19:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739340353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14953265] [2024-10-10 23:19:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:01,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:01,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:01,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:01,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 23:19:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:02,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:19:02,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-10 23:19:02,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14953265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:02,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:02,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 23:19:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095997872] [2024-10-10 23:19:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:02,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:02,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:19:02,149 INFO L87 Difference]: Start difference. First operand 32499 states and 35531 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:02,846 INFO L93 Difference]: Finished difference Result 64820 states and 70878 transitions. [2024-10-10 23:19:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 626 [2024-10-10 23:19:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:02,882 INFO L225 Difference]: With dead ends: 64820 [2024-10-10 23:19:02,883 INFO L226 Difference]: Without dead ends: 32506 [2024-10-10 23:19:02,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:19:02,903 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:02,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 328 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:19:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32506 states. [2024-10-10 23:19:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32506 to 29187. [2024-10-10 23:19:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29187 states, 29186 states have (on average 1.0823339957513876) internal successors, (31589), 29186 states have internal predecessors, (31589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29187 states to 29187 states and 31589 transitions. [2024-10-10 23:19:03,189 INFO L78 Accepts]: Start accepts. Automaton has 29187 states and 31589 transitions. Word has length 626 [2024-10-10 23:19:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:03,190 INFO L471 AbstractCegarLoop]: Abstraction has 29187 states and 31589 transitions. [2024-10-10 23:19:03,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 29187 states and 31589 transitions. [2024-10-10 23:19:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-10-10 23:19:03,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:03,206 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:19:03,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-10 23:19:03,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:03,407 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:03,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2100855746, now seen corresponding path program 1 times [2024-10-10 23:19:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567561974] [2024-10-10 23:19:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:03,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 878 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-10-10 23:19:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567561974] [2024-10-10 23:19:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567561974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972811978] [2024-10-10 23:19:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:04,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:04,202 INFO L87 Difference]: Start difference. First operand 29187 states and 31589 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:04,985 INFO L93 Difference]: Finished difference Result 60963 states and 65954 transitions. [2024-10-10 23:19:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:04,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 642 [2024-10-10 23:19:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:05,022 INFO L225 Difference]: With dead ends: 60963 [2024-10-10 23:19:05,022 INFO L226 Difference]: Without dead ends: 33433 [2024-10-10 23:19:05,043 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 [2024-10-10 23:19:05,044 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 103 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:05,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 71 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:19:05,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33433 states. [2024-10-10 23:19:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33433 to 28432. [2024-10-10 23:19:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28432 states, 28431 states have (on average 1.079174140902536) internal successors, (30682), 28431 states have internal predecessors, (30682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28432 states to 28432 states and 30682 transitions. [2024-10-10 23:19:05,347 INFO L78 Accepts]: Start accepts. Automaton has 28432 states and 30682 transitions. Word has length 642 [2024-10-10 23:19:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:05,347 INFO L471 AbstractCegarLoop]: Abstraction has 28432 states and 30682 transitions. [2024-10-10 23:19:05,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28432 states and 30682 transitions. [2024-10-10 23:19:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-10 23:19:05,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:05,365 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:05,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 23:19:05,365 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:05,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -180236956, now seen corresponding path program 1 times [2024-10-10 23:19:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705517576] [2024-10-10 23:19:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 1099 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-10 23:19:05,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705517576] [2024-10-10 23:19:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705517576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756772370] [2024-10-10 23:19:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:05,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:05,791 INFO L87 Difference]: Start difference. First operand 28432 states and 30682 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:06,632 INFO L93 Difference]: Finished difference Result 57047 states and 61556 transitions. [2024-10-10 23:19:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 695 [2024-10-10 23:19:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:06,664 INFO L225 Difference]: With dead ends: 57047 [2024-10-10 23:19:06,664 INFO L226 Difference]: Without dead ends: 28614 [2024-10-10 23:19:06,682 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 [2024-10-10 23:19:06,683 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 65 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:06,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 287 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:19:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28614 states. [2024-10-10 23:19:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28614 to 27878. [2024-10-10 23:19:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27878 states, 27877 states have (on average 1.0697349069125086) internal successors, (29821), 27877 states have internal predecessors, (29821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27878 states to 27878 states and 29821 transitions. [2024-10-10 23:19:07,062 INFO L78 Accepts]: Start accepts. Automaton has 27878 states and 29821 transitions. Word has length 695 [2024-10-10 23:19:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:07,062 INFO L471 AbstractCegarLoop]: Abstraction has 27878 states and 29821 transitions. [2024-10-10 23:19:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 27878 states and 29821 transitions. [2024-10-10 23:19:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2024-10-10 23:19:07,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:07,079 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:19:07,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-10 23:19:07,079 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:07,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1643105125, now seen corresponding path program 1 times [2024-10-10 23:19:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:07,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58240451] [2024-10-10 23:19:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:07,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1324 proven. 77 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-10-10 23:19:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58240451] [2024-10-10 23:19:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58240451] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214305763] [2024-10-10 23:19:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:07,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:07,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:07,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 23:19:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:07,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:19:07,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1401 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-10-10 23:19:08,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:08,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214305763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:08,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:08,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:19:08,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340677936] [2024-10-10 23:19:08,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:08,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:08,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:08,027 INFO L87 Difference]: Start difference. First operand 27878 states and 29821 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:08,627 INFO L93 Difference]: Finished difference Result 55931 states and 59836 transitions. [2024-10-10 23:19:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:08,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 766 [2024-10-10 23:19:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:08,655 INFO L225 Difference]: With dead ends: 55931 [2024-10-10 23:19:08,655 INFO L226 Difference]: Without dead ends: 28422 [2024-10-10 23:19:08,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:08,671 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 58 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:08,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 123 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:19:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28422 states. [2024-10-10 23:19:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28422 to 24555. [2024-10-10 23:19:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24555 states, 24554 states have (on average 1.0634112568216991) internal successors, (26111), 24554 states have internal predecessors, (26111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24555 states to 24555 states and 26111 transitions. [2024-10-10 23:19:08,912 INFO L78 Accepts]: Start accepts. Automaton has 24555 states and 26111 transitions. Word has length 766 [2024-10-10 23:19:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:08,912 INFO L471 AbstractCegarLoop]: Abstraction has 24555 states and 26111 transitions. [2024-10-10 23:19:08,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 24555 states and 26111 transitions. [2024-10-10 23:19:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2024-10-10 23:19:08,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:08,931 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:08,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-10 23:19:09,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:09,132 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:09,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1907312099, now seen corresponding path program 1 times [2024-10-10 23:19:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415760952] [2024-10-10 23:19:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1995 backedges. 1325 proven. 64 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-10-10 23:19:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415760952] [2024-10-10 23:19:09,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415760952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220938964] [2024-10-10 23:19:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:09,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:09,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 23:19:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:10,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:19:10,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1995 backedges. 1196 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2024-10-10 23:19:10,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220938964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:19:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287001350] [2024-10-10 23:19:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:10,204 INFO L87 Difference]: Start difference. First operand 24555 states and 26111 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:10,878 INFO L93 Difference]: Finished difference Result 49671 states and 52811 transitions. [2024-10-10 23:19:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:10,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 775 [2024-10-10 23:19:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:10,909 INFO L225 Difference]: With dead ends: 49671 [2024-10-10 23:19:10,909 INFO L226 Difference]: Without dead ends: 26773 [2024-10-10 23:19:10,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:10,927 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:10,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 63 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:19:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26773 states. [2024-10-10 23:19:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26773 to 24555. [2024-10-10 23:19:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24555 states, 24554 states have (on average 1.0634112568216991) internal successors, (26111), 24554 states have internal predecessors, (26111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24555 states to 24555 states and 26111 transitions. [2024-10-10 23:19:11,317 INFO L78 Accepts]: Start accepts. Automaton has 24555 states and 26111 transitions. Word has length 775 [2024-10-10 23:19:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:11,318 INFO L471 AbstractCegarLoop]: Abstraction has 24555 states and 26111 transitions. [2024-10-10 23:19:11,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 24555 states and 26111 transitions. [2024-10-10 23:19:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2024-10-10 23:19:11,343 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:11,343 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:11,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:11,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-10 23:19:11,548 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:11,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1466315416, now seen corresponding path program 1 times [2024-10-10 23:19:11,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:11,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967118952] [2024-10-10 23:19:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1324 proven. 64 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-10-10 23:19:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967118952] [2024-10-10 23:19:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967118952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23909782] [2024-10-10 23:19:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:12,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:12,200 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:12,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-10 23:19:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:12,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:19:12,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1388 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-10-10 23:19:12,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23909782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:12,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:12,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:19:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151423282] [2024-10-10 23:19:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:12,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:12,513 INFO L87 Difference]: Start difference. First operand 24555 states and 26111 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:13,062 INFO L93 Difference]: Finished difference Result 48381 states and 51435 transitions. [2024-10-10 23:19:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:13,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 776 [2024-10-10 23:19:13,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:13,086 INFO L225 Difference]: With dead ends: 48381 [2024-10-10 23:19:13,087 INFO L226 Difference]: Without dead ends: 25483 [2024-10-10 23:19:13,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:19:13,103 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 75 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:13,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 318 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:19:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25483 states. [2024-10-10 23:19:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25483 to 22525. [2024-10-10 23:19:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22525 states, 22524 states have (on average 1.06344343811046) internal successors, (23953), 22524 states have internal predecessors, (23953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22525 states to 22525 states and 23953 transitions. [2024-10-10 23:19:13,422 INFO L78 Accepts]: Start accepts. Automaton has 22525 states and 23953 transitions. Word has length 776 [2024-10-10 23:19:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:13,422 INFO L471 AbstractCegarLoop]: Abstraction has 22525 states and 23953 transitions. [2024-10-10 23:19:13,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 22525 states and 23953 transitions. [2024-10-10 23:19:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2024-10-10 23:19:13,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:13,437 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:13,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:13,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-10 23:19:13,642 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:13,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:13,642 INFO L85 PathProgramCache]: Analyzing trace with hash -775165738, now seen corresponding path program 1 times [2024-10-10 23:19:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477998171] [2024-10-10 23:19:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:13,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2253 backedges. 1512 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2024-10-10 23:19:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:14,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477998171] [2024-10-10 23:19:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477998171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:14,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:14,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117031040] [2024-10-10 23:19:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:14,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:14,083 INFO L87 Difference]: Start difference. First operand 22525 states and 23953 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:14,674 INFO L93 Difference]: Finished difference Result 44870 states and 47651 transitions. [2024-10-10 23:19:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:14,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 801 [2024-10-10 23:19:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:14,698 INFO L225 Difference]: With dead ends: 44870 [2024-10-10 23:19:14,698 INFO L226 Difference]: Without dead ends: 24002 [2024-10-10 23:19:14,712 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 [2024-10-10 23:19:14,713 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 142 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:14,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 65 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:19:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24002 states. [2024-10-10 23:19:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24002 to 21051. [2024-10-10 23:19:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21051 states, 21050 states have (on average 1.0609026128266033) internal successors, (22332), 21050 states have internal predecessors, (22332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21051 states to 21051 states and 22332 transitions. [2024-10-10 23:19:14,923 INFO L78 Accepts]: Start accepts. Automaton has 21051 states and 22332 transitions. Word has length 801 [2024-10-10 23:19:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:14,923 INFO L471 AbstractCegarLoop]: Abstraction has 21051 states and 22332 transitions. [2024-10-10 23:19:14,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21051 states and 22332 transitions. [2024-10-10 23:19:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2024-10-10 23:19:14,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:14,937 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:14,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-10 23:19:14,937 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:14,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1582676063, now seen corresponding path program 1 times [2024-10-10 23:19:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891812335] [2024-10-10 23:19:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 1988 trivial. 0 not checked. [2024-10-10 23:19:15,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891812335] [2024-10-10 23:19:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891812335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:15,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715687821] [2024-10-10 23:19:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:15,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:15,433 INFO L87 Difference]: Start difference. First operand 21051 states and 22332 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:16,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:16,097 INFO L93 Difference]: Finished difference Result 43585 states and 46295 transitions. [2024-10-10 23:19:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:16,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 839 [2024-10-10 23:19:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:16,119 INFO L225 Difference]: With dead ends: 43585 [2024-10-10 23:19:16,119 INFO L226 Difference]: Without dead ends: 24191 [2024-10-10 23:19:16,132 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 [2024-10-10 23:19:16,132 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 145 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:16,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 286 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:19:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24191 states. [2024-10-10 23:19:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24191 to 21793. [2024-10-10 23:19:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21793 states, 21792 states have (on average 1.0601138032305433) internal successors, (23102), 21792 states have internal predecessors, (23102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21793 states to 21793 states and 23102 transitions. [2024-10-10 23:19:16,329 INFO L78 Accepts]: Start accepts. Automaton has 21793 states and 23102 transitions. Word has length 839 [2024-10-10 23:19:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:16,330 INFO L471 AbstractCegarLoop]: Abstraction has 21793 states and 23102 transitions. [2024-10-10 23:19:16,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21793 states and 23102 transitions. [2024-10-10 23:19:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2024-10-10 23:19:16,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:16,346 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:16,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-10 23:19:16,346 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:16,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -425428880, now seen corresponding path program 1 times [2024-10-10 23:19:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174292260] [2024-10-10 23:19:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 2367 proven. 271 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2024-10-10 23:19:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174292260] [2024-10-10 23:19:17,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174292260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831892962] [2024-10-10 23:19:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:17,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:17,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-10 23:19:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:17,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:19:17,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 2399 proven. 397 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2024-10-10 23:19:17,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:19:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 2367 proven. 271 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2024-10-10 23:19:19,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831892962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:19:19,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:19:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-10-10 23:19:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511655001] [2024-10-10 23:19:19,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:19:19,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 23:19:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 23:19:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:19:19,375 INFO L87 Difference]: Start difference. First operand 21793 states and 23102 transitions. Second operand has 10 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:21,962 INFO L93 Difference]: Finished difference Result 50419 states and 53349 transitions. [2024-10-10 23:19:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 23:19:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 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 1021 [2024-10-10 23:19:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:21,965 INFO L225 Difference]: With dead ends: 50419 [2024-10-10 23:19:21,965 INFO L226 Difference]: Without dead ends: 0 [2024-10-10 23:19:21,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2047 GetRequests, 2037 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:19:21,983 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1110 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 4117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:21,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 133 Invalid, 4117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:19:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-10 23:19:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-10 23:19:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-10 23:19:21,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1021 [2024-10-10 23:19:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:21,985 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-10 23:19:21,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-10 23:19:21,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-10 23:19:21,988 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-10 23:19:22,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:22,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:22,191 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:22,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.