./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label53.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 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:10:46,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:10:46,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:10:46,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:10:46,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:10:46,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:10:46,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:10:46,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:10:46,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:10:46,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:10:46,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:10:46,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:10:46,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:10:46,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:10:46,700 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:10:46,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:10:46,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:10:46,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:10:46,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:10:46,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:10:46,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:10:46,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:10:46,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:10:46,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:10:46,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:10:46,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:10:46,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:10:46,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:10:46,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:10:46,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:10:46,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:10:46,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:10:46,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:10:46,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:10:46,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:10:46,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:10:46,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:10:46,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:10:46,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:10:46,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:10:46,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:10:46,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:10:46,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 [2024-11-16 03:10:46,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:10:47,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:10:47,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:10:47,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:10:47,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:10:47,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label53.c [2024-11-16 03:10:48,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:10:48,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:10:48,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c [2024-11-16 03:10:48,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee536e765/5fa78a52d77f461391bcf360e86fca88/FLAG45f9cc090 [2024-11-16 03:10:48,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee536e765/5fa78a52d77f461391bcf360e86fca88 [2024-11-16 03:10:48,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:10:48,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:10:48,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:10:48,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:10:48,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:10:48,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:10:48" (1/1) ... [2024-11-16 03:10:48,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7798b11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:48, skipping insertion in model container [2024-11-16 03:10:48,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:10:48" (1/1) ... [2024-11-16 03:10:48,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:10:49,414 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2024-11-16 03:10:49,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:10:49,457 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:10:49,627 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2024-11-16 03:10:49,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:10:49,655 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:10:49,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49 WrapperNode [2024-11-16 03:10:49,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:10:49,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:10:49,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:10:49,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:10:49,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,811 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:10:49,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:10:49,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:10:49,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:10:49,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:10:49,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,892 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:10:49,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:49,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:50,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:50,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:50,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:10:50,050 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:10:50,050 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:10:50,050 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:10:50,051 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (1/1) ... [2024-11-16 03:10:50,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:10:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:50,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:10:50,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:10:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:10:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:10:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:10:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:10:50,280 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:10:50,282 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:10:52,027 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:10:52,028 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:10:52,056 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:10:52,056 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:10:52,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:10:52 BoogieIcfgContainer [2024-11-16 03:10:52,057 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:10:52,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:10:52,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:10:52,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:10:52,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:10:48" (1/3) ... [2024-11-16 03:10:52,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6926f479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:10:52, skipping insertion in model container [2024-11-16 03:10:52,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:49" (2/3) ... [2024-11-16 03:10:52,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6926f479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:10:52, skipping insertion in model container [2024-11-16 03:10:52,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:10:52" (3/3) ... [2024-11-16 03:10:52,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2024-11-16 03:10:52,089 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:10:52,089 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:10:52,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:10:52,171 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;@49f5bce6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:10:52,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:10:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 03:10:52,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:52,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:52,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:52,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1316824747, now seen corresponding path program 1 times [2024-11-16 03:10:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309348937] [2024-11-16 03:10:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309348937] [2024-11-16 03:10:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309348937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334731652] [2024-11-16 03:10:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:53,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:53,188 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:54,243 INFO L93 Difference]: Finished difference Result 870 states and 1520 transitions. [2024-11-16 03:10:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-16 03:10:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:54,266 INFO L225 Difference]: With dead ends: 870 [2024-11-16 03:10:54,267 INFO L226 Difference]: Without dead ends: 471 [2024-11-16 03:10:54,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:54,275 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 84 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:54,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 170 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:10:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-16 03:10:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 457. [2024-11-16 03:10:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.6228070175438596) internal successors, (740), 456 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 740 transitions. [2024-11-16 03:10:54,353 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 740 transitions. Word has length 196 [2024-11-16 03:10:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:54,357 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 740 transitions. [2024-11-16 03:10:54,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 740 transitions. [2024-11-16 03:10:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-16 03:10:54,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:54,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:54,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:10:54,362 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:54,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -476775773, now seen corresponding path program 1 times [2024-11-16 03:10:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:54,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831373028] [2024-11-16 03:10:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:54,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831373028] [2024-11-16 03:10:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831373028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:54,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:54,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:54,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469845187] [2024-11-16 03:10:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:54,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:54,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:54,835 INFO L87 Difference]: Start difference. First operand 457 states and 740 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 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 03:10:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:55,097 INFO L93 Difference]: Finished difference Result 1367 states and 2216 transitions. [2024-11-16 03:10:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 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) Word has length 202 [2024-11-16 03:10:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:55,102 INFO L225 Difference]: With dead ends: 1367 [2024-11-16 03:10:55,102 INFO L226 Difference]: Without dead ends: 912 [2024-11-16 03:10:55,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:55,105 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 367 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:55,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 600 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:10:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-16 03:10:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 909. [2024-11-16 03:10:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.618942731277533) internal successors, (1470), 908 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1470 transitions. [2024-11-16 03:10:55,147 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1470 transitions. Word has length 202 [2024-11-16 03:10:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:55,148 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1470 transitions. [2024-11-16 03:10:55,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 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 03:10:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1470 transitions. [2024-11-16 03:10:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-16 03:10:55,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:55,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:55,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:10:55,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:55,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash 994576212, now seen corresponding path program 1 times [2024-11-16 03:10:55,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:55,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079540497] [2024-11-16 03:10:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:55,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:55,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079540497] [2024-11-16 03:10:55,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079540497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:55,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:55,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322157521] [2024-11-16 03:10:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:55,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:55,469 INFO L87 Difference]: Start difference. First operand 909 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:56,266 INFO L93 Difference]: Finished difference Result 2634 states and 4284 transitions. [2024-11-16 03:10:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-16 03:10:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:56,273 INFO L225 Difference]: With dead ends: 2634 [2024-11-16 03:10:56,274 INFO L226 Difference]: Without dead ends: 1727 [2024-11-16 03:10:56,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:56,276 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 218 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:56,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 201 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-16 03:10:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1727. [2024-11-16 03:10:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.4020857473928157) internal successors, (2420), 1726 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2420 transitions. [2024-11-16 03:10:56,317 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2420 transitions. Word has length 203 [2024-11-16 03:10:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:56,317 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2420 transitions. [2024-11-16 03:10:56,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2420 transitions. [2024-11-16 03:10:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-16 03:10:56,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:56,323 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:56,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:10:56,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:56,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1550585167, now seen corresponding path program 1 times [2024-11-16 03:10:56,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:56,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369163018] [2024-11-16 03:10:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:56,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:56,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369163018] [2024-11-16 03:10:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369163018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:56,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:56,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:56,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581160401] [2024-11-16 03:10:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:56,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:56,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:56,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:56,544 INFO L87 Difference]: Start difference. First operand 1727 states and 2420 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:57,373 INFO L93 Difference]: Finished difference Result 5115 states and 7189 transitions. [2024-11-16 03:10:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2024-11-16 03:10:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:57,387 INFO L225 Difference]: With dead ends: 5115 [2024-11-16 03:10:57,387 INFO L226 Difference]: Without dead ends: 3390 [2024-11-16 03:10:57,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:57,394 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:57,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2024-11-16 03:10:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 3362. [2024-11-16 03:10:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3361 states have (on average 1.3754834870574233) internal successors, (4623), 3361 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 4623 transitions. [2024-11-16 03:10:57,473 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 4623 transitions. Word has length 205 [2024-11-16 03:10:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:57,473 INFO L471 AbstractCegarLoop]: Abstraction has 3362 states and 4623 transitions. [2024-11-16 03:10:57,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 4623 transitions. [2024-11-16 03:10:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-16 03:10:57,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:57,481 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:57,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:10:57,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:57,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1049029050, now seen corresponding path program 1 times [2024-11-16 03:10:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:57,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513336485] [2024-11-16 03:10:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 03:10:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513336485] [2024-11-16 03:10:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513336485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:57,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:57,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:57,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544801507] [2024-11-16 03:10:57,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:57,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:57,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:57,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:57,945 INFO L87 Difference]: Start difference. First operand 3362 states and 4623 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:59,019 INFO L93 Difference]: Finished difference Result 10032 states and 13799 transitions. [2024-11-16 03:10:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2024-11-16 03:10:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:59,043 INFO L225 Difference]: With dead ends: 10032 [2024-11-16 03:10:59,043 INFO L226 Difference]: Without dead ends: 6672 [2024-11-16 03:10:59,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:59,049 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 287 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:59,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 102 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:10:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2024-11-16 03:10:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6666. [2024-11-16 03:10:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 6665 states have (on average 1.3495873968492123) internal successors, (8995), 6665 states have internal predecessors, (8995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 8995 transitions. [2024-11-16 03:10:59,200 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 8995 transitions. Word has length 217 [2024-11-16 03:10:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:59,200 INFO L471 AbstractCegarLoop]: Abstraction has 6666 states and 8995 transitions. [2024-11-16 03:10:59,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 8995 transitions. [2024-11-16 03:10:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-16 03:10:59,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:59,211 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:59,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:10:59,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:59,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1444439313, now seen corresponding path program 1 times [2024-11-16 03:10:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149998254] [2024-11-16 03:10:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:59,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149998254] [2024-11-16 03:10:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149998254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:10:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060940901] [2024-11-16 03:10:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:59,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:10:59,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:10:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:59,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:10:59,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:10:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:10:59,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:10:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060940901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:10:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 03:10:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779102075] [2024-11-16 03:10:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:59,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:59,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:59,765 INFO L87 Difference]: Start difference. First operand 6666 states and 8995 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:00,590 INFO L93 Difference]: Finished difference Result 16604 states and 23118 transitions. [2024-11-16 03:11:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 221 [2024-11-16 03:11:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:00,626 INFO L225 Difference]: With dead ends: 16604 [2024-11-16 03:11:00,626 INFO L226 Difference]: Without dead ends: 9940 [2024-11-16 03:11:00,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:00,638 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 232 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:00,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 409 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:11:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2024-11-16 03:11:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 9116. [2024-11-16 03:11:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9116 states, 9115 states have (on average 1.295776193088316) internal successors, (11811), 9115 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9116 states to 9116 states and 11811 transitions. [2024-11-16 03:11:00,821 INFO L78 Accepts]: Start accepts. Automaton has 9116 states and 11811 transitions. Word has length 221 [2024-11-16 03:11:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:00,821 INFO L471 AbstractCegarLoop]: Abstraction has 9116 states and 11811 transitions. [2024-11-16 03:11:00,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 9116 states and 11811 transitions. [2024-11-16 03:11:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-16 03:11:00,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:00,835 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:00,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:11:01,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 03:11:01,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:01,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 912084539, now seen corresponding path program 1 times [2024-11-16 03:11:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340370510] [2024-11-16 03:11:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:11:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340370510] [2024-11-16 03:11:01,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340370510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:11:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284612307] [2024-11-16 03:11:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:01,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:11:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:11:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:01,383 INFO L87 Difference]: Start difference. First operand 9116 states and 11811 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:02,422 INFO L93 Difference]: Finished difference Result 34884 states and 45358 transitions. [2024-11-16 03:11:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:11:02,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2024-11-16 03:11:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:02,478 INFO L225 Difference]: With dead ends: 34884 [2024-11-16 03:11:02,478 INFO L226 Difference]: Without dead ends: 25770 [2024-11-16 03:11:02,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:02,496 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 564 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:02,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 556 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:11:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25770 states. [2024-11-16 03:11:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25770 to 25749. [2024-11-16 03:11:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25749 states, 25748 states have (on average 1.265185645487028) internal successors, (32576), 25748 states have internal predecessors, (32576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25749 states to 25749 states and 32576 transitions. [2024-11-16 03:11:03,078 INFO L78 Accepts]: Start accepts. Automaton has 25749 states and 32576 transitions. Word has length 268 [2024-11-16 03:11:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:03,079 INFO L471 AbstractCegarLoop]: Abstraction has 25749 states and 32576 transitions. [2024-11-16 03:11:03,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 25749 states and 32576 transitions. [2024-11-16 03:11:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-16 03:11:03,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:03,108 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:03,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:11:03,110 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:03,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1773447266, now seen corresponding path program 1 times [2024-11-16 03:11:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160848530] [2024-11-16 03:11:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:11:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160848530] [2024-11-16 03:11:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160848530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:11:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692686977] [2024-11-16 03:11:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:03,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:03,898 INFO L87 Difference]: Start difference. First operand 25749 states and 32576 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:04,643 INFO L93 Difference]: Finished difference Result 52520 states and 66286 transitions. [2024-11-16 03:11:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:04,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2024-11-16 03:11:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:04,694 INFO L225 Difference]: With dead ends: 52520 [2024-11-16 03:11:04,694 INFO L226 Difference]: Without dead ends: 26773 [2024-11-16 03:11:04,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:04,726 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 138 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:04,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 203 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:11:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26773 states. [2024-11-16 03:11:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26773 to 26769. [2024-11-16 03:11:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26769 states, 26768 states have (on average 1.2589659294680215) internal successors, (33700), 26768 states have internal predecessors, (33700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26769 states to 26769 states and 33700 transitions. [2024-11-16 03:11:05,343 INFO L78 Accepts]: Start accepts. Automaton has 26769 states and 33700 transitions. Word has length 271 [2024-11-16 03:11:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:05,343 INFO L471 AbstractCegarLoop]: Abstraction has 26769 states and 33700 transitions. [2024-11-16 03:11:05,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 26769 states and 33700 transitions. [2024-11-16 03:11:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-16 03:11:05,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:05,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:05,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:11:05,369 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:05,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash -597792343, now seen corresponding path program 1 times [2024-11-16 03:11:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513546174] [2024-11-16 03:11:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 03:11:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:05,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513546174] [2024-11-16 03:11:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513546174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:05,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:11:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738509569] [2024-11-16 03:11:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:05,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:11:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:11:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:05,875 INFO L87 Difference]: Start difference. First operand 26769 states and 33700 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:06,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:06,740 INFO L93 Difference]: Finished difference Result 62468 states and 79293 transitions. [2024-11-16 03:11:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:11:06,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 295 [2024-11-16 03:11:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:06,795 INFO L225 Difference]: With dead ends: 62468 [2024-11-16 03:11:06,795 INFO L226 Difference]: Without dead ends: 36721 [2024-11-16 03:11:06,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:06,830 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 570 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:06,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 63 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:11:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36721 states. [2024-11-16 03:11:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36721 to 36713. [2024-11-16 03:11:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36713 states, 36712 states have (on average 1.2129548921333624) internal successors, (44530), 36712 states have internal predecessors, (44530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36713 states to 36713 states and 44530 transitions. [2024-11-16 03:11:07,599 INFO L78 Accepts]: Start accepts. Automaton has 36713 states and 44530 transitions. Word has length 295 [2024-11-16 03:11:07,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:07,600 INFO L471 AbstractCegarLoop]: Abstraction has 36713 states and 44530 transitions. [2024-11-16 03:11:07,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 36713 states and 44530 transitions. [2024-11-16 03:11:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-16 03:11:07,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:07,634 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:07,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:11:07,634 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:07,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1311986348, now seen corresponding path program 1 times [2024-11-16 03:11:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727253757] [2024-11-16 03:11:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:11:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727253757] [2024-11-16 03:11:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727253757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:11:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502020429] [2024-11-16 03:11:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:08,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:08,080 INFO L87 Difference]: Start difference. First operand 36713 states and 44530 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:08,979 INFO L93 Difference]: Finished difference Result 100368 states and 121579 transitions. [2024-11-16 03:11:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-11-16 03:11:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:09,076 INFO L225 Difference]: With dead ends: 100368 [2024-11-16 03:11:09,077 INFO L226 Difference]: Without dead ends: 63657 [2024-11-16 03:11:09,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:09,114 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:09,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 158 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:11:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63657 states. [2024-11-16 03:11:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63657 to 62829. [2024-11-16 03:11:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62829 states, 62828 states have (on average 1.1851244667982428) internal successors, (74459), 62828 states have internal predecessors, (74459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62829 states to 62829 states and 74459 transitions. [2024-11-16 03:11:10,411 INFO L78 Accepts]: Start accepts. Automaton has 62829 states and 74459 transitions. Word has length 299 [2024-11-16 03:11:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:10,413 INFO L471 AbstractCegarLoop]: Abstraction has 62829 states and 74459 transitions. [2024-11-16 03:11:10,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 62829 states and 74459 transitions. [2024-11-16 03:11:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-16 03:11:10,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:10,438 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:10,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:11:10,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:10,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1786546877, now seen corresponding path program 1 times [2024-11-16 03:11:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669344392] [2024-11-16 03:11:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 03:11:10,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669344392] [2024-11-16 03:11:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669344392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:10,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:10,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:11:10,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947132886] [2024-11-16 03:11:10,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:10,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:10,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:10,822 INFO L87 Difference]: Start difference. First operand 62829 states and 74459 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:11,798 INFO L93 Difference]: Finished difference Result 153516 states and 182482 transitions. [2024-11-16 03:11:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2024-11-16 03:11:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:12,155 INFO L225 Difference]: With dead ends: 153516 [2024-11-16 03:11:12,155 INFO L226 Difference]: Without dead ends: 92525 [2024-11-16 03:11:12,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:12,223 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 205 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:12,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 84 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:11:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92525 states. [2024-11-16 03:11:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92525 to 92517. [2024-11-16 03:11:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92517 states, 92516 states have (on average 1.1870919624713563) internal successors, (109825), 92516 states have internal predecessors, (109825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92517 states to 92517 states and 109825 transitions. [2024-11-16 03:11:13,723 INFO L78 Accepts]: Start accepts. Automaton has 92517 states and 109825 transitions. Word has length 323 [2024-11-16 03:11:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:13,723 INFO L471 AbstractCegarLoop]: Abstraction has 92517 states and 109825 transitions. [2024-11-16 03:11:13,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 92517 states and 109825 transitions. [2024-11-16 03:11:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-16 03:11:13,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:13,751 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:13,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:11:13,751 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:13,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1025985339, now seen corresponding path program 1 times [2024-11-16 03:11:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419499040] [2024-11-16 03:11:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:13,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 03:11:14,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:14,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419499040] [2024-11-16 03:11:14,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419499040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:14,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:11:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589189589] [2024-11-16 03:11:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:14,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:11:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:11:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:14,151 INFO L87 Difference]: Start difference. First operand 92517 states and 109825 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:16,162 INFO L93 Difference]: Finished difference Result 201030 states and 239028 transitions. [2024-11-16 03:11:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:11:16,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 324 [2024-11-16 03:11:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:16,343 INFO L225 Difference]: With dead ends: 201030 [2024-11-16 03:11:16,344 INFO L226 Difference]: Without dead ends: 110963 [2024-11-16 03:11:16,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:11:16,369 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 472 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:16,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 86 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 03:11:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110963 states. [2024-11-16 03:11:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110963 to 110061. [2024-11-16 03:11:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110061 states, 110060 states have (on average 1.1596129383972378) internal successors, (127627), 110060 states have internal predecessors, (127627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110061 states to 110061 states and 127627 transitions. [2024-11-16 03:11:17,870 INFO L78 Accepts]: Start accepts. Automaton has 110061 states and 127627 transitions. Word has length 324 [2024-11-16 03:11:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:17,871 INFO L471 AbstractCegarLoop]: Abstraction has 110061 states and 127627 transitions. [2024-11-16 03:11:17,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 110061 states and 127627 transitions. [2024-11-16 03:11:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-16 03:11:17,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:17,918 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:17,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:11:17,919 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:17,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1019451314, now seen corresponding path program 1 times [2024-11-16 03:11:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618384301] [2024-11-16 03:11:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:11:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:18,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618384301] [2024-11-16 03:11:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618384301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:11:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:11:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308349353] [2024-11-16 03:11:18,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:18,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:18,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:18,629 INFO L87 Difference]: Start difference. First operand 110061 states and 127627 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:20,091 INFO L93 Difference]: Finished difference Result 266850 states and 309073 transitions. [2024-11-16 03:11:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 330 [2024-11-16 03:11:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:20,287 INFO L225 Difference]: With dead ends: 266850 [2024-11-16 03:11:20,287 INFO L226 Difference]: Without dead ends: 156791 [2024-11-16 03:11:20,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:11:20,326 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 206 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:20,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 135 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:11:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156791 states. [2024-11-16 03:11:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156791 to 155959. [2024-11-16 03:11:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155959 states, 155958 states have (on average 1.1360686851588249) internal successors, (177179), 155958 states have internal predecessors, (177179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155959 states to 155959 states and 177179 transitions. [2024-11-16 03:11:22,643 INFO L78 Accepts]: Start accepts. Automaton has 155959 states and 177179 transitions. Word has length 330 [2024-11-16 03:11:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:22,644 INFO L471 AbstractCegarLoop]: Abstraction has 155959 states and 177179 transitions. [2024-11-16 03:11:22,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 155959 states and 177179 transitions. [2024-11-16 03:11:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-16 03:11:22,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:22,689 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:22,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:11:22,690 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:22,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash 796185546, now seen corresponding path program 1 times [2024-11-16 03:11:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791266026] [2024-11-16 03:11:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 03:11:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791266026] [2024-11-16 03:11:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791266026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145700037] [2024-11-16 03:11:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:23,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:23,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:23,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:11:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:23,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:11:23,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-16 03:11:23,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145700037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:23,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:23,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:11:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165379867] [2024-11-16 03:11:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:23,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:23,915 INFO L87 Difference]: Start difference. First operand 155959 states and 177179 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:25,694 INFO L93 Difference]: Finished difference Result 301980 states and 342905 transitions. [2024-11-16 03:11:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2024-11-16 03:11:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:25,914 INFO L225 Difference]: With dead ends: 301980 [2024-11-16 03:11:25,914 INFO L226 Difference]: Without dead ends: 146023 [2024-11-16 03:11:25,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:25,995 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 211 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:25,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 355 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:11:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146023 states. [2024-11-16 03:11:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146023 to 144323. [2024-11-16 03:11:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144323 states, 144322 states have (on average 1.1221504690899515) internal successors, (161951), 144322 states have internal predecessors, (161951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144323 states to 144323 states and 161951 transitions. [2024-11-16 03:11:28,421 INFO L78 Accepts]: Start accepts. Automaton has 144323 states and 161951 transitions. Word has length 331 [2024-11-16 03:11:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:28,421 INFO L471 AbstractCegarLoop]: Abstraction has 144323 states and 161951 transitions. [2024-11-16 03:11:28,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 144323 states and 161951 transitions. [2024-11-16 03:11:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-16 03:11:28,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:28,466 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:28,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:11:28,667 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,SelfDestructingSolverStorable13 [2024-11-16 03:11:28,667 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:28,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash 432660075, now seen corresponding path program 1 times [2024-11-16 03:11:28,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:28,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146631715] [2024-11-16 03:11:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:28,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 106 proven. 7 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-16 03:11:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:29,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146631715] [2024-11-16 03:11:29,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146631715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:29,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483866446] [2024-11-16 03:11:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:29,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:29,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:29,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:11:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:29,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:11:29,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-16 03:11:29,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:29,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483866446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:29,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:29,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:11:29,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542750909] [2024-11-16 03:11:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:29,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:29,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:29,652 INFO L87 Difference]: Start difference. First operand 144323 states and 161951 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:31,094 INFO L93 Difference]: Finished difference Result 286840 states and 322023 transitions. [2024-11-16 03:11:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:31,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 334 [2024-11-16 03:11:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:31,272 INFO L225 Difference]: With dead ends: 286840 [2024-11-16 03:11:31,272 INFO L226 Difference]: Without dead ends: 143539 [2024-11-16 03:11:31,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:31,359 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 69 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:31,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 295 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:11:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143539 states. [2024-11-16 03:11:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143539 to 143507. [2024-11-16 03:11:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143507 states, 143506 states have (on average 1.1157094476885985) internal successors, (160111), 143506 states have internal predecessors, (160111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143507 states to 143507 states and 160111 transitions. [2024-11-16 03:11:33,716 INFO L78 Accepts]: Start accepts. Automaton has 143507 states and 160111 transitions. Word has length 334 [2024-11-16 03:11:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:33,716 INFO L471 AbstractCegarLoop]: Abstraction has 143507 states and 160111 transitions. [2024-11-16 03:11:33,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 143507 states and 160111 transitions. [2024-11-16 03:11:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-16 03:11:33,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:33,774 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:33,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:11:33,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:33,975 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:33,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -951647296, now seen corresponding path program 1 times [2024-11-16 03:11:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:33,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952619320] [2024-11-16 03:11:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 139 proven. 7 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-16 03:11:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952619320] [2024-11-16 03:11:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952619320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433056972] [2024-11-16 03:11:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:34,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:34,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:34,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:11:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:34,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:11:34,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-16 03:11:35,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:35,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433056972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:35,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:35,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:11:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117442662] [2024-11-16 03:11:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:35,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:35,223 INFO L87 Difference]: Start difference. First operand 143507 states and 160111 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:36,507 INFO L93 Difference]: Finished difference Result 283548 states and 316269 transitions. [2024-11-16 03:11:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 366 [2024-11-16 03:11:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:36,696 INFO L225 Difference]: With dead ends: 283548 [2024-11-16 03:11:36,696 INFO L226 Difference]: Without dead ends: 141063 [2024-11-16 03:11:37,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:37,233 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 63 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:37,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 336 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:11:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141063 states. [2024-11-16 03:11:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141063 to 139411. [2024-11-16 03:11:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139411 states, 139410 states have (on average 1.0931640484900653) internal successors, (152398), 139410 states have internal predecessors, (152398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139411 states to 139411 states and 152398 transitions. [2024-11-16 03:11:38,902 INFO L78 Accepts]: Start accepts. Automaton has 139411 states and 152398 transitions. Word has length 366 [2024-11-16 03:11:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:38,902 INFO L471 AbstractCegarLoop]: Abstraction has 139411 states and 152398 transitions. [2024-11-16 03:11:38,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 139411 states and 152398 transitions. [2024-11-16 03:11:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-16 03:11:38,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:38,949 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:38,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:11:39,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 03:11:39,150 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:39,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash 676480098, now seen corresponding path program 1 times [2024-11-16 03:11:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:39,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131780241] [2024-11-16 03:11:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:39,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 175 proven. 7 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-16 03:11:40,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131780241] [2024-11-16 03:11:40,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131780241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816318167] [2024-11-16 03:11:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:40,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:40,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:40,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:11:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:40,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:11:40,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-16 03:11:40,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816318167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:40,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:11:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042583314] [2024-11-16 03:11:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:40,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:40,269 INFO L87 Difference]: Start difference. First operand 139411 states and 152398 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:41,718 INFO L93 Difference]: Finished difference Result 272098 states and 297432 transitions. [2024-11-16 03:11:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:41,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 397 [2024-11-16 03:11:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:41,910 INFO L225 Difference]: With dead ends: 272098 [2024-11-16 03:11:41,910 INFO L226 Difference]: Without dead ends: 133709 [2024-11-16 03:11:41,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:41,988 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 222 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:41,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 311 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:11:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133709 states. [2024-11-16 03:11:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133709 to 125731. [2024-11-16 03:11:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125731 states, 125730 states have (on average 1.0786447148651872) internal successors, (135618), 125730 states have internal predecessors, (135618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125731 states to 125731 states and 135618 transitions. [2024-11-16 03:11:43,785 INFO L78 Accepts]: Start accepts. Automaton has 125731 states and 135618 transitions. Word has length 397 [2024-11-16 03:11:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:43,786 INFO L471 AbstractCegarLoop]: Abstraction has 125731 states and 135618 transitions. [2024-11-16 03:11:43,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 125731 states and 135618 transitions. [2024-11-16 03:11:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-16 03:11:43,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:43,832 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:43,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:11:44,032 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,SelfDestructingSolverStorable16 [2024-11-16 03:11:44,033 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:44,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2083215371, now seen corresponding path program 1 times [2024-11-16 03:11:44,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:44,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174013858] [2024-11-16 03:11:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:44,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 189 proven. 7 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-16 03:11:45,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174013858] [2024-11-16 03:11:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174013858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717571266] [2024-11-16 03:11:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:45,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:45,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:45,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:11:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:45,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:11:45,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-16 03:11:45,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717571266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:45,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:11:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187656027] [2024-11-16 03:11:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:45,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:45,305 INFO L87 Difference]: Start difference. First operand 125731 states and 135618 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:46,443 INFO L93 Difference]: Finished difference Result 352363 states and 379925 transitions. [2024-11-16 03:11:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2024-11-16 03:11:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:46,692 INFO L225 Difference]: With dead ends: 352363 [2024-11-16 03:11:46,692 INFO L226 Difference]: Without dead ends: 227450 [2024-11-16 03:11:46,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:11:46,753 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 293 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:46,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 869 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:11:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227450 states.