./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pr5.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/array-tiling/pr5.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 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:34:01,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:34:01,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:34:01,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:34:01,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:34:01,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:34:01,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:34:01,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:34:01,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:34:01,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:34:01,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:34:01,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:34:01,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:34:01,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:34:01,296 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:34:01,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:34:01,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:34:01,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:34:01,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:34:01,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:34:01,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:34:01,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:34:01,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:34:01,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:34:01,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:34:01,304 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:34:01,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:34:01,304 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:34:01,304 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:34:01,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:34:01,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:34:01,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:34:01,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:34:01,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:34:01,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:34:01,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:34:01,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:34:01,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:34:01,308 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:34:01,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:34:01,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:34:01,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:34:01,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a [2024-11-16 02:34:01,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:34:01,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:34:01,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:34:01,594 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:34:01,594 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:34:01,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr5.c [2024-11-16 02:34:03,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:34:03,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:34:03,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr5.c [2024-11-16 02:34:03,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0310b18/3d098e3688e747d49081629184cc0a00/FLAG3e49f6426 [2024-11-16 02:34:03,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0310b18/3d098e3688e747d49081629184cc0a00 [2024-11-16 02:34:03,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:34:03,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:34:03,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:34:03,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:34:03,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:34:03,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b421f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03, skipping insertion in model container [2024-11-16 02:34:03,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,316 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:34:03,484 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/array-tiling/pr5.c[394,407] [2024-11-16 02:34:03,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:34:03,521 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:34:03,535 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/array-tiling/pr5.c[394,407] [2024-11-16 02:34:03,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:34:03,563 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:34:03,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03 WrapperNode [2024-11-16 02:34:03,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:34:03,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:34:03,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:34:03,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:34:03,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,613 INFO L138 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-16 02:34:03,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:34:03,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:34:03,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:34:03,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:34:03,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,639 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 6, 12]. 60 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 10 writes are split as follows [0, 0, 10]. [2024-11-16 02:34:03,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,645 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:34:03,650 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:34:03,651 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:34:03,651 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:34:03,652 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (1/1) ... [2024-11-16 02:34:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:34:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:03,692 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 02:34:03,701 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 02:34:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:34:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:34:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:34:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:34:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:34:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:34:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:34:03,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:34:03,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:34:03,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:34:03,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:34:03,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:34:03,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:34:03,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:34:03,845 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:34:03,847 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:34:04,037 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:34:04,038 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:34:04,050 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:34:04,051 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:34:04,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:34:04 BoogieIcfgContainer [2024-11-16 02:34:04,051 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:34:04,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:34:04,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:34:04,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:34:04,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:34:03" (1/3) ... [2024-11-16 02:34:04,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e782ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:34:04, skipping insertion in model container [2024-11-16 02:34:04,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:34:03" (2/3) ... [2024-11-16 02:34:04,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e782ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:34:04, skipping insertion in model container [2024-11-16 02:34:04,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:34:04" (3/3) ... [2024-11-16 02:34:04,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pr5.c [2024-11-16 02:34:04,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:34:04,077 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:34:04,134 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:34:04,139 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;@1368adfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:34:04,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:34:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:34:04,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:04,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:04,149 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:04,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:04,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1480963675, now seen corresponding path program 1 times [2024-11-16 02:34:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897436615] [2024-11-16 02:34:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:04,351 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 02:34:04,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897436615] [2024-11-16 02:34:04,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897436615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:04,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:04,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:34:04,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710282260] [2024-11-16 02:34:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:04,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:34:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:34:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:34:04,378 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 02:34:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:04,390 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-16 02:34:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:34:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-16 02:34:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:04,398 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:34:04,399 INFO L226 Difference]: Without dead ends: 24 [2024-11-16 02:34:04,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:34:04,404 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:04,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-16 02:34:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-16 02:34:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 02:34:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-16 02:34:04,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 15 [2024-11-16 02:34:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:04,435 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-16 02:34:04,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 02:34:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-16 02:34:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:34:04,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:04,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:04,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:34:04,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:04,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1001500271, now seen corresponding path program 1 times [2024-11-16 02:34:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953910880] [2024-11-16 02:34:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:04,871 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 02:34:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953910880] [2024-11-16 02:34:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953910880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:34:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070706871] [2024-11-16 02:34:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:04,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:34:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:34:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:04,881 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 02:34:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:04,978 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-16 02:34:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:34:04,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-16 02:34:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:04,979 INFO L225 Difference]: With dead ends: 42 [2024-11-16 02:34:04,979 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:34:04,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:04,982 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:04,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:34:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:34:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2024-11-16 02:34:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 02:34:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-16 02:34:04,996 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 16 [2024-11-16 02:34:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:04,997 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-16 02:34:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 02:34:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-16 02:34:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:34:04,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:04,998 INFO L215 NwaCegarLoop]: trace histogram [2, 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 02:34:04,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:34:04,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:05,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2029625269, now seen corresponding path program 1 times [2024-11-16 02:34:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876289287] [2024-11-16 02:34:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:05,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:05,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876289287] [2024-11-16 02:34:05,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876289287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:05,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589254779] [2024-11-16 02:34:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:05,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:05,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:05,859 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 02:34:05,860 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 02:34:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:05,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 02:34:05,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:06,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:06,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:06,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:06,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:06,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:34:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589254779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:06,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2024-11-16 02:34:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213224058] [2024-11-16 02:34:06,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:06,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:34:06,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:34:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:34:06,439 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 02:34:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:07,177 INFO L93 Difference]: Finished difference Result 142 states and 189 transitions. [2024-11-16 02:34:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:34:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 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 24 [2024-11-16 02:34:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:07,182 INFO L225 Difference]: With dead ends: 142 [2024-11-16 02:34:07,182 INFO L226 Difference]: Without dead ends: 124 [2024-11-16 02:34:07,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:34:07,185 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 326 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:07,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 194 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:34:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-16 02:34:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 51. [2024-11-16 02:34:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.46) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:34:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2024-11-16 02:34:07,202 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 24 [2024-11-16 02:34:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:07,202 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2024-11-16 02:34:07,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 02:34:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2024-11-16 02:34:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:34:07,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:07,204 INFO L215 NwaCegarLoop]: trace histogram [2, 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 02:34:07,222 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 02:34:07,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:07,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:07,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2028701748, now seen corresponding path program 1 times [2024-11-16 02:34:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:07,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110088765] [2024-11-16 02:34:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:34:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110088765] [2024-11-16 02:34:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110088765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:07,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863500648] [2024-11-16 02:34:07,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:07,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:07,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:07,475 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:34:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:07,498 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2024-11-16 02:34:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:07,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 24 [2024-11-16 02:34:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:07,500 INFO L225 Difference]: With dead ends: 56 [2024-11-16 02:34:07,502 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 02:34:07,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:07,504 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:07,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 02:34:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 02:34:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 02:34:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2024-11-16 02:34:07,518 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 24 [2024-11-16 02:34:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:07,519 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2024-11-16 02:34:07,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:34:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2024-11-16 02:34:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:34:07,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:07,521 INFO L215 NwaCegarLoop]: trace histogram [2, 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 02:34:07,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:34:07,521 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:07,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1754807850, now seen corresponding path program 1 times [2024-11-16 02:34:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:07,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061577806] [2024-11-16 02:34:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:07,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061577806] [2024-11-16 02:34:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061577806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861870123] [2024-11-16 02:34:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:07,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:07,597 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 02:34:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:07,640 INFO L93 Difference]: Finished difference Result 84 states and 114 transitions. [2024-11-16 02:34:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-16 02:34:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:07,643 INFO L225 Difference]: With dead ends: 84 [2024-11-16 02:34:07,644 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 02:34:07,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:07,646 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 46 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:07,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 02:34:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2024-11-16 02:34:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:34:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-11-16 02:34:07,657 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 24 [2024-11-16 02:34:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:07,657 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-11-16 02:34:07,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 02:34:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-11-16 02:34:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:34:07,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:07,659 INFO L215 NwaCegarLoop]: trace histogram [2, 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 02:34:07,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:34:07,659 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:07,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1883890569, now seen corresponding path program 1 times [2024-11-16 02:34:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420770751] [2024-11-16 02:34:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420770751] [2024-11-16 02:34:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420770751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160748598] [2024-11-16 02:34:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:08,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:08,055 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 02:34:08,056 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 02:34:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:08,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 02:34:08,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:08,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:08,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:08,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:08,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:08,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:08,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:08,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-16 02:34:08,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-16 02:34:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160748598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:08,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 17 [2024-11-16 02:34:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964040785] [2024-11-16 02:34:08,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:08,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:34:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:34:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:34:08,452 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:09,034 INFO L93 Difference]: Finished difference Result 111 states and 146 transitions. [2024-11-16 02:34:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 02:34:09,034 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 02:34:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:09,035 INFO L225 Difference]: With dead ends: 111 [2024-11-16 02:34:09,035 INFO L226 Difference]: Without dead ends: 108 [2024-11-16 02:34:09,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:34:09,037 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 109 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:09,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 138 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:34:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-16 02:34:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 65. [2024-11-16 02:34:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 02:34:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-11-16 02:34:09,053 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 24 [2024-11-16 02:34:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:09,053 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-11-16 02:34:09,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-11-16 02:34:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:34:09,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:09,056 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 02:34:09,075 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 02:34:09,256 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,SelfDestructingSolverStorable5 [2024-11-16 02:34:09,257 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:09,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1835750804, now seen corresponding path program 1 times [2024-11-16 02:34:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298011042] [2024-11-16 02:34:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298011042] [2024-11-16 02:34:09,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298011042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:09,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853115488] [2024-11-16 02:34:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:09,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:09,706 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 02:34:09,708 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 02:34:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:09,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:34:09,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:09,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:09,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:09,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:09,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:10,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:10,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:10,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853115488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:10,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-16 02:34:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238855661] [2024-11-16 02:34:10,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:10,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 02:34:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 02:34:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:34:10,331 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 02:34:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,159 INFO L93 Difference]: Finished difference Result 271 states and 373 transitions. [2024-11-16 02:34:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 02:34:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 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 30 [2024-11-16 02:34:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,161 INFO L225 Difference]: With dead ends: 271 [2024-11-16 02:34:11,161 INFO L226 Difference]: Without dead ends: 248 [2024-11-16 02:34:11,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:34:11,164 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 279 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 265 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:34:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-16 02:34:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 117. [2024-11-16 02:34:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 116 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 02:34:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-11-16 02:34:11,191 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 30 [2024-11-16 02:34:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,191 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-11-16 02:34:11,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 02:34:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-11-16 02:34:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:34:11,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,193 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 02:34:11,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:11,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:11,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:11,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2047101717, now seen corresponding path program 1 times [2024-11-16 02:34:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867377491] [2024-11-16 02:34:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:34:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867377491] [2024-11-16 02:34:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867377491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142978076] [2024-11-16 02:34:11,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:11,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:11,471 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,518 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2024-11-16 02:34:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 30 [2024-11-16 02:34:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,520 INFO L225 Difference]: With dead ends: 175 [2024-11-16 02:34:11,520 INFO L226 Difference]: Without dead ends: 123 [2024-11-16 02:34:11,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:11,521 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-16 02:34:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2024-11-16 02:34:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.361904761904762) internal successors, (143), 105 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 02:34:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-16 02:34:11,532 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 30 [2024-11-16 02:34:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,532 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-16 02:34:11,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2024-11-16 02:34:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:34:11,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,534 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 02:34:11,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 02:34:11,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:11,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1050029364, now seen corresponding path program 1 times [2024-11-16 02:34:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814142392] [2024-11-16 02:34:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:34:11,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814142392] [2024-11-16 02:34:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814142392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:11,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113776457] [2024-11-16 02:34:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:11,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:11,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:11,599 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,642 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2024-11-16 02:34:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 30 [2024-11-16 02:34:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,643 INFO L225 Difference]: With dead ends: 140 [2024-11-16 02:34:11,643 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 02:34:11,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:11,644 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 60 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 45 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 02:34:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2024-11-16 02:34:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 73 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 02:34:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2024-11-16 02:34:11,656 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 30 [2024-11-16 02:34:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,657 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2024-11-16 02:34:11,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2024-11-16 02:34:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:34:11,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,659 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:11,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 02:34:11,659 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:11,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 808924434, now seen corresponding path program 1 times [2024-11-16 02:34:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403172570] [2024-11-16 02:34:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:34:11,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403172570] [2024-11-16 02:34:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403172570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635416453] [2024-11-16 02:34:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:11,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:11,724 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 02:34:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,760 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-11-16 02:34:11,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:11,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 30 [2024-11-16 02:34:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,761 INFO L225 Difference]: With dead ends: 108 [2024-11-16 02:34:11,761 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 02:34:11,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:11,762 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 57 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 02:34:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2024-11-16 02:34:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 02:34:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2024-11-16 02:34:11,768 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 30 [2024-11-16 02:34:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,768 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2024-11-16 02:34:11,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 02:34:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2024-11-16 02:34:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:34:11,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,769 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:11,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 02:34:11,770 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:11,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -35547437, now seen corresponding path program 1 times [2024-11-16 02:34:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030206031] [2024-11-16 02:34:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:12,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030206031] [2024-11-16 02:34:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030206031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147137111] [2024-11-16 02:34:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:12,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:12,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:12,063 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 02:34:12,065 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 02:34:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:12,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:34:12,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:12,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:12,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:12,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:12,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:12,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:12,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:12,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147137111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:12,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:12,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 8] total 19 [2024-11-16 02:34:12,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355241144] [2024-11-16 02:34:12,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:12,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:34:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:34:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:34:12,501 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:34:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:13,105 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2024-11-16 02:34:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:34:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 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 30 [2024-11-16 02:34:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:13,110 INFO L225 Difference]: With dead ends: 162 [2024-11-16 02:34:13,110 INFO L226 Difference]: Without dead ends: 159 [2024-11-16 02:34:13,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=1114, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:34:13,112 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:13,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 197 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:34:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-16 02:34:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 90. [2024-11-16 02:34:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2808988764044944) internal successors, (114), 89 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 02:34:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2024-11-16 02:34:13,119 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 30 [2024-11-16 02:34:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:13,120 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2024-11-16 02:34:13,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:34:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2024-11-16 02:34:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:13,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:13,121 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:13,138 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 02:34:13,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:13,326 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:13,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1697345565, now seen corresponding path program 2 times [2024-11-16 02:34:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717893611] [2024-11-16 02:34:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:13,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717893611] [2024-11-16 02:34:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717893611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250451726] [2024-11-16 02:34:13,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:13,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:13,659 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 02:34:13,660 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 02:34:13,742 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:13,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:13,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:34:13,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:13,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:13,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:13,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:14,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:14,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:14,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:14,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:14,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250451726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:14,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:14,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2024-11-16 02:34:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219744977] [2024-11-16 02:34:14,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:14,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:34:14,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:34:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:34:14,263 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 02:34:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:15,258 INFO L93 Difference]: Finished difference Result 409 states and 521 transitions. [2024-11-16 02:34:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 02:34:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:15,260 INFO L225 Difference]: With dead ends: 409 [2024-11-16 02:34:15,260 INFO L226 Difference]: Without dead ends: 380 [2024-11-16 02:34:15,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=598, Invalid=2482, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:34:15,262 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 472 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:15,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 307 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:34:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-16 02:34:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 162. [2024-11-16 02:34:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2857142857142858) internal successors, (207), 161 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 02:34:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 207 transitions. [2024-11-16 02:34:15,277 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 207 transitions. Word has length 36 [2024-11-16 02:34:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,277 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 207 transitions. [2024-11-16 02:34:15,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 02:34:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 207 transitions. [2024-11-16 02:34:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:15,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,279 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,296 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 02:34:15,483 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,SelfDestructingSolverStorable11 [2024-11-16 02:34:15,484 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1728365372, now seen corresponding path program 1 times [2024-11-16 02:34:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201797201] [2024-11-16 02:34:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:34:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201797201] [2024-11-16 02:34:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201797201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:15,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:15,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:15,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817916638] [2024-11-16 02:34:15,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:15,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:15,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:15,544 INFO L87 Difference]: Start difference. First operand 162 states and 207 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:15,590 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2024-11-16 02:34:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:15,592 INFO L225 Difference]: With dead ends: 214 [2024-11-16 02:34:15,592 INFO L226 Difference]: Without dead ends: 177 [2024-11-16 02:34:15,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:15,593 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 46 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:15,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 57 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-16 02:34:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 152. [2024-11-16 02:34:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2649006622516556) internal successors, (191), 151 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 02:34:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 191 transitions. [2024-11-16 02:34:15,605 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 191 transitions. Word has length 36 [2024-11-16 02:34:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,605 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 191 transitions. [2024-11-16 02:34:15,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 191 transitions. [2024-11-16 02:34:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:15,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,608 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 02:34:15,608 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1661358619, now seen corresponding path program 1 times [2024-11-16 02:34:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986137275] [2024-11-16 02:34:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:34:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:15,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986137275] [2024-11-16 02:34:15,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986137275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:15,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:15,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584716694] [2024-11-16 02:34:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:15,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:15,668 INFO L87 Difference]: Start difference. First operand 152 states and 191 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:15,708 INFO L93 Difference]: Finished difference Result 195 states and 236 transitions. [2024-11-16 02:34:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:15,709 INFO L225 Difference]: With dead ends: 195 [2024-11-16 02:34:15,709 INFO L226 Difference]: Without dead ends: 166 [2024-11-16 02:34:15,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:15,710 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:15,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 46 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-16 02:34:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 143. [2024-11-16 02:34:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.2464788732394365) internal successors, (177), 142 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 02:34:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 177 transitions. [2024-11-16 02:34:15,722 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 177 transitions. Word has length 36 [2024-11-16 02:34:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,722 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 177 transitions. [2024-11-16 02:34:15,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 177 transitions. [2024-11-16 02:34:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:15,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,723 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 02:34:15,723 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash 53312377, now seen corresponding path program 1 times [2024-11-16 02:34:15,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934580223] [2024-11-16 02:34:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:34:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934580223] [2024-11-16 02:34:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934580223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:15,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:15,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50983066] [2024-11-16 02:34:15,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:15,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:15,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:15,789 INFO L87 Difference]: Start difference. First operand 143 states and 177 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:15,833 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2024-11-16 02:34:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:15,834 INFO L225 Difference]: With dead ends: 204 [2024-11-16 02:34:15,834 INFO L226 Difference]: Without dead ends: 163 [2024-11-16 02:34:15,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:15,835 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:15,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-16 02:34:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2024-11-16 02:34:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 142 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 02:34:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 176 transitions. [2024-11-16 02:34:15,848 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 176 transitions. Word has length 36 [2024-11-16 02:34:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,849 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 176 transitions. [2024-11-16 02:34:15,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 176 transitions. [2024-11-16 02:34:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:15,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,850 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 02:34:15,850 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2023896966, now seen corresponding path program 1 times [2024-11-16 02:34:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219273464] [2024-11-16 02:34:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:34:15,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:15,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219273464] [2024-11-16 02:34:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219273464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:15,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681505513] [2024-11-16 02:34:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:15,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:15,904 INFO L87 Difference]: Start difference. First operand 143 states and 176 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:15,944 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2024-11-16 02:34:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:15,945 INFO L225 Difference]: With dead ends: 183 [2024-11-16 02:34:15,945 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 02:34:15,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:15,945 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:15,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 46 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 02:34:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2024-11-16 02:34:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.217741935483871) internal successors, (151), 124 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 02:34:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2024-11-16 02:34:15,956 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 36 [2024-11-16 02:34:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,957 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2024-11-16 02:34:15,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2024-11-16 02:34:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:34:15,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 02:34:15,958 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 734668410, now seen corresponding path program 1 times [2024-11-16 02:34:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478510429] [2024-11-16 02:34:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478510429] [2024-11-16 02:34:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478510429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094645931] [2024-11-16 02:34:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:16,226 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 02:34:16,231 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 02:34:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:16,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 02:34:16,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:16,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:16,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:16,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:16,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:16,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094645931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:16,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 19 [2024-11-16 02:34:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60999957] [2024-11-16 02:34:16,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:34:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:34:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:34:16,638 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 02:34:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:17,325 INFO L93 Difference]: Finished difference Result 277 states and 329 transitions. [2024-11-16 02:34:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-16 02:34:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:34:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:17,327 INFO L225 Difference]: With dead ends: 277 [2024-11-16 02:34:17,327 INFO L226 Difference]: Without dead ends: 274 [2024-11-16 02:34:17,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=1626, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:34:17,328 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 108 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:17,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 268 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:34:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-16 02:34:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 166. [2024-11-16 02:34:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 165 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 02:34:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2024-11-16 02:34:17,353 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 36 [2024-11-16 02:34:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:17,354 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2024-11-16 02:34:17,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 02:34:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2024-11-16 02:34:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:34:17,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:17,355 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:17,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:34:17,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:34:17,559 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:17,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -363178293, now seen corresponding path program 1 times [2024-11-16 02:34:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986971467] [2024-11-16 02:34:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:34:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:17,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986971467] [2024-11-16 02:34:17,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986971467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:17,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:17,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:34:17,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594547214] [2024-11-16 02:34:17,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:17,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:34:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:17,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:34:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:34:17,591 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:17,625 INFO L93 Difference]: Finished difference Result 200 states and 238 transitions. [2024-11-16 02:34:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:34:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 02:34:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:17,626 INFO L225 Difference]: With dead ends: 200 [2024-11-16 02:34:17,626 INFO L226 Difference]: Without dead ends: 163 [2024-11-16 02:34:17,626 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 02:34:17,627 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:17,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 45 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-16 02:34:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2024-11-16 02:34:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.2206896551724138) internal successors, (177), 145 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 02:34:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2024-11-16 02:34:17,640 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 38 [2024-11-16 02:34:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:17,640 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2024-11-16 02:34:17,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2024-11-16 02:34:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:34:17,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:17,641 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:17,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 02:34:17,641 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:17,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1042661350, now seen corresponding path program 3 times [2024-11-16 02:34:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:17,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618059898] [2024-11-16 02:34:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618059898] [2024-11-16 02:34:17,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618059898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467150091] [2024-11-16 02:34:17,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:34:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:17,971 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 02:34:17,984 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 02:34:18,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:34:18,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:18,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 02:34:18,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:18,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:34:18,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:18,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:18,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2024-11-16 02:34:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:18,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:18,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:18,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:18,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467150091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:18,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:18,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-16 02:34:18,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103801863] [2024-11-16 02:34:18,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:18,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-16 02:34:18,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:18,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-16 02:34:18,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:34:18,711 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 02:34:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:20,340 INFO L93 Difference]: Finished difference Result 422 states and 502 transitions. [2024-11-16 02:34:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-16 02:34:20,341 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 0 states have call successors, (0), 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 42 [2024-11-16 02:34:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:20,342 INFO L225 Difference]: With dead ends: 422 [2024-11-16 02:34:20,342 INFO L226 Difference]: Without dead ends: 387 [2024-11-16 02:34:20,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=731, Invalid=3559, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 02:34:20,344 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 456 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:20,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 388 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:34:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-16 02:34:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 189. [2024-11-16 02:34:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.2127659574468086) internal successors, (228), 188 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 02:34:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2024-11-16 02:34:20,364 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 42 [2024-11-16 02:34:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:20,364 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2024-11-16 02:34:20,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 02:34:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2024-11-16 02:34:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:34:20,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:20,365 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:20,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:34:20,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:20,570 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:20,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1393461287, now seen corresponding path program 1 times [2024-11-16 02:34:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:20,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921588170] [2024-11-16 02:34:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 02:34:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921588170] [2024-11-16 02:34:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921588170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:20,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:20,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628640485] [2024-11-16 02:34:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:20,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:20,629 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:20,681 INFO L93 Difference]: Finished difference Result 263 states and 310 transitions. [2024-11-16 02:34:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:20,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 42 [2024-11-16 02:34:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:20,683 INFO L225 Difference]: With dead ends: 263 [2024-11-16 02:34:20,683 INFO L226 Difference]: Without dead ends: 208 [2024-11-16 02:34:20,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:20,685 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:20,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-16 02:34:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2024-11-16 02:34:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1899441340782122) internal successors, (213), 179 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2024-11-16 02:34:20,707 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 42 [2024-11-16 02:34:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:20,707 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2024-11-16 02:34:20,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2024-11-16 02:34:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:34:20,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:20,708 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:20,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 02:34:20,708 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:20,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1404777414, now seen corresponding path program 1 times [2024-11-16 02:34:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888951975] [2024-11-16 02:34:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 02:34:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:20,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888951975] [2024-11-16 02:34:20,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888951975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:20,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:20,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:34:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948471170] [2024-11-16 02:34:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:20,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:34:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:34:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:34:20,772 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:20,816 INFO L93 Difference]: Finished difference Result 235 states and 270 transitions. [2024-11-16 02:34:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:34:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 42 [2024-11-16 02:34:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:20,817 INFO L225 Difference]: With dead ends: 235 [2024-11-16 02:34:20,817 INFO L226 Difference]: Without dead ends: 200 [2024-11-16 02:34:20,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:34:20,819 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:20,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-16 02:34:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 171. [2024-11-16 02:34:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.1823529411764706) internal successors, (201), 170 states have internal predecessors, (201), 0 states have call successors, (0), 0 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 02:34:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 201 transitions. [2024-11-16 02:34:20,835 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 201 transitions. Word has length 42 [2024-11-16 02:34:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:20,835 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 201 transitions. [2024-11-16 02:34:20,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 02:34:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 201 transitions. [2024-11-16 02:34:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:34:20,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:20,836 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:20,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 02:34:20,837 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:20,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1185504932, now seen corresponding path program 1 times [2024-11-16 02:34:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050328686] [2024-11-16 02:34:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050328686] [2024-11-16 02:34:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050328686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987498434] [2024-11-16 02:34:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:21,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:21,120 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 02:34:21,121 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 02:34:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:21,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 02:34:21,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:21,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:21,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:21,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:21,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:21,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987498434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:21,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 27 [2024-11-16 02:34:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036835056] [2024-11-16 02:34:21,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:21,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:34:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:34:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:34:21,715 INFO L87 Difference]: Start difference. First operand 171 states and 201 transitions. Second operand has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 02:34:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:22,810 INFO L93 Difference]: Finished difference Result 394 states and 458 transitions. [2024-11-16 02:34:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-16 02:34:22,811 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 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 42 [2024-11-16 02:34:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:22,812 INFO L225 Difference]: With dead ends: 394 [2024-11-16 02:34:22,813 INFO L226 Difference]: Without dead ends: 391 [2024-11-16 02:34:22,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=517, Invalid=2453, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:34:22,814 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 125 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:22,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 396 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:34:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-16 02:34:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 209. [2024-11-16 02:34:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.1730769230769231) internal successors, (244), 208 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 02:34:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 244 transitions. [2024-11-16 02:34:22,845 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 244 transitions. Word has length 42 [2024-11-16 02:34:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 244 transitions. [2024-11-16 02:34:22,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 02:34:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 244 transitions. [2024-11-16 02:34:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:34:22,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:22,847 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:22,862 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 02:34:23,047 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,SelfDestructingSolverStorable21 [2024-11-16 02:34:23,047 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:23,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash -936277964, now seen corresponding path program 1 times [2024-11-16 02:34:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:23,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233638795] [2024-11-16 02:34:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:34:23,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:23,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233638795] [2024-11-16 02:34:23,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233638795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:23,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:23,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:34:23,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255750564] [2024-11-16 02:34:23,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:23,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:34:23,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:23,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:34:23,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:34:23,089 INFO L87 Difference]: Start difference. First operand 209 states and 244 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:23,146 INFO L93 Difference]: Finished difference Result 329 states and 386 transitions. [2024-11-16 02:34:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:34:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-16 02:34:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:23,148 INFO L225 Difference]: With dead ends: 329 [2024-11-16 02:34:23,148 INFO L226 Difference]: Without dead ends: 256 [2024-11-16 02:34:23,148 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 02:34:23,149 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:23,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-16 02:34:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 214. [2024-11-16 02:34:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.164319248826291) internal successors, (248), 213 states have internal predecessors, (248), 0 states have call successors, (0), 0 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 02:34:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2024-11-16 02:34:23,173 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 248 transitions. Word has length 44 [2024-11-16 02:34:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:23,173 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 248 transitions. [2024-11-16 02:34:23,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 248 transitions. [2024-11-16 02:34:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:34:23,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:23,174 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:23,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 02:34:23,176 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:23,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -51606194, now seen corresponding path program 1 times [2024-11-16 02:34:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582862075] [2024-11-16 02:34:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582862075] [2024-11-16 02:34:23,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582862075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360648634] [2024-11-16 02:34:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:23,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:23,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:23,414 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 02:34:23,415 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 02:34:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:23,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 02:34:23,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:23,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:23,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:23,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:23,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360648634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:23,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 26 [2024-11-16 02:34:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344055333] [2024-11-16 02:34:23,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:23,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:34:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:34:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:34:23,979 INFO L87 Difference]: Start difference. First operand 214 states and 248 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 02:34:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:25,363 INFO L93 Difference]: Finished difference Result 517 states and 589 transitions. [2024-11-16 02:34:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-16 02:34:25,363 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 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 48 [2024-11-16 02:34:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:25,365 INFO L225 Difference]: With dead ends: 517 [2024-11-16 02:34:25,365 INFO L226 Difference]: Without dead ends: 514 [2024-11-16 02:34:25,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=482, Invalid=3058, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:34:25,366 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 116 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:25,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 518 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 02:34:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-16 02:34:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 288. [2024-11-16 02:34:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.156794425087108) internal successors, (332), 287 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 02:34:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 332 transitions. [2024-11-16 02:34:25,398 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 332 transitions. Word has length 48 [2024-11-16 02:34:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:25,399 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 332 transitions. [2024-11-16 02:34:25,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 02:34:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 332 transitions. [2024-11-16 02:34:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:34:25,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:25,400 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:25,416 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 02:34:25,600 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 02:34:25,601 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:25,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 266988188, now seen corresponding path program 1 times [2024-11-16 02:34:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251931567] [2024-11-16 02:34:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 02:34:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251931567] [2024-11-16 02:34:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251931567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:34:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748332289] [2024-11-16 02:34:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:25,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:34:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:34:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:34:25,630 INFO L87 Difference]: Start difference. First operand 288 states and 332 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:25,682 INFO L93 Difference]: Finished difference Result 322 states and 370 transitions. [2024-11-16 02:34:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:34:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 02:34:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:25,684 INFO L225 Difference]: With dead ends: 322 [2024-11-16 02:34:25,684 INFO L226 Difference]: Without dead ends: 273 [2024-11-16 02:34:25,684 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 02:34:25,685 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:25,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-16 02:34:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 256. [2024-11-16 02:34:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1568627450980393) internal successors, (295), 255 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 02:34:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 295 transitions. [2024-11-16 02:34:25,713 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 295 transitions. Word has length 50 [2024-11-16 02:34:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:25,713 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 295 transitions. [2024-11-16 02:34:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 295 transitions. [2024-11-16 02:34:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:34:25,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:25,715 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:25,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-16 02:34:25,715 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:25,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1158909458, now seen corresponding path program 2 times [2024-11-16 02:34:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476784528] [2024-11-16 02:34:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 02:34:25,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:25,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476784528] [2024-11-16 02:34:25,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476784528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:34:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:34:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:34:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082920275] [2024-11-16 02:34:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:34:25,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:34:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:34:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:34:25,749 INFO L87 Difference]: Start difference. First operand 256 states and 295 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:25,800 INFO L93 Difference]: Finished difference Result 318 states and 366 transitions. [2024-11-16 02:34:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:34:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 02:34:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:25,802 INFO L225 Difference]: With dead ends: 318 [2024-11-16 02:34:25,802 INFO L226 Difference]: Without dead ends: 248 [2024-11-16 02:34:25,802 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 02:34:25,803 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:25,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:34:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-16 02:34:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 217. [2024-11-16 02:34:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1435185185185186) internal successors, (247), 216 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 02:34:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 247 transitions. [2024-11-16 02:34:25,832 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 247 transitions. Word has length 52 [2024-11-16 02:34:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:25,832 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 247 transitions. [2024-11-16 02:34:25,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 247 transitions. [2024-11-16 02:34:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:34:25,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:25,833 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:25,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-16 02:34:25,834 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:25,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1854488376, now seen corresponding path program 4 times [2024-11-16 02:34:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019475328] [2024-11-16 02:34:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 59 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019475328] [2024-11-16 02:34:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019475328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351679011] [2024-11-16 02:34:26,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:26,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:26,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:26,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:26,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:34:26,204 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:26,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:26,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:34:26,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:26,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351679011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:26,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 33 [2024-11-16 02:34:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439288664] [2024-11-16 02:34:26,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:26,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:34:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:34:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:34:26,824 INFO L87 Difference]: Start difference. First operand 217 states and 247 transitions. Second operand has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 02:34:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:27,239 INFO L93 Difference]: Finished difference Result 404 states and 449 transitions. [2024-11-16 02:34:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:34:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 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 54 [2024-11-16 02:34:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:27,240 INFO L225 Difference]: With dead ends: 404 [2024-11-16 02:34:27,240 INFO L226 Difference]: Without dead ends: 280 [2024-11-16 02:34:27,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:34:27,241 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 303 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:27,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 204 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:34:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-16 02:34:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 238. [2024-11-16 02:34:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.1265822784810127) internal successors, (267), 237 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 02:34:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 267 transitions. [2024-11-16 02:34:27,271 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 267 transitions. Word has length 54 [2024-11-16 02:34:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:27,271 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 267 transitions. [2024-11-16 02:34:27,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 02:34:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 267 transitions. [2024-11-16 02:34:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 02:34:27,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:27,272 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:27,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:27,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 02:34:27,473 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:27,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2138731122, now seen corresponding path program 5 times [2024-11-16 02:34:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638823639] [2024-11-16 02:34:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638823639] [2024-11-16 02:34:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638823639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61256409] [2024-11-16 02:34:28,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:28,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:28,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:34:28,162 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:34:28,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:28,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:34:28,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:28,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:28,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:28,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:28,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:28,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:28,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:28,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:28,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:28,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:28,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61256409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:28,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 37 [2024-11-16 02:34:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951473733] [2024-11-16 02:34:28,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:28,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 02:34:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 02:34:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:34:28,989 INFO L87 Difference]: Start difference. First operand 238 states and 267 transitions. Second operand has 37 states, 37 states have (on average 4.648648648648648) internal successors, (172), 37 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 02:34:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:31,539 INFO L93 Difference]: Finished difference Result 466 states and 518 transitions. [2024-11-16 02:34:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-16 02:34:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.648648648648648) internal successors, (172), 37 states have internal predecessors, (172), 0 states have call successors, (0), 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 62 [2024-11-16 02:34:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:31,541 INFO L225 Difference]: With dead ends: 466 [2024-11-16 02:34:31,541 INFO L226 Difference]: Without dead ends: 455 [2024-11-16 02:34:31,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1142, Invalid=8364, Unknown=0, NotChecked=0, Total=9506 [2024-11-16 02:34:31,543 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 448 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:31,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 753 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:34:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-16 02:34:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 297. [2024-11-16 02:34:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.1114864864864864) internal successors, (329), 296 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 02:34:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 329 transitions. [2024-11-16 02:34:31,600 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 329 transitions. Word has length 62 [2024-11-16 02:34:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:31,600 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 329 transitions. [2024-11-16 02:34:31,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.648648648648648) internal successors, (172), 37 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 02:34:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 329 transitions. [2024-11-16 02:34:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 02:34:31,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:31,601 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:31,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:31,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-16 02:34:31,803 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:31,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1348396908, now seen corresponding path program 1 times [2024-11-16 02:34:31,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:31,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855888597] [2024-11-16 02:34:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855888597] [2024-11-16 02:34:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855888597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48478696] [2024-11-16 02:34:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:32,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:32,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:32,216 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:32,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:34:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:32,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:34:32,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:32,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:32,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:32,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:32,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:32,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:32,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:32,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:32,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48478696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:33,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 15] total 31 [2024-11-16 02:34:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15415249] [2024-11-16 02:34:33,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:33,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:34:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:34:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:34:33,012 INFO L87 Difference]: Start difference. First operand 297 states and 329 transitions. Second operand has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 31 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 02:34:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:35,138 INFO L93 Difference]: Finished difference Result 597 states and 660 transitions. [2024-11-16 02:34:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 02:34:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 31 states have internal predecessors, (136), 0 states have call successors, (0), 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 62 [2024-11-16 02:34:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:35,141 INFO L225 Difference]: With dead ends: 597 [2024-11-16 02:34:35,141 INFO L226 Difference]: Without dead ends: 594 [2024-11-16 02:34:35,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=937, Invalid=7435, Unknown=0, NotChecked=0, Total=8372 [2024-11-16 02:34:35,143 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 290 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:35,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 695 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 02:34:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-16 02:34:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 333. [2024-11-16 02:34:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.1234939759036144) internal successors, (373), 332 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 02:34:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 373 transitions. [2024-11-16 02:34:35,195 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 373 transitions. Word has length 62 [2024-11-16 02:34:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:35,195 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 373 transitions. [2024-11-16 02:34:35,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 31 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 02:34:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 373 transitions. [2024-11-16 02:34:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:34:35,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:35,197 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:35,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:34:35,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 02:34:35,397 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:35,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2115825275, now seen corresponding path program 6 times [2024-11-16 02:34:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736524569] [2024-11-16 02:34:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736524569] [2024-11-16 02:34:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736524569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919132498] [2024-11-16 02:34:35,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:34:35,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:35,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:35,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:34:36,046 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:34:36,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:36,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:34:36,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:36,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:34:36,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:36,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:36,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:36,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-16 02:34:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:36,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:36,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:36,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:36,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919132498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:36,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:36,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 41 [2024-11-16 02:34:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475053463] [2024-11-16 02:34:36,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 02:34:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 02:34:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1497, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:34:36,884 INFO L87 Difference]: Start difference. First operand 333 states and 373 transitions. Second operand has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 02:34:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:40,868 INFO L93 Difference]: Finished difference Result 665 states and 751 transitions. [2024-11-16 02:34:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-16 02:34:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 02:34:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:40,871 INFO L225 Difference]: With dead ends: 665 [2024-11-16 02:34:40,871 INFO L226 Difference]: Without dead ends: 632 [2024-11-16 02:34:40,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4782 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1916, Invalid=15376, Unknown=0, NotChecked=0, Total=17292 [2024-11-16 02:34:40,875 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 894 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:40,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1057 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 02:34:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-16 02:34:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 369. [2024-11-16 02:34:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.1195652173913044) internal successors, (412), 368 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 02:34:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 412 transitions. [2024-11-16 02:34:40,935 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 412 transitions. Word has length 68 [2024-11-16 02:34:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:40,935 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 412 transitions. [2024-11-16 02:34:40,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 02:34:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 412 transitions. [2024-11-16 02:34:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:34:40,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:40,936 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:40,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:41,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:41,137 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:41,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1126154678, now seen corresponding path program 1 times [2024-11-16 02:34:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:41,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870317887] [2024-11-16 02:34:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870317887] [2024-11-16 02:34:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870317887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950277428] [2024-11-16 02:34:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:41,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:41,536 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:41,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:34:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:41,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 02:34:41,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:41,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:41,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:41,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:41,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:42,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:42,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:42,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950277428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:42,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:42,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14] total 29 [2024-11-16 02:34:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474026373] [2024-11-16 02:34:42,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:42,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:34:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:34:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:34:42,199 INFO L87 Difference]: Start difference. First operand 369 states and 412 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 02:34:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:44,266 INFO L93 Difference]: Finished difference Result 594 states and 656 transitions. [2024-11-16 02:34:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-16 02:34:44,266 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 02:34:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:44,267 INFO L225 Difference]: With dead ends: 594 [2024-11-16 02:34:44,267 INFO L226 Difference]: Without dead ends: 591 [2024-11-16 02:34:44,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1022, Invalid=7908, Unknown=0, NotChecked=0, Total=8930 [2024-11-16 02:34:44,268 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 193 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:44,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 751 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:34:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-16 02:34:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 367. [2024-11-16 02:34:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.1174863387978142) internal successors, (409), 366 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 02:34:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 409 transitions. [2024-11-16 02:34:44,325 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 409 transitions. Word has length 68 [2024-11-16 02:34:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:44,326 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 409 transitions. [2024-11-16 02:34:44,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 02:34:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 409 transitions. [2024-11-16 02:34:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 02:34:44,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:44,327 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:44,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 02:34:44,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:44,528 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:44,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash -603291708, now seen corresponding path program 7 times [2024-11-16 02:34:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:44,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580059205] [2024-11-16 02:34:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 14 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580059205] [2024-11-16 02:34:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580059205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108216312] [2024-11-16 02:34:45,035 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:34:45,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:45,037 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:45,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:34:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:45,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 02:34:45,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:45,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:45,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:45,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:45,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 14 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:45,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:46,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:46,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 14 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:46,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108216312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:46,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:46,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 44 [2024-11-16 02:34:46,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843924659] [2024-11-16 02:34:46,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:46,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:34:46,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:46,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:34:46,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:34:46,330 INFO L87 Difference]: Start difference. First operand 367 states and 409 transitions. Second operand has 44 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 44 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 02:34:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:52,474 INFO L93 Difference]: Finished difference Result 951 states and 1083 transitions. [2024-11-16 02:34:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-16 02:34:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 44 states have internal predecessors, (208), 0 states have call successors, (0), 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 74 [2024-11-16 02:34:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:52,477 INFO L225 Difference]: With dead ends: 951 [2024-11-16 02:34:52,477 INFO L226 Difference]: Without dead ends: 926 [2024-11-16 02:34:52,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7606 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2663, Invalid=23743, Unknown=0, NotChecked=0, Total=26406 [2024-11-16 02:34:52,479 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1104 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:52,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1181 Invalid, 3890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 02:34:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-16 02:34:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 403. [2024-11-16 02:34:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.1169154228855722) internal successors, (449), 402 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 02:34:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 449 transitions. [2024-11-16 02:34:52,549 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 449 transitions. Word has length 74 [2024-11-16 02:34:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:52,549 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 449 transitions. [2024-11-16 02:34:52,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 44 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 02:34:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 449 transitions. [2024-11-16 02:34:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 02:34:52,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:52,551 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:52,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 02:34:52,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:52,756 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:52,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -817062149, now seen corresponding path program 2 times [2024-11-16 02:34:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809154925] [2024-11-16 02:34:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809154925] [2024-11-16 02:34:53,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809154925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814146050] [2024-11-16 02:34:53,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:53,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:53,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:53,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:34:53,316 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:53,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:53,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 02:34:53,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:53,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:53,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:53,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:54,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:54,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:54,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814146050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:54,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:54,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 15] total 33 [2024-11-16 02:34:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171465628] [2024-11-16 02:34:54,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:54,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:34:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:34:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:34:54,109 INFO L87 Difference]: Start difference. First operand 403 states and 449 transitions. Second operand has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 02:34:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:56,936 INFO L93 Difference]: Finished difference Result 618 states and 681 transitions. [2024-11-16 02:34:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-16 02:34:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 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 74 [2024-11-16 02:34:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:56,939 INFO L225 Difference]: With dead ends: 618 [2024-11-16 02:34:56,939 INFO L226 Difference]: Without dead ends: 615 [2024-11-16 02:34:56,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4534 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1397, Invalid=12175, Unknown=0, NotChecked=0, Total=13572 [2024-11-16 02:34:56,941 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 254 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:56,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 958 Invalid, 3610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 02:34:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-16 02:34:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 401. [2024-11-16 02:34:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.115) internal successors, (446), 400 states have internal predecessors, (446), 0 states have call successors, (0), 0 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 02:34:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 446 transitions. [2024-11-16 02:34:57,020 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 446 transitions. Word has length 74 [2024-11-16 02:34:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:57,020 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 446 transitions. [2024-11-16 02:34:57,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 02:34:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 446 transitions. [2024-11-16 02:34:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:34:57,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:57,021 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:57,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 02:34:57,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-16 02:34:57,222 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:57,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -781306291, now seen corresponding path program 8 times [2024-11-16 02:34:57,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:57,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448204272] [2024-11-16 02:34:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:57,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 16 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448204272] [2024-11-16 02:34:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448204272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300612621] [2024-11-16 02:34:57,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:57,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:57,750 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:57,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:34:57,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:57,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:57,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:34:57,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:58,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:58,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 16 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:58,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:58,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:58,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 16 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:59,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300612621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:59,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 48 [2024-11-16 02:34:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588485035] [2024-11-16 02:34:59,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:59,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-16 02:34:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-16 02:34:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 02:34:59,130 INFO L87 Difference]: Start difference. First operand 401 states and 446 transitions. Second operand has 48 states, 48 states have (on average 4.729166666666667) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:35:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:04,880 INFO L93 Difference]: Finished difference Result 886 states and 1009 transitions. [2024-11-16 02:35:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-16 02:35:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.729166666666667) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 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 80 [2024-11-16 02:35:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:04,883 INFO L225 Difference]: With dead ends: 886 [2024-11-16 02:35:04,883 INFO L226 Difference]: Without dead ends: 869 [2024-11-16 02:35:04,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7182 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2535, Invalid=21957, Unknown=0, NotChecked=0, Total=24492 [2024-11-16 02:35:04,885 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 894 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:04,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1254 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 3094 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 02:35:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-16 02:35:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 437. [2024-11-16 02:35:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.110091743119266) internal successors, (484), 436 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 02:35:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 484 transitions. [2024-11-16 02:35:04,949 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 484 transitions. Word has length 80 [2024-11-16 02:35:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:04,950 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 484 transitions. [2024-11-16 02:35:04,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.729166666666667) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:35:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 484 transitions. [2024-11-16 02:35:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:35:04,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:04,951 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:04,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 02:35:05,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:05,151 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:05,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 539873334, now seen corresponding path program 1 times [2024-11-16 02:35:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:05,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037474189] [2024-11-16 02:35:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:05,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-16 02:35:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037474189] [2024-11-16 02:35:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037474189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:35:05,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:35:05,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:35:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599061997] [2024-11-16 02:35:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:35:05,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:35:05,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:05,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:35:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:35:05,187 INFO L87 Difference]: Start difference. First operand 437 states and 484 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:05,283 INFO L93 Difference]: Finished difference Result 559 states and 615 transitions. [2024-11-16 02:35:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:35:05,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 02:35:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:05,285 INFO L225 Difference]: With dead ends: 559 [2024-11-16 02:35:05,285 INFO L226 Difference]: Without dead ends: 434 [2024-11-16 02:35:05,285 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 02:35:05,286 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:05,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 59 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:35:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-16 02:35:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 378. [2024-11-16 02:35:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.1007957559681698) internal successors, (415), 377 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 415 transitions. [2024-11-16 02:35:05,361 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 415 transitions. Word has length 80 [2024-11-16 02:35:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:05,361 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 415 transitions. [2024-11-16 02:35:05,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 415 transitions. [2024-11-16 02:35:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:35:05,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:05,362 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:05,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-16 02:35:05,362 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:05,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:05,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1195509817, now seen corresponding path program 2 times [2024-11-16 02:35:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:05,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519580257] [2024-11-16 02:35:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519580257] [2024-11-16 02:35:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519580257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:35:05,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361529877] [2024-11-16 02:35:05,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:35:05,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:35:05,766 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:35:05,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:35:05,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:35:05,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:35:05,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 02:35:05,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:35:06,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:35:06,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:35:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:06,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:35:06,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:35:06,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:35:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361529877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:35:06,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:35:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 18] total 37 [2024-11-16 02:35:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401980605] [2024-11-16 02:35:06,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:35:06,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 02:35:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 02:35:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:35:06,724 INFO L87 Difference]: Start difference. First operand 378 states and 415 transitions. Second operand has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 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 02:35:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:10,317 INFO L93 Difference]: Finished difference Result 681 states and 745 transitions. [2024-11-16 02:35:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 02:35:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 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 80 [2024-11-16 02:35:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:10,319 INFO L225 Difference]: With dead ends: 681 [2024-11-16 02:35:10,319 INFO L226 Difference]: Without dead ends: 678 [2024-11-16 02:35:10,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4386 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1338, Invalid=12002, Unknown=0, NotChecked=0, Total=13340 [2024-11-16 02:35:10,320 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 238 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 5268 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:10,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1212 Invalid, 5701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 5268 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 02:35:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-16 02:35:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 376. [2024-11-16 02:35:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0986666666666667) internal successors, (412), 375 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 02:35:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 412 transitions. [2024-11-16 02:35:10,390 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 412 transitions. Word has length 80 [2024-11-16 02:35:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:10,390 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 412 transitions. [2024-11-16 02:35:10,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 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 02:35:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 412 transitions. [2024-11-16 02:35:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 02:35:10,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:10,392 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:10,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 02:35:10,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:10,596 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:10,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash -303619562, now seen corresponding path program 9 times [2024-11-16 02:35:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826501233] [2024-11-16 02:35:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826501233] [2024-11-16 02:35:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826501233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:35:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015484535] [2024-11-16 02:35:11,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:35:11,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:35:11,037 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:35:11,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:35:11,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 02:35:11,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:35:11,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 02:35:11,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:35:11,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:35:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:11,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:35:12,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:35:12,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:35:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015484535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:35:12,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:35:12,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 42 [2024-11-16 02:35:12,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984279800] [2024-11-16 02:35:12,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:35:12,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 02:35:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:12,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 02:35:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 02:35:12,080 INFO L87 Difference]: Start difference. First operand 376 states and 412 transitions. Second operand has 42 states, 42 states have (on average 5.404761904761905) internal successors, (227), 42 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:35:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:15,343 INFO L93 Difference]: Finished difference Result 629 states and 687 transitions. [2024-11-16 02:35:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 02:35:15,344 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.404761904761905) internal successors, (227), 42 states have internal predecessors, (227), 0 states have call successors, (0), 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 86 [2024-11-16 02:35:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:15,345 INFO L225 Difference]: With dead ends: 629 [2024-11-16 02:35:15,345 INFO L226 Difference]: Without dead ends: 618 [2024-11-16 02:35:15,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3562 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1257, Invalid=11175, Unknown=0, NotChecked=0, Total=12432 [2024-11-16 02:35:15,347 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 324 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:15,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 999 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 02:35:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-16 02:35:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 382. [2024-11-16 02:35:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.0971128608923884) internal successors, (418), 381 states have internal predecessors, (418), 0 states have call successors, (0), 0 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 02:35:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 418 transitions. [2024-11-16 02:35:15,404 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 418 transitions. Word has length 86 [2024-11-16 02:35:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:15,404 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 418 transitions. [2024-11-16 02:35:15,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.404761904761905) internal successors, (227), 42 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:35:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 418 transitions. [2024-11-16 02:35:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 02:35:15,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:15,405 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:15,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 02:35:15,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:15,606 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:15,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash 196010899, now seen corresponding path program 2 times [2024-11-16 02:35:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924641446] [2024-11-16 02:35:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:15,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:15,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924641446] [2024-11-16 02:35:15,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924641446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:35:15,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444377917] [2024-11-16 02:35:15,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:35:15,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:15,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:35:15,998 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:35:15,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:35:16,138 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:35:16,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:35:16,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 02:35:16,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:35:16,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:35:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:16,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:35:16,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:35:16,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:35:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:16,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444377917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:35:16,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:35:16,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 38 [2024-11-16 02:35:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290493386] [2024-11-16 02:35:16,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:35:16,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 02:35:16,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 02:35:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:35:16,873 INFO L87 Difference]: Start difference. First operand 382 states and 418 transitions. Second operand has 38 states, 38 states have (on average 4.657894736842105) internal successors, (177), 38 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 02:35:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:21,853 INFO L93 Difference]: Finished difference Result 833 states and 912 transitions. [2024-11-16 02:35:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-16 02:35:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.657894736842105) internal successors, (177), 38 states have internal predecessors, (177), 0 states have call successors, (0), 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 86 [2024-11-16 02:35:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:21,855 INFO L225 Difference]: With dead ends: 833 [2024-11-16 02:35:21,855 INFO L226 Difference]: Without dead ends: 830 [2024-11-16 02:35:21,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4998 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1323, Invalid=14177, Unknown=0, NotChecked=0, Total=15500 [2024-11-16 02:35:21,857 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 256 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 8163 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 8769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 8163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:21,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1516 Invalid, 8769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 8163 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 02:35:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-16 02:35:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 388. [2024-11-16 02:35:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0956072351421189) internal successors, (424), 387 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 02:35:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 424 transitions. [2024-11-16 02:35:21,922 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 424 transitions. Word has length 86 [2024-11-16 02:35:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:21,922 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 424 transitions. [2024-11-16 02:35:21,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.657894736842105) internal successors, (177), 38 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 02:35:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 424 transitions. [2024-11-16 02:35:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 02:35:21,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:21,924 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:21,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 02:35:22,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-16 02:35:22,124 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:22,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1316465889, now seen corresponding path program 10 times [2024-11-16 02:35:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961966748] [2024-11-16 02:35:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 264 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961966748] [2024-11-16 02:35:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961966748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:35:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393566167] [2024-11-16 02:35:22,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:35:22,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:35:22,563 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:35:22,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:35:22,693 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:35:22,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:35:22,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:35:22,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:35:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 320 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:23,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:35:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 320 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:23,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393566167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:35:23,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:35:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 51 [2024-11-16 02:35:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938963198] [2024-11-16 02:35:23,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:35:23,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 02:35:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 02:35:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=1979, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:35:23,805 INFO L87 Difference]: Start difference. First operand 388 states and 424 transitions. Second operand has 51 states, 51 states have (on average 5.117647058823529) internal successors, (261), 51 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)