./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label12.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d17ef4c86a3b9aaad0f3756316af6b356203f50f5a16d9fd49cf45964daad71 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:07:16,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:07:16,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:07:16,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:07:16,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:07:16,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:07:16,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:07:16,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:07:16,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:07:16,977 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:07:16,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:07:16,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:07:16,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:07:16,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:07:16,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:07:16,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:07:16,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:07:16,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:07:16,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:07:16,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:07:16,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:07:16,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:07:16,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:07:16,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:07:16,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:07:16,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:07:16,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:07:16,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:07:16,990 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:07:16,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:07:16,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:07:16,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:07:16,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:16,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:07:16,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:07:16,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:07:16,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:07:16,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:07:16,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:07:16,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:07:16,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:07:16,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:07:16,997 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d17ef4c86a3b9aaad0f3756316af6b356203f50f5a16d9fd49cf45964daad71 [2024-11-16 03:07:17,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:07:17,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:07:17,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:07:17,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:07:17,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:07:17,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label12.c [2024-11-16 03:07:18,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:07:19,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:07:19,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label12.c [2024-11-16 03:07:19,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d2be1ac/a7641ea1d1374a978ba409a6ad8fcaf0/FLAGdfc4107c5 [2024-11-16 03:07:19,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d2be1ac/a7641ea1d1374a978ba409a6ad8fcaf0 [2024-11-16 03:07:19,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:07:19,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:07:19,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:19,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:07:19,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:07:19,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:19" (1/1) ... [2024-11-16 03:07:19,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f95d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:19, skipping insertion in model container [2024-11-16 03:07:19,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:19" (1/1) ... [2024-11-16 03:07:19,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:07:20,009 WARN L250 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_label12.c[56222,56235] [2024-11-16 03:07:20,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:20,063 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:07:20,227 WARN L250 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_label12.c[56222,56235] [2024-11-16 03:07:20,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:20,265 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:07:20,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20 WrapperNode [2024-11-16 03:07:20,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:20,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:20,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:07:20,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:07:20,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,409 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:07:20,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:20,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:07:20,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:07:20,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:07:20,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,441 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,483 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]. [2024-11-16 03:07:20,484 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:07:20,587 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:07:20,587 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:07:20,587 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:07:20,588 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (1/1) ... [2024-11-16 03:07:20,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:20,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:20,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:07:20,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:07:20,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:07:20,768 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:07:20,770 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:07:22,650 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:07:22,651 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:07:22,683 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:07:22,684 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:07:22,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:22 BoogieIcfgContainer [2024-11-16 03:07:22,685 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:07:22,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:07:22,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:07:22,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:07:22,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:07:19" (1/3) ... [2024-11-16 03:07:22,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71795ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:22, skipping insertion in model container [2024-11-16 03:07:22,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:20" (2/3) ... [2024-11-16 03:07:22,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71795ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:22, skipping insertion in model container [2024-11-16 03:07:22,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:22" (3/3) ... [2024-11-16 03:07:22,697 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label12.c [2024-11-16 03:07:22,718 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:07:22,718 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:07:22,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:07:22,808 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;@2c2897ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:07:22,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:07:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-16 03:07:22,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:22,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:22,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:22,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1832118875, now seen corresponding path program 1 times [2024-11-16 03:07:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514129282] [2024-11-16 03:07:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514129282] [2024-11-16 03:07:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514129282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:23,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943917296] [2024-11-16 03:07:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:23,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:23,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:23,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:23,859 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:24,995 INFO L93 Difference]: Finished difference Result 816 states and 1451 transitions. [2024-11-16 03:07:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:24,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-11-16 03:07:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:25,012 INFO L225 Difference]: With dead ends: 816 [2024-11-16 03:07:25,012 INFO L226 Difference]: Without dead ends: 447 [2024-11-16 03:07:25,016 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 [2024-11-16 03:07:25,020 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:25,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 235 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 03:07:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-16 03:07:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2024-11-16 03:07:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4260089686098654) internal successors, (636), 446 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 636 transitions. [2024-11-16 03:07:25,079 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 636 transitions. Word has length 165 [2024-11-16 03:07:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:25,080 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 636 transitions. [2024-11-16 03:07:25,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 636 transitions. [2024-11-16 03:07:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-16 03:07:25,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:25,084 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:25,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:07:25,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:25,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1455410593, now seen corresponding path program 1 times [2024-11-16 03:07:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366898650] [2024-11-16 03:07:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366898650] [2024-11-16 03:07:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366898650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567700627] [2024-11-16 03:07:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:25,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:25,367 INFO L87 Difference]: Start difference. First operand 447 states and 636 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:26,114 INFO L93 Difference]: Finished difference Result 1320 states and 1886 transitions. [2024-11-16 03:07:26,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-11-16 03:07:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:26,118 INFO L225 Difference]: With dead ends: 1320 [2024-11-16 03:07:26,118 INFO L226 Difference]: Without dead ends: 875 [2024-11-16 03:07:26,120 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 [2024-11-16 03:07:26,121 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 250 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:26,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 94 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-11-16 03:07:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 861. [2024-11-16 03:07:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.3930232558139535) internal successors, (1198), 860 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1198 transitions. [2024-11-16 03:07:26,158 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1198 transitions. Word has length 174 [2024-11-16 03:07:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:26,159 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1198 transitions. [2024-11-16 03:07:26,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1198 transitions. [2024-11-16 03:07:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 03:07:26,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:26,164 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:26,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:07:26,164 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:26,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 31845170, now seen corresponding path program 1 times [2024-11-16 03:07:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387206163] [2024-11-16 03:07:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387206163] [2024-11-16 03:07:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387206163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981115687] [2024-11-16 03:07:26,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:26,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:26,473 INFO L87 Difference]: Start difference. First operand 861 states and 1198 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:27,271 INFO L93 Difference]: Finished difference Result 2555 states and 3565 transitions. [2024-11-16 03:07:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2024-11-16 03:07:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:27,279 INFO L225 Difference]: With dead ends: 2555 [2024-11-16 03:07:27,279 INFO L226 Difference]: Without dead ends: 1696 [2024-11-16 03:07:27,281 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 [2024-11-16 03:07:27,282 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 81 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:27,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 370 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2024-11-16 03:07:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1682. [2024-11-16 03:07:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1681 states have (on average 1.3581201665675193) internal successors, (2283), 1681 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2283 transitions. [2024-11-16 03:07:27,321 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2283 transitions. Word has length 182 [2024-11-16 03:07:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:27,322 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2283 transitions. [2024-11-16 03:07:27,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2283 transitions. [2024-11-16 03:07:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-16 03:07:27,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:27,327 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:27,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:07:27,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:27,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash -889140211, now seen corresponding path program 1 times [2024-11-16 03:07:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:27,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045583628] [2024-11-16 03:07:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045583628] [2024-11-16 03:07:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045583628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:27,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:27,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882745153] [2024-11-16 03:07:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:27,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:27,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:27,553 INFO L87 Difference]: Start difference. First operand 1682 states and 2283 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) [2024-11-16 03:07:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:28,364 INFO L93 Difference]: Finished difference Result 5002 states and 6796 transitions. [2024-11-16 03:07:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:28,365 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 189 [2024-11-16 03:07:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:28,377 INFO L225 Difference]: With dead ends: 5002 [2024-11-16 03:07:28,377 INFO L226 Difference]: Without dead ends: 3322 [2024-11-16 03:07:28,380 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 [2024-11-16 03:07:28,385 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 257 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:28,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 363 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2024-11-16 03:07:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3317. [2024-11-16 03:07:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3316 states have (on average 1.307901085645356) internal successors, (4337), 3316 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4337 transitions. [2024-11-16 03:07:28,449 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4337 transitions. Word has length 189 [2024-11-16 03:07:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:28,449 INFO L471 AbstractCegarLoop]: Abstraction has 3317 states and 4337 transitions. [2024-11-16 03:07:28,450 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) [2024-11-16 03:07:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4337 transitions. [2024-11-16 03:07:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 03:07:28,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:28,455 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:28,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:07:28,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:28,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1410478256, now seen corresponding path program 1 times [2024-11-16 03:07:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844332881] [2024-11-16 03:07:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 03:07:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844332881] [2024-11-16 03:07:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844332881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:28,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806493385] [2024-11-16 03:07:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:28,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:28,773 INFO L87 Difference]: Start difference. First operand 3317 states and 4337 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:29,603 INFO L93 Difference]: Finished difference Result 8063 states and 10804 transitions. [2024-11-16 03:07:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-16 03:07:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:29,623 INFO L225 Difference]: With dead ends: 8063 [2024-11-16 03:07:29,623 INFO L226 Difference]: Without dead ends: 4748 [2024-11-16 03:07:29,629 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 [2024-11-16 03:07:29,632 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 237 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:29,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 411 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2024-11-16 03:07:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4746. [2024-11-16 03:07:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4746 states, 4745 states have (on average 1.2655426765015807) internal successors, (6005), 4745 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4746 states to 4746 states and 6005 transitions. [2024-11-16 03:07:29,792 INFO L78 Accepts]: Start accepts. Automaton has 4746 states and 6005 transitions. Word has length 196 [2024-11-16 03:07:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:29,793 INFO L471 AbstractCegarLoop]: Abstraction has 4746 states and 6005 transitions. [2024-11-16 03:07:29,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4746 states and 6005 transitions. [2024-11-16 03:07:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-16 03:07:29,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:29,802 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:29,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:07:29,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:29,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash -147401049, now seen corresponding path program 1 times [2024-11-16 03:07:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:29,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13215837] [2024-11-16 03:07:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 03:07:29,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13215837] [2024-11-16 03:07:29,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13215837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:29,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144106188] [2024-11-16 03:07:29,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:29,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:29,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:29,991 INFO L87 Difference]: Start difference. First operand 4746 states and 6005 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:30,434 INFO L93 Difference]: Finished difference Result 9263 states and 11757 transitions. [2024-11-16 03:07:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-16 03:07:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:30,453 INFO L225 Difference]: With dead ends: 9263 [2024-11-16 03:07:30,453 INFO L226 Difference]: Without dead ends: 4519 [2024-11-16 03:07:30,462 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 [2024-11-16 03:07:30,464 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:30,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:07:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2024-11-16 03:07:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4519. [2024-11-16 03:07:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 4518 states have (on average 1.2277556440903055) internal successors, (5547), 4518 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5547 transitions. [2024-11-16 03:07:30,649 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5547 transitions. Word has length 203 [2024-11-16 03:07:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:30,650 INFO L471 AbstractCegarLoop]: Abstraction has 4519 states and 5547 transitions. [2024-11-16 03:07:30,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5547 transitions. [2024-11-16 03:07:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-16 03:07:30,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:30,659 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:30,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:07:30,659 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:30,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1601362116, now seen corresponding path program 1 times [2024-11-16 03:07:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443261620] [2024-11-16 03:07:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:30,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:30,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443261620] [2024-11-16 03:07:30,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443261620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:30,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:30,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:30,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713299562] [2024-11-16 03:07:30,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:30,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:30,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:30,915 INFO L87 Difference]: Start difference. First operand 4519 states and 5547 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:31,737 INFO L93 Difference]: Finished difference Result 12922 states and 15796 transitions. [2024-11-16 03:07:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:31,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2024-11-16 03:07:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:31,767 INFO L225 Difference]: With dead ends: 12922 [2024-11-16 03:07:31,768 INFO L226 Difference]: Without dead ends: 8405 [2024-11-16 03:07:31,774 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 [2024-11-16 03:07:31,775 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 190 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:31,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 159 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8405 states. [2024-11-16 03:07:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8405 to 8400. [2024-11-16 03:07:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8400 states, 8399 states have (on average 1.1915704250506012) internal successors, (10008), 8399 states have internal predecessors, (10008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 10008 transitions. [2024-11-16 03:07:31,934 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 10008 transitions. Word has length 220 [2024-11-16 03:07:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:31,934 INFO L471 AbstractCegarLoop]: Abstraction has 8400 states and 10008 transitions. [2024-11-16 03:07:31,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 10008 transitions. [2024-11-16 03:07:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 03:07:31,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:31,947 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 03:07:31,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:07:31,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:31,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1816128340, now seen corresponding path program 1 times [2024-11-16 03:07:31,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763564045] [2024-11-16 03:07:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:07:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763564045] [2024-11-16 03:07:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763564045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:32,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298207503] [2024-11-16 03:07:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:32,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:32,259 INFO L87 Difference]: Start difference. First operand 8400 states and 10008 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:33,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:33,072 INFO L93 Difference]: Finished difference Result 20898 states and 24904 transitions. [2024-11-16 03:07:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 229 [2024-11-16 03:07:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:33,117 INFO L225 Difference]: With dead ends: 20898 [2024-11-16 03:07:33,118 INFO L226 Difference]: Without dead ends: 12500 [2024-11-16 03:07:33,131 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 [2024-11-16 03:07:33,132 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 208 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:33,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 74 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12500 states. [2024-11-16 03:07:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12500 to 12496. [2024-11-16 03:07:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12496 states, 12495 states have (on average 1.1893557422969188) internal successors, (14861), 12495 states have internal predecessors, (14861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12496 states to 12496 states and 14861 transitions. [2024-11-16 03:07:33,367 INFO L78 Accepts]: Start accepts. Automaton has 12496 states and 14861 transitions. Word has length 229 [2024-11-16 03:07:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:33,368 INFO L471 AbstractCegarLoop]: Abstraction has 12496 states and 14861 transitions. [2024-11-16 03:07:33,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12496 states and 14861 transitions. [2024-11-16 03:07:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-16 03:07:33,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:33,386 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 03:07:33,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:07:33,387 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:33,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1991147231, now seen corresponding path program 1 times [2024-11-16 03:07:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137857277] [2024-11-16 03:07:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:07:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137857277] [2024-11-16 03:07:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137857277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112753169] [2024-11-16 03:07:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:33,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:33,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:33,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:33,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:07:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:34,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:34,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 03:07:34,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112753169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:34,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:07:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345363039] [2024-11-16 03:07:34,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:34,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:34,509 INFO L87 Difference]: Start difference. First operand 12496 states and 14861 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:35,392 INFO L93 Difference]: Finished difference Result 35209 states and 41963 transitions. [2024-11-16 03:07:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:35,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 237 [2024-11-16 03:07:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:35,439 INFO L225 Difference]: With dead ends: 35209 [2024-11-16 03:07:35,440 INFO L226 Difference]: Without dead ends: 22715 [2024-11-16 03:07:35,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:35,461 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 85 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:35,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 156 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22715 states. [2024-11-16 03:07:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22715 to 22713. [2024-11-16 03:07:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22713 states, 22712 states have (on average 1.1702183867559) internal successors, (26578), 22712 states have internal predecessors, (26578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22713 states to 22713 states and 26578 transitions. [2024-11-16 03:07:35,886 INFO L78 Accepts]: Start accepts. Automaton has 22713 states and 26578 transitions. Word has length 237 [2024-11-16 03:07:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:35,887 INFO L471 AbstractCegarLoop]: Abstraction has 22713 states and 26578 transitions. [2024-11-16 03:07:35,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22713 states and 26578 transitions. [2024-11-16 03:07:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-16 03:07:35,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:35,916 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:35,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:07:36,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:36,117 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:36,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:36,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1194546959, now seen corresponding path program 1 times [2024-11-16 03:07:36,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:36,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458992905] [2024-11-16 03:07:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458992905] [2024-11-16 03:07:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458992905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:36,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:36,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714181746] [2024-11-16 03:07:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:36,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:07:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:07:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:36,403 INFO L87 Difference]: Start difference. First operand 22713 states and 26578 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:37,484 INFO L93 Difference]: Finished difference Result 68920 states and 80590 transitions. [2024-11-16 03:07:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:07:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 237 [2024-11-16 03:07:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:37,571 INFO L225 Difference]: With dead ends: 68920 [2024-11-16 03:07:37,572 INFO L226 Difference]: Without dead ends: 46207 [2024-11-16 03:07:37,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:37,604 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 561 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:37,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 437 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:07:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46207 states. [2024-11-16 03:07:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46207 to 46201. [2024-11-16 03:07:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46201 states, 46200 states have (on average 1.1526190476190477) internal successors, (53251), 46200 states have internal predecessors, (53251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46201 states to 46201 states and 53251 transitions. [2024-11-16 03:07:38,310 INFO L78 Accepts]: Start accepts. Automaton has 46201 states and 53251 transitions. Word has length 237 [2024-11-16 03:07:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:38,310 INFO L471 AbstractCegarLoop]: Abstraction has 46201 states and 53251 transitions. [2024-11-16 03:07:38,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 46201 states and 53251 transitions. [2024-11-16 03:07:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-16 03:07:38,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:38,346 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:38,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:07:38,346 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:38,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1088784316, now seen corresponding path program 1 times [2024-11-16 03:07:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:38,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637198993] [2024-11-16 03:07:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:07:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637198993] [2024-11-16 03:07:38,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637198993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:38,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:38,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:38,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983546697] [2024-11-16 03:07:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:38,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:38,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:38,900 INFO L87 Difference]: Start difference. First operand 46201 states and 53251 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:39,980 INFO L93 Difference]: Finished difference Result 117354 states and 135121 transitions. [2024-11-16 03:07:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 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 276 [2024-11-16 03:07:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:40,098 INFO L225 Difference]: With dead ends: 117354 [2024-11-16 03:07:40,098 INFO L226 Difference]: Without dead ends: 71155 [2024-11-16 03:07:40,152 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 [2024-11-16 03:07:40,153 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 160 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:40,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 157 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71155 states. [2024-11-16 03:07:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71155 to 71149. [2024-11-16 03:07:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71149 states, 71148 states have (on average 1.149547422274695) internal successors, (81788), 71148 states have internal predecessors, (81788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71149 states to 71149 states and 81788 transitions. [2024-11-16 03:07:41,506 INFO L78 Accepts]: Start accepts. Automaton has 71149 states and 81788 transitions. Word has length 276 [2024-11-16 03:07:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:41,507 INFO L471 AbstractCegarLoop]: Abstraction has 71149 states and 81788 transitions. [2024-11-16 03:07:41,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 71149 states and 81788 transitions. [2024-11-16 03:07:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-16 03:07:41,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:41,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:41,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:07:41,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:41,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2066674255, now seen corresponding path program 1 times [2024-11-16 03:07:41,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019480156] [2024-11-16 03:07:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:41,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:07:43,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019480156] [2024-11-16 03:07:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019480156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:43,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642199695] [2024-11-16 03:07:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:43,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:43,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:43,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:07:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:43,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:43,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 03:07:43,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642199695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:43,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-16 03:07:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761690801] [2024-11-16 03:07:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:43,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:43,584 INFO L87 Difference]: Start difference. First operand 71149 states and 81788 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:44,709 INFO L93 Difference]: Finished difference Result 141939 states and 163077 transitions. [2024-11-16 03:07:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 284 [2024-11-16 03:07:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:44,825 INFO L225 Difference]: With dead ends: 141939 [2024-11-16 03:07:44,825 INFO L226 Difference]: Without dead ends: 70792 [2024-11-16 03:07:44,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:44,851 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 155 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:44,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 161 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70792 states. [2024-11-16 03:07:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70792 to 70741. [2024-11-16 03:07:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70741 states, 70740 states have (on average 1.1445009895391576) internal successors, (80962), 70740 states have internal predecessors, (80962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70741 states to 70741 states and 80962 transitions. [2024-11-16 03:07:45,787 INFO L78 Accepts]: Start accepts. Automaton has 70741 states and 80962 transitions. Word has length 284 [2024-11-16 03:07:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:45,787 INFO L471 AbstractCegarLoop]: Abstraction has 70741 states and 80962 transitions. [2024-11-16 03:07:45,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 70741 states and 80962 transitions. [2024-11-16 03:07:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-16 03:07:46,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:46,071 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:46,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:07:46,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 03:07:46,273 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:46,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:46,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1923617453, now seen corresponding path program 1 times [2024-11-16 03:07:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:46,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652441515] [2024-11-16 03:07:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 03:07:46,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652441515] [2024-11-16 03:07:46,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652441515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:46,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:46,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654249238] [2024-11-16 03:07:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:46,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:07:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:07:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:46,821 INFO L87 Difference]: Start difference. First operand 70741 states and 80962 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:47,971 INFO L93 Difference]: Finished difference Result 141484 states and 161930 transitions. [2024-11-16 03:07:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:07:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 291 [2024-11-16 03:07:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:48,066 INFO L225 Difference]: With dead ends: 141484 [2024-11-16 03:07:48,066 INFO L226 Difference]: Without dead ends: 70745 [2024-11-16 03:07:48,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:48,127 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 445 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:48,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 67 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70745 states. [2024-11-16 03:07:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70745 to 70333. [2024-11-16 03:07:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70333 states, 70332 states have (on average 1.1355286356139453) internal successors, (79864), 70332 states have internal predecessors, (79864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70333 states to 70333 states and 79864 transitions. [2024-11-16 03:07:49,348 INFO L78 Accepts]: Start accepts. Automaton has 70333 states and 79864 transitions. Word has length 291 [2024-11-16 03:07:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:49,348 INFO L471 AbstractCegarLoop]: Abstraction has 70333 states and 79864 transitions. [2024-11-16 03:07:49,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 70333 states and 79864 transitions. [2024-11-16 03:07:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-16 03:07:49,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:49,378 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:49,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:07:49,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:49,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash -314954891, now seen corresponding path program 1 times [2024-11-16 03:07:49,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:49,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668208550] [2024-11-16 03:07:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:07:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:49,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668208550] [2024-11-16 03:07:49,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668208550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:49,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:49,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920717916] [2024-11-16 03:07:49,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:49,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:07:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:07:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:49,740 INFO L87 Difference]: Start difference. First operand 70333 states and 79864 transitions. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:50,988 INFO L93 Difference]: Finished difference Result 141935 states and 161280 transitions. [2024-11-16 03:07:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:07:50,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 304 [2024-11-16 03:07:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:51,071 INFO L225 Difference]: With dead ends: 141935 [2024-11-16 03:07:51,072 INFO L226 Difference]: Without dead ends: 71604 [2024-11-16 03:07:51,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:51,120 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 479 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:51,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 84 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:07:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71604 states. [2024-11-16 03:07:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71604 to 70741. [2024-11-16 03:07:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70741 states, 70740 states have (on average 1.1158891716143624) internal successors, (78938), 70740 states have internal predecessors, (78938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70741 states to 70741 states and 78938 transitions. [2024-11-16 03:07:52,216 INFO L78 Accepts]: Start accepts. Automaton has 70741 states and 78938 transitions. Word has length 304 [2024-11-16 03:07:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:52,216 INFO L471 AbstractCegarLoop]: Abstraction has 70741 states and 78938 transitions. [2024-11-16 03:07:52,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 70741 states and 78938 transitions. [2024-11-16 03:07:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-16 03:07:52,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:52,253 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:52,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 03:07:52,254 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:52,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -590649351, now seen corresponding path program 1 times [2024-11-16 03:07:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:52,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206683349] [2024-11-16 03:07:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 108 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-16 03:07:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206683349] [2024-11-16 03:07:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206683349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065760506] [2024-11-16 03:07:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:53,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:53,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:53,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:07:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:53,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:53,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 03:07:53,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065760506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:53,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:07:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310118795] [2024-11-16 03:07:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:53,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:53,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:53,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:53,419 INFO L87 Difference]: Start difference. First operand 70741 states and 78938 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:54,441 INFO L93 Difference]: Finished difference Result 140879 states and 157206 transitions. [2024-11-16 03:07:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 311 [2024-11-16 03:07:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:54,526 INFO L225 Difference]: With dead ends: 140879 [2024-11-16 03:07:54,526 INFO L226 Difference]: Without dead ends: 70140 [2024-11-16 03:07:54,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:54,546 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 100 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:54,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 294 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:07:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70140 states. [2024-11-16 03:07:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70140 to 70127. [2024-11-16 03:07:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70127 states, 70126 states have (on average 1.110073296637481) internal successors, (77845), 70126 states have internal predecessors, (77845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70127 states to 70127 states and 77845 transitions. [2024-11-16 03:07:55,517 INFO L78 Accepts]: Start accepts. Automaton has 70127 states and 77845 transitions. Word has length 311 [2024-11-16 03:07:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:55,518 INFO L471 AbstractCegarLoop]: Abstraction has 70127 states and 77845 transitions. [2024-11-16 03:07:55,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 70127 states and 77845 transitions. [2024-11-16 03:07:55,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-16 03:07:55,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:55,554 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:55,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:07:55,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:55,755 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:55,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -960677666, now seen corresponding path program 2 times [2024-11-16 03:07:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601395350] [2024-11-16 03:07:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-16 03:07:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601395350] [2024-11-16 03:07:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601395350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012177735] [2024-11-16 03:07:56,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 03:07:56,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:56,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:56,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:56,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:07:56,484 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 03:07:56,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 03:07:56,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:07:56,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 03:07:56,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:56,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012177735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:56,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:07:56,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414785519] [2024-11-16 03:07:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:56,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:56,551 INFO L87 Difference]: Start difference. First operand 70127 states and 77845 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 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) [2024-11-16 03:07:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:57,479 INFO L93 Difference]: Finished difference Result 135965 states and 150779 transitions. [2024-11-16 03:07:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:57,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 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 340 [2024-11-16 03:07:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:57,567 INFO L225 Difference]: With dead ends: 135965 [2024-11-16 03:07:57,567 INFO L226 Difference]: Without dead ends: 65840 [2024-11-16 03:07:57,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:57,623 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 220 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:57,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 312 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65840 states. [2024-11-16 03:07:58,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65840 to 53586. [2024-11-16 03:07:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53586 states, 53585 states have (on average 1.0972846878790707) internal successors, (58798), 53585 states have internal predecessors, (58798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53586 states to 53586 states and 58798 transitions. [2024-11-16 03:07:58,655 INFO L78 Accepts]: Start accepts. Automaton has 53586 states and 58798 transitions. Word has length 340 [2024-11-16 03:07:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:58,656 INFO L471 AbstractCegarLoop]: Abstraction has 53586 states and 58798 transitions. [2024-11-16 03:07:58,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 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) [2024-11-16 03:07:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 53586 states and 58798 transitions. [2024-11-16 03:07:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-16 03:07:58,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:58,675 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:58,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:07:58,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 03:07:58,876 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:58,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash -612845819, now seen corresponding path program 1 times [2024-11-16 03:07:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024998260] [2024-11-16 03:07:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024998260] [2024-11-16 03:07:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024998260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:59,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031626043] [2024-11-16 03:07:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:59,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:59,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:59,205 INFO L87 Difference]: Start difference. First operand 53586 states and 58798 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) [2024-11-16 03:08:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:00,219 INFO L93 Difference]: Finished difference Result 109851 states and 120665 transitions. [2024-11-16 03:08:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:08:00,220 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 340 [2024-11-16 03:08:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:00,306 INFO L225 Difference]: With dead ends: 109851 [2024-11-16 03:08:00,307 INFO L226 Difference]: Without dead ends: 56267 [2024-11-16 03:08:00,339 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 [2024-11-16 03:08:00,340 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 187 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:00,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 333 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:08:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56267 states. [2024-11-16 03:08:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56267 to 49914. [2024-11-16 03:08:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49914 states, 49913 states have (on average 1.098892072205638) internal successors, (54849), 49913 states have internal predecessors, (54849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49914 states to 49914 states and 54849 transitions. [2024-11-16 03:08:01,238 INFO L78 Accepts]: Start accepts. Automaton has 49914 states and 54849 transitions. Word has length 340 [2024-11-16 03:08:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:01,242 INFO L471 AbstractCegarLoop]: Abstraction has 49914 states and 54849 transitions. [2024-11-16 03:08:01,242 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) [2024-11-16 03:08:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 49914 states and 54849 transitions. [2024-11-16 03:08:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-16 03:08:01,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:01,278 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:01,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 03:08:01,278 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:01,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash 875721139, now seen corresponding path program 1 times [2024-11-16 03:08:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:01,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446633715] [2024-11-16 03:08:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:01,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-16 03:08:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446633715] [2024-11-16 03:08:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446633715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:08:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000764912] [2024-11-16 03:08:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:02,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:02,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:08:02,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:08:02,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:08:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:02,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:08:02,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:08:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 222 proven. 39 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 03:08:03,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:08:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 222 proven. 39 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 03:08:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000764912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:08:03,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:08:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-16 03:08:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032494178] [2024-11-16 03:08:03,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:08:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:08:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:08:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:08:03,312 INFO L87 Difference]: Start difference. First operand 49914 states and 54849 transitions. Second operand has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:05,316 INFO L93 Difference]: Finished difference Result 102904 states and 112823 transitions. [2024-11-16 03:08:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 03:08:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 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 349 [2024-11-16 03:08:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:05,381 INFO L225 Difference]: With dead ends: 102904 [2024-11-16 03:08:05,381 INFO L226 Difference]: Without dead ends: 52992 [2024-11-16 03:08:05,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:08:05,418 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 2142 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:05,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 141 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2113 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 03:08:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52992 states. [2024-11-16 03:08:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52992 to 47874. [2024-11-16 03:08:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47874 states, 47873 states have (on average 1.0947089173438054) internal successors, (52407), 47873 states have internal predecessors, (52407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47874 states to 47874 states and 52407 transitions. [2024-11-16 03:08:06,205 INFO L78 Accepts]: Start accepts. Automaton has 47874 states and 52407 transitions. Word has length 349 [2024-11-16 03:08:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:06,205 INFO L471 AbstractCegarLoop]: Abstraction has 47874 states and 52407 transitions. [2024-11-16 03:08:06,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 47874 states and 52407 transitions. [2024-11-16 03:08:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-16 03:08:06,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:06,227 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:06,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:08:06,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 03:08:06,428 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:06,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash -139936366, now seen corresponding path program 1 times [2024-11-16 03:08:06,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:06,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106475607] [2024-11-16 03:08:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 108 proven. 7 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-16 03:08:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106475607] [2024-11-16 03:08:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106475607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:08:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550980591] [2024-11-16 03:08:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:06,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:08:06,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:08:06,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:08:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:06,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:08:07,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:08:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-16 03:08:07,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:08:07,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550980591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:07,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:08:07,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:08:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509092773] [2024-11-16 03:08:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:07,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:08:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:08:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:07,106 INFO L87 Difference]: Start difference. First operand 47874 states and 52407 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:08,377 INFO L93 Difference]: Finished difference Result 131096 states and 143668 transitions. [2024-11-16 03:08:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:08:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 364 [2024-11-16 03:08:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:08,466 INFO L225 Difference]: With dead ends: 131096 [2024-11-16 03:08:08,466 INFO L226 Difference]: Without dead ends: 84244 [2024-11-16 03:08:08,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:08,504 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 537 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:08,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 316 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:08:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84244 states. [2024-11-16 03:08:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84244 to 77092. [2024-11-16 03:08:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77092 states, 77091 states have (on average 1.0973654512199869) internal successors, (84597), 77091 states have internal predecessors, (84597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77092 states to 77092 states and 84597 transitions. [2024-11-16 03:08:09,570 INFO L78 Accepts]: Start accepts. Automaton has 77092 states and 84597 transitions. Word has length 364 [2024-11-16 03:08:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:09,571 INFO L471 AbstractCegarLoop]: Abstraction has 77092 states and 84597 transitions. [2024-11-16 03:08:09,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 77092 states and 84597 transitions. [2024-11-16 03:08:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-16 03:08:09,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:09,596 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:09,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 03:08:09,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:09,797 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:09,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 47159772, now seen corresponding path program 1 times [2024-11-16 03:08:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:09,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134642216] [2024-11-16 03:08:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:08:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134642216] [2024-11-16 03:08:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134642216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:08:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:08:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359303816] [2024-11-16 03:08:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:10,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:08:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:08:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:08:10,162 INFO L87 Difference]: Start difference. First operand 77092 states and 84597 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:11,435 INFO L93 Difference]: Finished difference Result 147047 states and 161115 transitions. [2024-11-16 03:08:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:08:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 414 [2024-11-16 03:08:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:11,529 INFO L225 Difference]: With dead ends: 147047 [2024-11-16 03:08:11,529 INFO L226 Difference]: Without dead ends: 70977 [2024-11-16 03:08:11,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:08:11,581 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 271 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:11,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 63 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:08:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70977 states. [2024-11-16 03:08:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70977 to 60943. [2024-11-16 03:08:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60943 states, 60942 states have (on average 1.0936300088608841) internal successors, (66648), 60942 states have internal predecessors, (66648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60943 states to 60943 states and 66648 transitions. [2024-11-16 03:08:12,718 INFO L78 Accepts]: Start accepts. Automaton has 60943 states and 66648 transitions. Word has length 414 [2024-11-16 03:08:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:12,718 INFO L471 AbstractCegarLoop]: Abstraction has 60943 states and 66648 transitions. [2024-11-16 03:08:12,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 60943 states and 66648 transitions. [2024-11-16 03:08:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-16 03:08:12,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:12,737 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:12,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 03:08:12,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:12,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash 333226431, now seen corresponding path program 1 times [2024-11-16 03:08:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:12,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839031030] [2024-11-16 03:08:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-16 03:08:12,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:12,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839031030] [2024-11-16 03:08:12,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839031030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:12,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:08:12,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:08:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904198248] [2024-11-16 03:08:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:12,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:08:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:08:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:08:12,979 INFO L87 Difference]: Start difference. First operand 60943 states and 66648 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) [2024-11-16 03:08:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:13,910 INFO L93 Difference]: Finished difference Result 175057 states and 191426 transitions. [2024-11-16 03:08:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:08:13,911 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 415 [2024-11-16 03:08:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:14,060 INFO L225 Difference]: With dead ends: 175057 [2024-11-16 03:08:14,060 INFO L226 Difference]: Without dead ends: 114932 [2024-11-16 03:08:14,085 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 [2024-11-16 03:08:14,086 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 209 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:14,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 523 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:08:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114932 states. [2024-11-16 03:08:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114932 to 112271. [2024-11-16 03:08:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112271 states, 112270 states have (on average 1.0926605504587157) internal successors, (122673), 112270 states have internal predecessors, (122673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112271 states to 112271 states and 122673 transitions. [2024-11-16 03:08:15,590 INFO L78 Accepts]: Start accepts. Automaton has 112271 states and 122673 transitions. Word has length 415 [2024-11-16 03:08:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:15,591 INFO L471 AbstractCegarLoop]: Abstraction has 112271 states and 122673 transitions. [2024-11-16 03:08:15,591 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) [2024-11-16 03:08:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 112271 states and 122673 transitions. [2024-11-16 03:08:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-16 03:08:15,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:15,612 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:15,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 03:08:15,612 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:15,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 362034174, now seen corresponding path program 1 times [2024-11-16 03:08:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:15,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577915450] [2024-11-16 03:08:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 300 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-16 03:08:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577915450] [2024-11-16 03:08:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577915450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:08:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755259021] [2024-11-16 03:08:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:08:16,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:08:16,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 03:08:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:16,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:08:16,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:08:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-16 03:08:17,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:08:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755259021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:17,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:08:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:08:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163198183] [2024-11-16 03:08:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:17,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:08:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:08:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:17,052 INFO L87 Difference]: Start difference. First operand 112271 states and 122673 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:18,057 INFO L93 Difference]: Finished difference Result 226174 states and 246801 transitions. [2024-11-16 03:08:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:08:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 439 [2024-11-16 03:08:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:18,186 INFO L225 Difference]: With dead ends: 226174 [2024-11-16 03:08:18,186 INFO L226 Difference]: Without dead ends: 114721 [2024-11-16 03:08:18,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:18,223 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 242 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:18,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 778 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:08:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114721 states. [2024-11-16 03:08:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114721 to 110214. [2024-11-16 03:08:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110214 states, 110213 states have (on average 1.0823677787556822) internal successors, (119291), 110213 states have internal predecessors, (119291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110214 states to 110214 states and 119291 transitions. [2024-11-16 03:08:19,669 INFO L78 Accepts]: Start accepts. Automaton has 110214 states and 119291 transitions. Word has length 439 [2024-11-16 03:08:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:19,670 INFO L471 AbstractCegarLoop]: Abstraction has 110214 states and 119291 transitions. [2024-11-16 03:08:19,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110214 states and 119291 transitions. [2024-11-16 03:08:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-16 03:08:19,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:19,692 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:19,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 03:08:19,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:19,893 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:19,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 530722295, now seen corresponding path program 1 times [2024-11-16 03:08:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914702158] [2024-11-16 03:08:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:19,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 320 proven. 11 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-16 03:08:20,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914702158] [2024-11-16 03:08:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914702158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:08:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468195474] [2024-11-16 03:08:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:20,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:20,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:08:20,834 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:08:20,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 03:08:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:21,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:08:21,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:08:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-16 03:08:21,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:08:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468195474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:21,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:08:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:08:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867311844] [2024-11-16 03:08:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:21,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:08:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:08:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:21,146 INFO L87 Difference]: Start difference. First operand 110214 states and 119291 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:22,383 INFO L93 Difference]: Finished difference Result 216341 states and 233708 transitions. [2024-11-16 03:08:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:08:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 459 [2024-11-16 03:08:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:22,497 INFO L225 Difference]: With dead ends: 216341 [2024-11-16 03:08:22,497 INFO L226 Difference]: Without dead ends: 81033 [2024-11-16 03:08:22,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:08:22,572 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 205 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:22,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 103 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:08:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81033 states. [2024-11-16 03:08:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81033 to 55652. [2024-11-16 03:08:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55652 states, 55651 states have (on average 1.039801620815439) internal successors, (57866), 55651 states have internal predecessors, (57866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55652 states to 55652 states and 57866 transitions. [2024-11-16 03:08:23,411 INFO L78 Accepts]: Start accepts. Automaton has 55652 states and 57866 transitions. Word has length 459 [2024-11-16 03:08:23,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:23,411 INFO L471 AbstractCegarLoop]: Abstraction has 55652 states and 57866 transitions. [2024-11-16 03:08:23,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 55652 states and 57866 transitions. [2024-11-16 03:08:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-16 03:08:23,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:23,732 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:08:23,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 03:08:23,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 03:08:23,939 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:23,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1061758319, now seen corresponding path program 1 times [2024-11-16 03:08:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:23,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454701795] [2024-11-16 03:08:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 404 proven. 63 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-16 03:08:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454701795] [2024-11-16 03:08:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454701795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:08:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318789666] [2024-11-16 03:08:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:08:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:08:25,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:08:25,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 03:08:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:25,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 03:08:25,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:08:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-16 03:08:25,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:08:25,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318789666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:25,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:08:25,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-16 03:08:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5628856] [2024-11-16 03:08:25,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:25,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:08:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:08:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:08:25,647 INFO L87 Difference]: Start difference. First operand 55652 states and 57866 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:26,293 INFO L93 Difference]: Finished difference Result 115375 states and 120115 transitions. [2024-11-16 03:08:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:08:26,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 462 [2024-11-16 03:08:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:26,356 INFO L225 Difference]: With dead ends: 115375 [2024-11-16 03:08:26,356 INFO L226 Difference]: Without dead ends: 59725 [2024-11-16 03:08:26,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:08:26,390 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 150 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:26,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 318 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:08:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59725 states. [2024-11-16 03:08:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59725 to 54829. [2024-11-16 03:08:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54829 states, 54828 states have (on average 1.0397789450645656) internal successors, (57009), 54828 states have internal predecessors, (57009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54829 states to 54829 states and 57009 transitions. [2024-11-16 03:08:27,023 INFO L78 Accepts]: Start accepts. Automaton has 54829 states and 57009 transitions. Word has length 462 [2024-11-16 03:08:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:27,024 INFO L471 AbstractCegarLoop]: Abstraction has 54829 states and 57009 transitions. [2024-11-16 03:08:27,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 54829 states and 57009 transitions. [2024-11-16 03:08:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-16 03:08:27,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:27,036 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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] [2024-11-16 03:08:27,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 03:08:27,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-16 03:08:27,237 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:27,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash 785307699, now seen corresponding path program 1 times [2024-11-16 03:08:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833342308] [2024-11-16 03:08:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-16 03:08:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833342308] [2024-11-16 03:08:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833342308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:08:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:08:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104476190] [2024-11-16 03:08:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:27,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:08:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:08:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:08:27,977 INFO L87 Difference]: Start difference. First operand 54829 states and 57009 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:28,927 INFO L93 Difference]: Finished difference Result 112778 states and 117315 transitions. [2024-11-16 03:08:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:08:28,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 496 [2024-11-16 03:08:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:28,998 INFO L225 Difference]: With dead ends: 112778 [2024-11-16 03:08:28,998 INFO L226 Difference]: Without dead ends: 58359 [2024-11-16 03:08:29,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:08:29,032 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 296 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:29,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 87 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:08:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58359 states. [2024-11-16 03:08:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58359 to 54829. [2024-11-16 03:08:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54829 states, 54828 states have (on average 1.039614795360035) internal successors, (57000), 54828 states have internal predecessors, (57000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54829 states to 54829 states and 57000 transitions. [2024-11-16 03:08:29,800 INFO L78 Accepts]: Start accepts. Automaton has 54829 states and 57000 transitions. Word has length 496 [2024-11-16 03:08:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:29,800 INFO L471 AbstractCegarLoop]: Abstraction has 54829 states and 57000 transitions. [2024-11-16 03:08:29,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 54829 states and 57000 transitions. [2024-11-16 03:08:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2024-11-16 03:08:29,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:29,818 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-16 03:08:29,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-16 03:08:29,819 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:29,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1831107022, now seen corresponding path program 1 times [2024-11-16 03:08:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140609892] [2024-11-16 03:08:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:29,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat