./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/Problem03_label50.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/Problem03_label50.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 40dac47caceafe03bc0ffa25ad5f74a6ba08287baf5277ee6c97f2f17e5210aa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:39:10,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:39:10,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:39:10,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:39:10,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:39:10,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:39:10,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:39:10,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:39:10,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:39:10,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:39:10,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:39:10,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:39:10,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:39:10,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:39:10,152 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:39:10,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:39:10,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:39:10,153 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:39:10,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:39:10,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:39:10,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:39:10,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:39:10,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:39:10,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:39:10,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:39:10,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:39:10,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:39:10,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:39:10,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:39:10,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:39:10,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:39:10,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:39:10,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:39:10,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:39:10,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:39:10,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:39:10,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:39:10,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:39:10,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:39:10,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:39:10,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:39:10,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:39:10,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40dac47caceafe03bc0ffa25ad5f74a6ba08287baf5277ee6c97f2f17e5210aa [2024-10-10 22:39:10,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:39:10,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:39:10,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:39:10,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:39:10,456 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:39:10,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label50.c [2024-10-10 22:39:11,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:39:12,299 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:39:12,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label50.c [2024-10-10 22:39:12,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/648c3deac/f8895ea6fa9b46fcad8dd0a5b80012d4/FLAGf232de53a [2024-10-10 22:39:12,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/648c3deac/f8895ea6fa9b46fcad8dd0a5b80012d4 [2024-10-10 22:39:12,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:39:12,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:39:12,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:39:12,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:39:12,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:39:12,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:39:12" (1/1) ... [2024-10-10 22:39:12,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1428f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:12, skipping insertion in model container [2024-10-10 22:39:12,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:39:12" (1/1) ... [2024-10-10 22:39:12,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:39:12,909 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/Problem03_label50.c[55003,55016] [2024-10-10 22:39:12,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:39:12,970 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:39:13,152 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/Problem03_label50.c[55003,55016] [2024-10-10 22:39:13,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:39:13,194 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:39:13,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13 WrapperNode [2024-10-10 22:39:13,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:39:13,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:39:13,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:39:13,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:39:13,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,382 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-10 22:39:13,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:39:13,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:39:13,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:39:13,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:39:13,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,452 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 22:39:13,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:39:13,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:39:13,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:39:13,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:39:13,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (1/1) ... [2024-10-10 22:39:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:39:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:13,586 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 22:39:13,592 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 22:39:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:39:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:39:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:39:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:39:13,728 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:39:13,730 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:39:15,565 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-10 22:39:15,565 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:39:15,624 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:39:15,624 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 22:39:15,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:39:15 BoogieIcfgContainer [2024-10-10 22:39:15,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:39:15,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:39:15,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:39:15,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:39:15,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:39:12" (1/3) ... [2024-10-10 22:39:15,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad4537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:39:15, skipping insertion in model container [2024-10-10 22:39:15,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:13" (2/3) ... [2024-10-10 22:39:15,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad4537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:39:15, skipping insertion in model container [2024-10-10 22:39:15,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:39:15" (3/3) ... [2024-10-10 22:39:15,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2024-10-10 22:39:15,651 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:39:15,652 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:39:15,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:39:15,732 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;@7cda508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:39:15,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:39:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 22:39:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-10 22:39:15,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:15,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:15,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:15,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -745066813, now seen corresponding path program 1 times [2024-10-10 22:39:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114540775] [2024-10-10 22:39:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:16,323 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 22:39:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114540775] [2024-10-10 22:39:16,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114540775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:16,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:16,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285108143] [2024-10-10 22:39:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:16,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:39:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:39:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:39:16,363 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:16,416 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-10 22:39:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:39:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-10-10 22:39:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:16,440 INFO L225 Difference]: With dead ends: 479 [2024-10-10 22:39:16,441 INFO L226 Difference]: Without dead ends: 238 [2024-10-10 22:39:16,446 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 22:39:16,452 INFO L432 NwaCegarLoop]: 392 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, 392 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 22:39:16,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:39:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-10 22:39:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-10 22:39:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 22:39:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-10 22:39:16,516 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 153 [2024-10-10 22:39:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:16,517 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-10 22:39:16,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-10 22:39:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-10 22:39:16,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:16,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:16,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:39:16,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:16,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2016725607, now seen corresponding path program 1 times [2024-10-10 22:39:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816252511] [2024-10-10 22:39:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:16,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816252511] [2024-10-10 22:39:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816252511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317534830] [2024-10-10 22:39:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:17,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:17,095 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:18,051 INFO L93 Difference]: Finished difference Result 698 states and 1151 transitions. [2024-10-10 22:39:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:18,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-10-10 22:39:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:18,056 INFO L225 Difference]: With dead ends: 698 [2024-10-10 22:39:18,056 INFO L226 Difference]: Without dead ends: 461 [2024-10-10 22:39:18,057 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 22:39:18,059 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 102 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:18,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:39:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-10-10 22:39:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2024-10-10 22:39:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.539301310043668) internal successors, (705), 458 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 22:39:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 705 transitions. [2024-10-10 22:39:18,085 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 705 transitions. Word has length 153 [2024-10-10 22:39:18,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:18,086 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 705 transitions. [2024-10-10 22:39:18,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 705 transitions. [2024-10-10 22:39:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-10 22:39:18,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:18,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:39:18,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:18,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1019815354, now seen corresponding path program 1 times [2024-10-10 22:39:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:18,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357253197] [2024-10-10 22:39:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:18,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357253197] [2024-10-10 22:39:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357253197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961445598] [2024-10-10 22:39:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:18,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:18,442 INFO L87 Difference]: Start difference. First operand 459 states and 705 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:19,190 INFO L93 Difference]: Finished difference Result 1343 states and 2078 transitions. [2024-10-10 22:39:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:19,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-10 22:39:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:19,194 INFO L225 Difference]: With dead ends: 1343 [2024-10-10 22:39:19,194 INFO L226 Difference]: Without dead ends: 885 [2024-10-10 22:39:19,196 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 22:39:19,197 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:19,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-10 22:39:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 869. [2024-10-10 22:39:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.512672811059908) internal successors, (1313), 868 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states 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 22:39:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1313 transitions. [2024-10-10 22:39:19,264 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1313 transitions. Word has length 161 [2024-10-10 22:39:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:19,264 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1313 transitions. [2024-10-10 22:39:19,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1313 transitions. [2024-10-10 22:39:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-10 22:39:19,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:19,270 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:19,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:39:19,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:19,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2037482541, now seen corresponding path program 1 times [2024-10-10 22:39:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241437317] [2024-10-10 22:39:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241437317] [2024-10-10 22:39:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241437317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:19,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:19,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120053243] [2024-10-10 22:39:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:19,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:19,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:19,590 INFO L87 Difference]: Start difference. First operand 869 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:20,339 INFO L93 Difference]: Finished difference Result 2553 states and 3868 transitions. [2024-10-10 22:39:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-10-10 22:39:20,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:20,347 INFO L225 Difference]: With dead ends: 2553 [2024-10-10 22:39:20,347 INFO L226 Difference]: Without dead ends: 1685 [2024-10-10 22:39:20,349 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 22:39:20,350 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 232 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:20,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 414 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2024-10-10 22:39:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2024-10-10 22:39:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3365041617122473) internal successors, (2248), 1682 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 22:39:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2248 transitions. [2024-10-10 22:39:20,387 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2248 transitions. Word has length 173 [2024-10-10 22:39:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:20,388 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2248 transitions. [2024-10-10 22:39:20,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2248 transitions. [2024-10-10 22:39:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-10 22:39:20,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:20,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:20,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:39:20,393 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:20,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash 425358768, now seen corresponding path program 1 times [2024-10-10 22:39:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:20,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066017665] [2024-10-10 22:39:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066017665] [2024-10-10 22:39:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066017665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:20,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330247369] [2024-10-10 22:39:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:20,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:20,751 INFO L87 Difference]: Start difference. First operand 1683 states and 2248 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 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 22:39:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:21,500 INFO L93 Difference]: Finished difference Result 5016 states and 6706 transitions. [2024-10-10 22:39:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 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 22:39:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:21,513 INFO L225 Difference]: With dead ends: 5016 [2024-10-10 22:39:21,513 INFO L226 Difference]: Without dead ends: 3334 [2024-10-10 22:39:21,517 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 22:39:21,519 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:21,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 121 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2024-10-10 22:39:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3325. [2024-10-10 22:39:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.3231046931407942) internal successors, (4398), 3324 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states 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 22:39:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4398 transitions. [2024-10-10 22:39:21,638 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4398 transitions. Word has length 176 [2024-10-10 22:39:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:21,639 INFO L471 AbstractCegarLoop]: Abstraction has 3325 states and 4398 transitions. [2024-10-10 22:39:21,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 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 22:39:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4398 transitions. [2024-10-10 22:39:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-10 22:39:21,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:21,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:21,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 22:39:21,647 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:21,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1483047246, now seen corresponding path program 1 times [2024-10-10 22:39:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72594351] [2024-10-10 22:39:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72594351] [2024-10-10 22:39:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72594351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:21,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981974071] [2024-10-10 22:39:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:21,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:21,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:21,920 INFO L87 Difference]: Start difference. First operand 3325 states and 4398 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:39:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:22,710 INFO L93 Difference]: Finished difference Result 9927 states and 13144 transitions. [2024-10-10 22:39:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-10-10 22:39:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:22,736 INFO L225 Difference]: With dead ends: 9927 [2024-10-10 22:39:22,737 INFO L226 Difference]: Without dead ends: 6603 [2024-10-10 22:39:22,741 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 22:39:22,744 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:22,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 165 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2024-10-10 22:39:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 5767. [2024-10-10 22:39:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.3371488033298646) internal successors, (7710), 5766 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states 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 22:39:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7710 transitions. [2024-10-10 22:39:22,885 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7710 transitions. Word has length 179 [2024-10-10 22:39:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:22,886 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 7710 transitions. [2024-10-10 22:39:22,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:39:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7710 transitions. [2024-10-10 22:39:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-10 22:39:22,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:22,898 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:22,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:39:22,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:22,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -201600517, now seen corresponding path program 1 times [2024-10-10 22:39:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349091991] [2024-10-10 22:39:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349091991] [2024-10-10 22:39:23,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349091991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:23,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:23,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:23,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54724721] [2024-10-10 22:39:23,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:23,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:23,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:23,215 INFO L87 Difference]: Start difference. First operand 5767 states and 7710 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:39:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:24,122 INFO L93 Difference]: Finished difference Result 14590 states and 19419 transitions. [2024-10-10 22:39:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 188 [2024-10-10 22:39:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:24,152 INFO L225 Difference]: With dead ends: 14590 [2024-10-10 22:39:24,153 INFO L226 Difference]: Without dead ends: 8824 [2024-10-10 22:39:24,160 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 22:39:24,163 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:24,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2024-10-10 22:39:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 8820. [2024-10-10 22:39:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8820 states, 8819 states have (on average 1.2787164077559814) internal successors, (11277), 8819 states have internal predecessors, (11277), 0 states have call successors, (0), 0 states 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 22:39:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8820 states to 8820 states and 11277 transitions. [2024-10-10 22:39:24,315 INFO L78 Accepts]: Start accepts. Automaton has 8820 states and 11277 transitions. Word has length 188 [2024-10-10 22:39:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:24,316 INFO L471 AbstractCegarLoop]: Abstraction has 8820 states and 11277 transitions. [2024-10-10 22:39:24,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:39:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8820 states and 11277 transitions. [2024-10-10 22:39:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-10 22:39:24,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:24,329 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:24,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 22:39:24,329 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:24,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -980047303, now seen corresponding path program 1 times [2024-10-10 22:39:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029751680] [2024-10-10 22:39:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029751680] [2024-10-10 22:39:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029751680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269270908] [2024-10-10 22:39:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:24,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:24,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:24,805 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 22:39:24,806 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 22:39:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:24,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:25,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 22:39:25,269 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:25,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269270908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:25,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:25,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 22:39:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444158814] [2024-10-10 22:39:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:25,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:25,271 INFO L87 Difference]: Start difference. First operand 8820 states and 11277 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 22:39:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:26,148 INFO L93 Difference]: Finished difference Result 22146 states and 28842 transitions. [2024-10-10 22:39:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 190 [2024-10-10 22:39:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:26,187 INFO L225 Difference]: With dead ends: 22146 [2024-10-10 22:39:26,188 INFO L226 Difference]: Without dead ends: 13327 [2024-10-10 22:39:26,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:26,201 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 115 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:26,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 132 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2024-10-10 22:39:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 13315. [2024-10-10 22:39:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 1.2828601472134595) internal successors, (17080), 13314 states have internal predecessors, (17080), 0 states have call successors, (0), 0 states 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 22:39:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 17080 transitions. [2024-10-10 22:39:26,468 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 17080 transitions. Word has length 190 [2024-10-10 22:39:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:26,468 INFO L471 AbstractCegarLoop]: Abstraction has 13315 states and 17080 transitions. [2024-10-10 22:39:26,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 22:39:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 17080 transitions. [2024-10-10 22:39:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-10-10 22:39:26,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:26,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:26,508 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 22:39:26,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:26,690 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:26,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1381647772, now seen corresponding path program 1 times [2024-10-10 22:39:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154271891] [2024-10-10 22:39:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:27,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:27,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154271891] [2024-10-10 22:39:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154271891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:27,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229939043] [2024-10-10 22:39:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:27,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:27,156 INFO L87 Difference]: Start difference. First operand 13315 states and 17080 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:28,096 INFO L93 Difference]: Finished difference Result 31752 states and 40753 transitions. [2024-10-10 22:39:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-10-10 22:39:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:28,145 INFO L225 Difference]: With dead ends: 31752 [2024-10-10 22:39:28,146 INFO L226 Difference]: Without dead ends: 18438 [2024-10-10 22:39:28,163 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 22:39:28,166 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:28,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 173 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18438 states. [2024-10-10 22:39:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18438 to 18420. [2024-10-10 22:39:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18420 states, 18419 states have (on average 1.274770617297356) internal successors, (23480), 18419 states have internal predecessors, (23480), 0 states have call successors, (0), 0 states 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 22:39:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18420 states to 18420 states and 23480 transitions. [2024-10-10 22:39:28,432 INFO L78 Accepts]: Start accepts. Automaton has 18420 states and 23480 transitions. Word has length 194 [2024-10-10 22:39:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:28,433 INFO L471 AbstractCegarLoop]: Abstraction has 18420 states and 23480 transitions. [2024-10-10 22:39:28,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18420 states and 23480 transitions. [2024-10-10 22:39:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-10 22:39:28,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:28,497 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:28,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 22:39:28,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:28,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1452422571, now seen corresponding path program 1 times [2024-10-10 22:39:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721997247] [2024-10-10 22:39:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721997247] [2024-10-10 22:39:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721997247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998397757] [2024-10-10 22:39:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:29,055 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 22:39:29,057 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 22:39:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:29,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:39:29,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:29,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998397757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:29,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:29,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:29,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521811215] [2024-10-10 22:39:29,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:29,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:29,485 INFO L87 Difference]: Start difference. First operand 18420 states and 23480 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:30,336 INFO L93 Difference]: Finished difference Result 51057 states and 65283 transitions. [2024-10-10 22:39:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-10-10 22:39:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:30,405 INFO L225 Difference]: With dead ends: 51057 [2024-10-10 22:39:30,406 INFO L226 Difference]: Without dead ends: 33044 [2024-10-10 22:39:30,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:30,438 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 102 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:30,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 413 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33044 states. [2024-10-10 22:39:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33044 to 33043. [2024-10-10 22:39:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33043 states, 33042 states have (on average 1.228708915925186) internal successors, (40599), 33042 states have internal predecessors, (40599), 0 states have call successors, (0), 0 states 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 22:39:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33043 states to 33043 states and 40599 transitions. [2024-10-10 22:39:31,129 INFO L78 Accepts]: Start accepts. Automaton has 33043 states and 40599 transitions. Word has length 201 [2024-10-10 22:39:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:31,130 INFO L471 AbstractCegarLoop]: Abstraction has 33043 states and 40599 transitions. [2024-10-10 22:39:31,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 33043 states and 40599 transitions. [2024-10-10 22:39:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-10-10 22:39:31,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:31,175 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:31,195 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 22:39:31,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:31,377 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:31,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:31,378 INFO L85 PathProgramCache]: Analyzing trace with hash -907000983, now seen corresponding path program 1 times [2024-10-10 22:39:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505982432] [2024-10-10 22:39:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:31,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-10 22:39:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505982432] [2024-10-10 22:39:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505982432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301223509] [2024-10-10 22:39:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:31,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:31,928 INFO L87 Difference]: Start difference. First operand 33043 states and 40599 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 22:39:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:32,876 INFO L93 Difference]: Finished difference Result 72635 states and 89706 transitions. [2024-10-10 22:39:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 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 226 [2024-10-10 22:39:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:32,954 INFO L225 Difference]: With dead ends: 72635 [2024-10-10 22:39:32,954 INFO L226 Difference]: Without dead ends: 40608 [2024-10-10 22:39:32,984 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 22:39:32,985 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:32,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 200 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40608 states. [2024-10-10 22:39:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40608 to 40373. [2024-10-10 22:39:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40373 states, 40372 states have (on average 1.2373427127712275) internal successors, (49954), 40372 states have internal predecessors, (49954), 0 states have call successors, (0), 0 states 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 22:39:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40373 states to 40373 states and 49954 transitions. [2024-10-10 22:39:33,746 INFO L78 Accepts]: Start accepts. Automaton has 40373 states and 49954 transitions. Word has length 226 [2024-10-10 22:39:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:33,747 INFO L471 AbstractCegarLoop]: Abstraction has 40373 states and 49954 transitions. [2024-10-10 22:39:33,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 22:39:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 40373 states and 49954 transitions. [2024-10-10 22:39:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-10-10 22:39:33,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:33,929 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:33,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 22:39:33,929 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:33,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -365067476, now seen corresponding path program 1 times [2024-10-10 22:39:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62343814] [2024-10-10 22:39:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:39:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:34,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62343814] [2024-10-10 22:39:34,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62343814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906453035] [2024-10-10 22:39:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:34,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:34,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:34,560 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 22:39:34,562 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 22:39:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:34,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:39:34,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:34,821 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906453035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:34,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602323148] [2024-10-10 22:39:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:34,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:34,826 INFO L87 Difference]: Start difference. First operand 40373 states and 49954 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 22:39:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:35,627 INFO L93 Difference]: Finished difference Result 73202 states and 90378 transitions. [2024-10-10 22:39:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:35,627 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 231 [2024-10-10 22:39:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:35,684 INFO L225 Difference]: With dead ends: 73202 [2024-10-10 22:39:35,685 INFO L226 Difference]: Without dead ends: 34658 [2024-10-10 22:39:35,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:35,713 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 248 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:35,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 376 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:39:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34658 states. [2024-10-10 22:39:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34658 to 30388. [2024-10-10 22:39:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30388 states, 30387 states have (on average 1.1839602461578964) internal successors, (35977), 30387 states have internal predecessors, (35977), 0 states have call successors, (0), 0 states 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 22:39:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30388 states to 30388 states and 35977 transitions. [2024-10-10 22:39:36,321 INFO L78 Accepts]: Start accepts. Automaton has 30388 states and 35977 transitions. Word has length 231 [2024-10-10 22:39:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:36,322 INFO L471 AbstractCegarLoop]: Abstraction has 30388 states and 35977 transitions. [2024-10-10 22:39:36,322 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 22:39:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30388 states and 35977 transitions. [2024-10-10 22:39:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-10 22:39:36,349 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:36,349 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:36,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 22:39:36,550 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 22:39:36,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:36,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash 92837612, now seen corresponding path program 1 times [2024-10-10 22:39:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195149952] [2024-10-10 22:39:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-10 22:39:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195149952] [2024-10-10 22:39:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195149952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:37,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865291973] [2024-10-10 22:39:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:37,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:37,014 INFO L87 Difference]: Start difference. First operand 30388 states and 35977 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:39:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:37,937 INFO L93 Difference]: Finished difference Result 66275 states and 78313 transitions. [2024-10-10 22:39:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 241 [2024-10-10 22:39:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:37,996 INFO L225 Difference]: With dead ends: 66275 [2024-10-10 22:39:37,996 INFO L226 Difference]: Without dead ends: 37311 [2024-10-10 22:39:38,027 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 22:39:38,028 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:38,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 196 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37311 states. [2024-10-10 22:39:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37311 to 37290. [2024-10-10 22:39:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37290 states, 37289 states have (on average 1.169004263992062) internal successors, (43591), 37289 states have internal predecessors, (43591), 0 states have call successors, (0), 0 states 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 22:39:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37290 states to 37290 states and 43591 transitions. [2024-10-10 22:39:38,598 INFO L78 Accepts]: Start accepts. Automaton has 37290 states and 43591 transitions. Word has length 241 [2024-10-10 22:39:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:38,598 INFO L471 AbstractCegarLoop]: Abstraction has 37290 states and 43591 transitions. [2024-10-10 22:39:38,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:39:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 37290 states and 43591 transitions. [2024-10-10 22:39:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-10 22:39:38,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:38,633 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:38,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 22:39:38,634 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:38,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 638433478, now seen corresponding path program 1 times [2024-10-10 22:39:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168569864] [2024-10-10 22:39:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-10 22:39:38,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:38,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168569864] [2024-10-10 22:39:38,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168569864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:38,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:38,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40171765] [2024-10-10 22:39:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:38,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:38,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:38,782 INFO L87 Difference]: Start difference. First operand 37290 states and 43591 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:39,349 INFO L93 Difference]: Finished difference Result 67201 states and 78673 transitions. [2024-10-10 22:39:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:39,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-10-10 22:39:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:39,389 INFO L225 Difference]: With dead ends: 67201 [2024-10-10 22:39:39,389 INFO L226 Difference]: Without dead ends: 32756 [2024-10-10 22:39:39,415 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 22:39:39,416 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:39,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:39:39,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32756 states. [2024-10-10 22:39:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32756 to 32756. [2024-10-10 22:39:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32756 states, 32755 states have (on average 1.1462066860021372) internal successors, (37544), 32755 states have internal predecessors, (37544), 0 states have call successors, (0), 0 states 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 22:39:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32756 states to 32756 states and 37544 transitions. [2024-10-10 22:39:39,807 INFO L78 Accepts]: Start accepts. Automaton has 32756 states and 37544 transitions. Word has length 244 [2024-10-10 22:39:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:39,808 INFO L471 AbstractCegarLoop]: Abstraction has 32756 states and 37544 transitions. [2024-10-10 22:39:39,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 32756 states and 37544 transitions. [2024-10-10 22:39:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-10-10 22:39:39,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:39,838 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:39,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 22:39:39,838 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:39,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash 686350899, now seen corresponding path program 1 times [2024-10-10 22:39:39,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:39,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224840921] [2024-10-10 22:39:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:39,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 176 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-10 22:39:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224840921] [2024-10-10 22:39:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224840921] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275413476] [2024-10-10 22:39:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:40,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:40,530 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 22:39:40,531 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 22:39:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:40,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:40,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-10 22:39:40,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275413476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366723873] [2024-10-10 22:39:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:40,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:40,881 INFO L87 Difference]: Start difference. First operand 32756 states and 37544 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 22:39:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:41,654 INFO L93 Difference]: Finished difference Result 70384 states and 81307 transitions. [2024-10-10 22:39:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 306 [2024-10-10 22:39:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:41,695 INFO L225 Difference]: With dead ends: 70384 [2024-10-10 22:39:41,695 INFO L226 Difference]: Without dead ends: 39052 [2024-10-10 22:39:41,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:41,718 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 187 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:41,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 133 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:39:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39052 states. [2024-10-10 22:39:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39052 to 37019. [2024-10-10 22:39:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37019 states, 37018 states have (on average 1.1218596358528283) internal successors, (41529), 37018 states have internal predecessors, (41529), 0 states have call successors, (0), 0 states 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 22:39:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37019 states to 37019 states and 41529 transitions. [2024-10-10 22:39:42,274 INFO L78 Accepts]: Start accepts. Automaton has 37019 states and 41529 transitions. Word has length 306 [2024-10-10 22:39:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:42,275 INFO L471 AbstractCegarLoop]: Abstraction has 37019 states and 41529 transitions. [2024-10-10 22:39:42,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 22:39:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 37019 states and 41529 transitions. [2024-10-10 22:39:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-10-10 22:39:42,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:42,299 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:39:42,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:39:42,500 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,SelfDestructingSolverStorable14 [2024-10-10 22:39:42,500 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:42,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1835198284, now seen corresponding path program 1 times [2024-10-10 22:39:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226449133] [2024-10-10 22:39:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 22:39:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226449133] [2024-10-10 22:39:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226449133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:43,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362291528] [2024-10-10 22:39:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:43,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:43,063 INFO L87 Difference]: Start difference. First operand 37019 states and 41529 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 22:39:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:43,745 INFO L93 Difference]: Finished difference Result 78310 states and 87758 transitions. [2024-10-10 22:39:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 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 316 [2024-10-10 22:39:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:43,796 INFO L225 Difference]: With dead ends: 78310 [2024-10-10 22:39:43,796 INFO L226 Difference]: Without dead ends: 42918 [2024-10-10 22:39:43,822 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 22:39:43,822 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 96 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:43,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 157 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42918 states. [2024-10-10 22:39:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42918 to 42915. [2024-10-10 22:39:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42915 states, 42914 states have (on average 1.1160460455795311) internal successors, (47894), 42914 states have internal predecessors, (47894), 0 states have call successors, (0), 0 states 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 22:39:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42915 states to 42915 states and 47894 transitions. [2024-10-10 22:39:44,484 INFO L78 Accepts]: Start accepts. Automaton has 42915 states and 47894 transitions. Word has length 316 [2024-10-10 22:39:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:44,484 INFO L471 AbstractCegarLoop]: Abstraction has 42915 states and 47894 transitions. [2024-10-10 22:39:44,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 22:39:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42915 states and 47894 transitions. [2024-10-10 22:39:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-10 22:39:44,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:44,520 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:39:44,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-10 22:39:44,520 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:44,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash 143908507, now seen corresponding path program 2 times [2024-10-10 22:39:44,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:44,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839528912] [2024-10-10 22:39:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:44,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-10 22:39:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839528912] [2024-10-10 22:39:44,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839528912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:44,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:44,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725512194] [2024-10-10 22:39:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:44,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:44,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:44,775 INFO L87 Difference]: Start difference. First operand 42915 states and 47894 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 22:39:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:45,283 INFO L93 Difference]: Finished difference Result 122240 states and 136614 transitions. [2024-10-10 22:39:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:45,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 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 323 [2024-10-10 22:39:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:45,370 INFO L225 Difference]: With dead ends: 122240 [2024-10-10 22:39:45,370 INFO L226 Difference]: Without dead ends: 81967 [2024-10-10 22:39:45,403 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 22:39:45,404 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 220 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:45,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 739 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:39:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81967 states. [2024-10-10 22:39:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81967 to 81965. [2024-10-10 22:39:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81965 states, 81964 states have (on average 1.1173075984578595) internal successors, (91579), 81964 states have internal predecessors, (91579), 0 states have call successors, (0), 0 states 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 22:39:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81965 states to 81965 states and 91579 transitions. [2024-10-10 22:39:46,417 INFO L78 Accepts]: Start accepts. Automaton has 81965 states and 91579 transitions. Word has length 323 [2024-10-10 22:39:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:46,417 INFO L471 AbstractCegarLoop]: Abstraction has 81965 states and 91579 transitions. [2024-10-10 22:39:46,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 22:39:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 81965 states and 91579 transitions. [2024-10-10 22:39:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-10-10 22:39:46,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:46,467 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:46,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 22:39:46,467 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:46,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1057550810, now seen corresponding path program 1 times [2024-10-10 22:39:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898608735] [2024-10-10 22:39:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 212 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-10 22:39:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898608735] [2024-10-10 22:39:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898608735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139068260] [2024-10-10 22:39:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:47,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:47,309 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 22:39:47,310 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 22:39:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:47,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:47,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 22:39:47,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:47,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139068260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:47,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:47,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:47,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910104602] [2024-10-10 22:39:47,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:47,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:47,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:47,765 INFO L87 Difference]: Start difference. First operand 81965 states and 91579 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 22:39:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:48,701 INFO L93 Difference]: Finished difference Result 151743 states and 169815 transitions. [2024-10-10 22:39:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 336 [2024-10-10 22:39:48,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:48,795 INFO L225 Difference]: With dead ends: 151743 [2024-10-10 22:39:48,795 INFO L226 Difference]: Without dead ends: 72420 [2024-10-10 22:39:48,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:48,854 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 215 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:48,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 83 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2024-10-10 22:39:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 59218. [2024-10-10 22:39:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59218 states, 59217 states have (on average 1.108245942888022) internal successors, (65627), 59217 states have internal predecessors, (65627), 0 states have call successors, (0), 0 states 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 22:39:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59218 states to 59218 states and 65627 transitions. [2024-10-10 22:39:49,866 INFO L78 Accepts]: Start accepts. Automaton has 59218 states and 65627 transitions. Word has length 336 [2024-10-10 22:39:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:49,867 INFO L471 AbstractCegarLoop]: Abstraction has 59218 states and 65627 transitions. [2024-10-10 22:39:49,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 22:39:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 59218 states and 65627 transitions. [2024-10-10 22:39:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-10-10 22:39:49,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:49,916 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:49,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:39:50,116 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,SelfDestructingSolverStorable17 [2024-10-10 22:39:50,117 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:50,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash 897486018, now seen corresponding path program 1 times [2024-10-10 22:39:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:50,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81024655] [2024-10-10 22:39:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:50,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-10 22:39:50,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:50,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81024655] [2024-10-10 22:39:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81024655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:50,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746532443] [2024-10-10 22:39:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:50,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:50,306 INFO L87 Difference]: Start difference. First operand 59218 states and 65627 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:51,365 INFO L93 Difference]: Finished difference Result 104192 states and 114759 transitions. [2024-10-10 22:39:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2024-10-10 22:39:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:51,416 INFO L225 Difference]: With dead ends: 104192 [2024-10-10 22:39:51,416 INFO L226 Difference]: Without dead ends: 46804 [2024-10-10 22:39:51,448 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 22:39:51,448 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 218 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:51,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 326 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46804 states. [2024-10-10 22:39:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46804 to 46797. [2024-10-10 22:39:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46797 states, 46796 states have (on average 1.0886614240533379) internal successors, (50945), 46796 states have internal predecessors, (50945), 0 states have call successors, (0), 0 states 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 22:39:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46797 states to 46797 states and 50945 transitions. [2024-10-10 22:39:51,891 INFO L78 Accepts]: Start accepts. Automaton has 46797 states and 50945 transitions. Word has length 354 [2024-10-10 22:39:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:51,891 INFO L471 AbstractCegarLoop]: Abstraction has 46797 states and 50945 transitions. [2024-10-10 22:39:51,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 46797 states and 50945 transitions. [2024-10-10 22:39:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-10-10 22:39:51,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:51,922 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:39:51,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 22:39:51,923 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:51,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash -554242830, now seen corresponding path program 1 times [2024-10-10 22:39:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515884617] [2024-10-10 22:39:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-10 22:39:52,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515884617] [2024-10-10 22:39:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515884617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228876667] [2024-10-10 22:39:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:52,726 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 22:39:52,728 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 22:39:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:52,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:52,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-10 22:39:53,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228876667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:53,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362532618] [2024-10-10 22:39:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:53,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:53,048 INFO L87 Difference]: Start difference. First operand 46797 states and 50945 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 22:39:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:53,921 INFO L93 Difference]: Finished difference Result 93799 states and 102032 transitions. [2024-10-10 22:39:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:53,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 367 [2024-10-10 22:39:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:53,977 INFO L225 Difference]: With dead ends: 93799 [2024-10-10 22:39:53,978 INFO L226 Difference]: Without dead ends: 48832 [2024-10-10 22:39:54,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:54,012 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 134 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:54,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 45 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48832 states. [2024-10-10 22:39:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48832 to 46797. [2024-10-10 22:39:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46797 states, 46796 states have (on average 1.0881485597059577) internal successors, (50921), 46796 states have internal predecessors, (50921), 0 states have call successors, (0), 0 states 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 22:39:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46797 states to 46797 states and 50921 transitions. [2024-10-10 22:39:54,669 INFO L78 Accepts]: Start accepts. Automaton has 46797 states and 50921 transitions. Word has length 367 [2024-10-10 22:39:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:54,669 INFO L471 AbstractCegarLoop]: Abstraction has 46797 states and 50921 transitions. [2024-10-10 22:39:54,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 22:39:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 46797 states and 50921 transitions. [2024-10-10 22:39:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-10-10 22:39:54,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:54,713 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:54,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 22:39:54,913 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,SelfDestructingSolverStorable19 [2024-10-10 22:39:54,914 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:54,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 626237874, now seen corresponding path program 1 times [2024-10-10 22:39:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097806811] [2024-10-10 22:39:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 241 proven. 6 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-10 22:39:56,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:56,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097806811] [2024-10-10 22:39:56,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097806811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:56,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19116575] [2024-10-10 22:39:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:56,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:56,388 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 22:39:56,389 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 22:39:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:56,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:39:56,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-10 22:39:56,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:56,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19116575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:56,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 22:39:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837209051] [2024-10-10 22:39:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:56,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:39:56,809 INFO L87 Difference]: Start difference. First operand 46797 states and 50921 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:39:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:57,396 INFO L93 Difference]: Finished difference Result 120434 states and 130983 transitions. [2024-10-10 22:39:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:57,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 418 [2024-10-10 22:39:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:57,482 INFO L225 Difference]: With dead ends: 120434 [2024-10-10 22:39:57,482 INFO L226 Difference]: Without dead ends: 75467 [2024-10-10 22:39:57,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:39:57,521 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 181 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:57,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 789 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:39:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75467 states. [2024-10-10 22:39:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75467 to 75463. [2024-10-10 22:39:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75463 states, 75462 states have (on average 1.0785825978638255) internal successors, (81392), 75462 states have internal predecessors, (81392), 0 states have call successors, (0), 0 states 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 22:39:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75463 states to 75463 states and 81392 transitions. [2024-10-10 22:39:58,377 INFO L78 Accepts]: Start accepts. Automaton has 75463 states and 81392 transitions. Word has length 418 [2024-10-10 22:39:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:58,378 INFO L471 AbstractCegarLoop]: Abstraction has 75463 states and 81392 transitions. [2024-10-10 22:39:58,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:39:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 75463 states and 81392 transitions. [2024-10-10 22:39:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-10 22:39:58,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:58,432 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:58,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 22:39:58,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:58,633 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:58,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 941786408, now seen corresponding path program 1 times [2024-10-10 22:39:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805632953] [2024-10-10 22:39:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 373 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:40:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805632953] [2024-10-10 22:40:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805632953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763615699] [2024-10-10 22:40:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:00,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:00,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:00,837 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 22:40:00,839 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 22:40:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:01,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 22:40:01,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:40:01,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763615699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:01,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-10 22:40:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533019872] [2024-10-10 22:40:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:01,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:40:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:40:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:40:01,381 INFO L87 Difference]: Start difference. First operand 75463 states and 81392 transitions. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 22:40:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:02,776 INFO L93 Difference]: Finished difference Result 153800 states and 166004 transitions. [2024-10-10 22:40:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:40:02,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 420 [2024-10-10 22:40:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:02,881 INFO L225 Difference]: With dead ends: 153800 [2024-10-10 22:40:02,881 INFO L226 Difference]: Without dead ends: 80167 [2024-10-10 22:40:02,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:40:02,939 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 298 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:02,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 107 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:40:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80167 states. [2024-10-10 22:40:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80167 to 73027. [2024-10-10 22:40:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73027 states, 73026 states have (on average 1.0759455536384301) internal successors, (78572), 73026 states have internal predecessors, (78572), 0 states have call successors, (0), 0 states 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 22:40:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73027 states to 73027 states and 78572 transitions. [2024-10-10 22:40:03,895 INFO L78 Accepts]: Start accepts. Automaton has 73027 states and 78572 transitions. Word has length 420 [2024-10-10 22:40:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:03,896 INFO L471 AbstractCegarLoop]: Abstraction has 73027 states and 78572 transitions. [2024-10-10 22:40:03,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 22:40:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 73027 states and 78572 transitions. [2024-10-10 22:40:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-10-10 22:40:03,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:03,951 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:03,971 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 22:40:04,151 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,SelfDestructingSolverStorable21 [2024-10-10 22:40:04,152 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:04,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -312990400, now seen corresponding path program 1 times [2024-10-10 22:40:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379337393] [2024-10-10 22:40:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:04,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-10 22:40:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:04,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379337393] [2024-10-10 22:40:04,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379337393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:04,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:40:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:40:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260092044] [2024-10-10 22:40:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:04,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:40:04,828 INFO L87 Difference]: Start difference. First operand 73027 states and 78572 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 22:40:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:05,775 INFO L93 Difference]: Finished difference Result 183509 states and 197416 transitions. [2024-10-10 22:40:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:05,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 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 434 [2024-10-10 22:40:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:05,908 INFO L225 Difference]: With dead ends: 183509 [2024-10-10 22:40:05,908 INFO L226 Difference]: Without dead ends: 111906 [2024-10-10 22:40:05,965 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 22:40:05,965 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 119 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:05,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 141 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:40:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111906 states. [2024-10-10 22:40:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111906 to 108451. [2024-10-10 22:40:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108451 states, 108450 states have (on average 1.0764130935915168) internal successors, (116737), 108450 states have internal predecessors, (116737), 0 states have call successors, (0), 0 states 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 22:40:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108451 states to 108451 states and 116737 transitions. [2024-10-10 22:40:08,262 INFO L78 Accepts]: Start accepts. Automaton has 108451 states and 116737 transitions. Word has length 434 [2024-10-10 22:40:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:08,263 INFO L471 AbstractCegarLoop]: Abstraction has 108451 states and 116737 transitions. [2024-10-10 22:40:08,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 22:40:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 108451 states and 116737 transitions. [2024-10-10 22:40:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-10-10 22:40:08,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:08,318 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:08,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 22:40:08,318 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1361562801, now seen corresponding path program 1 times [2024-10-10 22:40:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080156296] [2024-10-10 22:40:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 278 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-10 22:40:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080156296] [2024-10-10 22:40:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080156296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97067657] [2024-10-10 22:40:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:09,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:09,933 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 22:40:09,934 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 22:40:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:10,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:40:10,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-10 22:40:10,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:10,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97067657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:10,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:10,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-10 22:40:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009407033] [2024-10-10 22:40:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:10,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:10,430 INFO L87 Difference]: Start difference. First operand 108451 states and 116737 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 22:40:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:11,189 INFO L93 Difference]: Finished difference Result 243122 states and 261863 transitions. [2024-10-10 22:40:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 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 441 [2024-10-10 22:40:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:11,354 INFO L225 Difference]: With dead ends: 243122 [2024-10-10 22:40:11,355 INFO L226 Difference]: Without dead ends: 136501 [2024-10-10 22:40:11,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:11,431 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 192 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:11,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 432 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:40:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136501 states. [2024-10-10 22:40:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136501 to 136497. [2024-10-10 22:40:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136497 states, 136496 states have (on average 1.077496776462314) internal successors, (147074), 136496 states have internal predecessors, (147074), 0 states have call successors, (0), 0 states 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 22:40:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136497 states to 136497 states and 147074 transitions. [2024-10-10 22:40:13,601 INFO L78 Accepts]: Start accepts. Automaton has 136497 states and 147074 transitions. Word has length 441 [2024-10-10 22:40:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:13,602 INFO L471 AbstractCegarLoop]: Abstraction has 136497 states and 147074 transitions. [2024-10-10 22:40:13,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 22:40:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 136497 states and 147074 transitions. [2024-10-10 22:40:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-10-10 22:40:13,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:13,732 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 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 22:40:13,746 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 22:40:13,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:13,933 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:13,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 243988903, now seen corresponding path program 1 times [2024-10-10 22:40:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:13,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019168038] [2024-10-10 22:40:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 498 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-10 22:40:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019168038] [2024-10-10 22:40:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019168038] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188414964] [2024-10-10 22:40:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:15,137 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 22:40:15,138 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 22:40:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:15,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:40:15,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-10 22:40:15,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188414964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:15,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:15,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-10 22:40:15,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538639279] [2024-10-10 22:40:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:15,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:15,542 INFO L87 Difference]: Start difference. First operand 136497 states and 147074 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 22:40:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:16,878 INFO L93 Difference]: Finished difference Result 376111 states and 405209 transitions. [2024-10-10 22:40:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 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 471 [2024-10-10 22:40:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:17,175 INFO L225 Difference]: With dead ends: 376111 [2024-10-10 22:40:17,175 INFO L226 Difference]: Without dead ends: 241444 [2024-10-10 22:40:17,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:17,279 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 198 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:17,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 527 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:40:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241444 states.