./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/Problem17_label00.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 28aa2103046ded31b2c668ebdabdc65e41c8f634ba4d86773363e431476a6327 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:37:08,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:37:08,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:37:08,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:37:08,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:37:08,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:37:08,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:37:08,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:37:08,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:37:08,528 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:37:08,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:37:08,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:37:08,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:37:08,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:37:08,530 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:37:08,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:37:08,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:37:08,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:37:08,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:37:08,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:37:08,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:37:08,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:37:08,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:37:08,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:37:08,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:37:08,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:37:08,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:37:08,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:37:08,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:37:08,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:37:08,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:37:08,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:37:08,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:37:08,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:37:08,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:37:08,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:37:08,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:37:08,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:37:08,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:37:08,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:37:08,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:37:08,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:37:08,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28aa2103046ded31b2c668ebdabdc65e41c8f634ba4d86773363e431476a6327 [2024-11-08 11:37:08,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:37:08,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:37:08,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:37:08,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:37:08,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:37:08,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label00.c [2024-11-08 11:37:10,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:37:10,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:37:10,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label00.c [2024-11-08 11:37:10,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5b73c4d/fd8885fc251e45c5901672284d543cbc/FLAG61483429a [2024-11-08 11:37:10,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5b73c4d/fd8885fc251e45c5901672284d543cbc [2024-11-08 11:37:10,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:37:10,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:37:10,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:37:10,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:37:10,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:37:10,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:37:10" (1/1) ... [2024-11-08 11:37:10,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8a5ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:10, skipping insertion in model container [2024-11-08 11:37:10,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:37:10" (1/1) ... [2024-11-08 11:37:10,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:37:11,007 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/Problem17_label00.c[7994,8007] [2024-11-08 11:37:11,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:37:11,549 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:37:11,574 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/Problem17_label00.c[7994,8007] [2024-11-08 11:37:11,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:37:11,836 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:37:11,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11 WrapperNode [2024-11-08 11:37:11,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:37:11,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:37:11,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:37:11,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:37:11,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:11,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,250 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-08 11:37:12,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:37:12,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:37:12,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:37:12,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:37:12,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,474 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]. [2024-11-08 11:37:12,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:37:12,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:37:12,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:37:12,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:37:12,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (1/1) ... [2024-11-08 11:37:12,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:37:12,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:37:12,727 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) [2024-11-08 11:37:12,729 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 [2024-11-08 11:37:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:37:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:37:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:37:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:37:12,944 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:37:12,946 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:37:16,491 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-08 11:37:16,491 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:37:16,526 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:37:16,532 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:37:16,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:37:16 BoogieIcfgContainer [2024-11-08 11:37:16,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:37:16,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:37:16,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:37:16,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:37:16,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:37:10" (1/3) ... [2024-11-08 11:37:16,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d67adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:37:16, skipping insertion in model container [2024-11-08 11:37:16,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:11" (2/3) ... [2024-11-08 11:37:16,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d67adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:37:16, skipping insertion in model container [2024-11-08 11:37:16,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:37:16" (3/3) ... [2024-11-08 11:37:16,542 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2024-11-08 11:37:16,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:37:16,560 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:37:16,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:37:16,658 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;@3d1f259d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:37:16,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:37:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 11:37:16,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:16,679 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] [2024-11-08 11:37:16,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:16,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2024-11-08 11:37:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127821473] [2024-11-08 11:37:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127821473] [2024-11-08 11:37:17,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127821473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:17,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:17,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669450441] [2024-11-08 11:37:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:17,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:17,144 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:19,549 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-08 11:37:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 11:37:19,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:19,568 INFO L225 Difference]: With dead ends: 1642 [2024-11-08 11:37:19,568 INFO L226 Difference]: Without dead ends: 975 [2024-11-08 11:37:19,575 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 [2024-11-08 11:37:19,580 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 436 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:19,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:37:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-08 11:37:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-08 11:37:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-08 11:37:19,672 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 54 [2024-11-08 11:37:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:19,673 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-08 11:37:19,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-08 11:37:19,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 11:37:19,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:19,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:19,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:37:19,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:19,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 628146390, now seen corresponding path program 1 times [2024-11-08 11:37:19,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:19,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092159038] [2024-11-08 11:37:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092159038] [2024-11-08 11:37:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092159038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706971216] [2024-11-08 11:37:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:20,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:37:20,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:37:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:37:20,160 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:23,757 INFO L93 Difference]: Finished difference Result 3737 states and 5655 transitions. [2024-11-08 11:37:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:37:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-11-08 11:37:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:23,768 INFO L225 Difference]: With dead ends: 3737 [2024-11-08 11:37:23,769 INFO L226 Difference]: Without dead ends: 2767 [2024-11-08 11:37:23,770 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 [2024-11-08 11:37:23,772 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 866 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:23,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 313 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-08 11:37:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2024-11-08 11:37:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2724. [2024-11-08 11:37:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.3947851634226955) internal successors, (3798), 2723 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3798 transitions. [2024-11-08 11:37:23,829 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3798 transitions. Word has length 124 [2024-11-08 11:37:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:23,830 INFO L471 AbstractCegarLoop]: Abstraction has 2724 states and 3798 transitions. [2024-11-08 11:37:23,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3798 transitions. [2024-11-08 11:37:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-08 11:37:23,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:23,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:23,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:37:23,835 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:23,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash 527466105, now seen corresponding path program 1 times [2024-11-08 11:37:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653192092] [2024-11-08 11:37:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:23,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653192092] [2024-11-08 11:37:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653192092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:24,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:24,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193153367] [2024-11-08 11:37:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:24,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:24,053 INFO L87 Difference]: Start difference. First operand 2724 states and 3798 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:26,115 INFO L93 Difference]: Finished difference Result 8009 states and 11161 transitions. [2024-11-08 11:37:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:26,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2024-11-08 11:37:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:26,132 INFO L225 Difference]: With dead ends: 8009 [2024-11-08 11:37:26,132 INFO L226 Difference]: Without dead ends: 4428 [2024-11-08 11:37:26,138 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 [2024-11-08 11:37:26,139 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:26,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:37:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2024-11-08 11:37:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2024-11-08 11:37:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 1.2071380167156087) internal successors, (5344), 4427 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5344 transitions. [2024-11-08 11:37:26,242 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5344 transitions. Word has length 146 [2024-11-08 11:37:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:26,244 INFO L471 AbstractCegarLoop]: Abstraction has 4428 states and 5344 transitions. [2024-11-08 11:37:26,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5344 transitions. [2024-11-08 11:37:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-08 11:37:26,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:26,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:26,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:37:26,254 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:26,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2015197805, now seen corresponding path program 1 times [2024-11-08 11:37:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:26,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918305237] [2024-11-08 11:37:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:26,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918305237] [2024-11-08 11:37:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918305237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:26,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930152452] [2024-11-08 11:37:26,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:26,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:26,583 INFO L87 Difference]: Start difference. First operand 4428 states and 5344 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:28,095 INFO L93 Difference]: Finished difference Result 10989 states and 13620 transitions. [2024-11-08 11:37:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-08 11:37:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:28,117 INFO L225 Difference]: With dead ends: 10989 [2024-11-08 11:37:28,117 INFO L226 Difference]: Without dead ends: 6563 [2024-11-08 11:37:28,125 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 [2024-11-08 11:37:28,126 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:28,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 801 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 11:37:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2024-11-08 11:37:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 6563. [2024-11-08 11:37:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6563 states, 6562 states have (on average 1.2025297165498323) internal successors, (7891), 6562 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 7891 transitions. [2024-11-08 11:37:28,242 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 7891 transitions. Word has length 206 [2024-11-08 11:37:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:28,243 INFO L471 AbstractCegarLoop]: Abstraction has 6563 states and 7891 transitions. [2024-11-08 11:37:28,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 7891 transitions. [2024-11-08 11:37:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-08 11:37:28,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:28,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:37:28,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:37:28,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:28,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1777362264, now seen corresponding path program 1 times [2024-11-08 11:37:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:28,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040835940] [2024-11-08 11:37:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 11:37:28,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:28,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040835940] [2024-11-08 11:37:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040835940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:28,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:28,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189327205] [2024-11-08 11:37:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:28,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:28,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:28,490 INFO L87 Difference]: Start difference. First operand 6563 states and 7891 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:30,157 INFO L93 Difference]: Finished difference Result 16521 states and 20210 transitions. [2024-11-08 11:37:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:30,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 208 [2024-11-08 11:37:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:30,193 INFO L225 Difference]: With dead ends: 16521 [2024-11-08 11:37:30,197 INFO L226 Difference]: Without dead ends: 9960 [2024-11-08 11:37:30,208 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 [2024-11-08 11:37:30,209 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 400 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:30,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 486 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2024-11-08 11:37:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 6961. [2024-11-08 11:37:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6961 states, 6960 states have (on average 1.1939655172413792) internal successors, (8310), 6960 states have internal predecessors, (8310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 8310 transitions. [2024-11-08 11:37:30,326 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 8310 transitions. Word has length 208 [2024-11-08 11:37:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:30,327 INFO L471 AbstractCegarLoop]: Abstraction has 6961 states and 8310 transitions. [2024-11-08 11:37:30,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 8310 transitions. [2024-11-08 11:37:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-08 11:37:30,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:30,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:37:30,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:37:30,331 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:30,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1928280324, now seen corresponding path program 1 times [2024-11-08 11:37:30,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:30,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682901717] [2024-11-08 11:37:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682901717] [2024-11-08 11:37:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682901717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:30,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70583120] [2024-11-08 11:37:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:30,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:30,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:30,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:30,527 INFO L87 Difference]: Start difference. First operand 6961 states and 8310 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:32,239 INFO L93 Difference]: Finished difference Result 17324 states and 21059 transitions. [2024-11-08 11:37:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 [2024-11-08 11:37:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:32,272 INFO L225 Difference]: With dead ends: 17324 [2024-11-08 11:37:32,273 INFO L226 Difference]: Without dead ends: 10365 [2024-11-08 11:37:32,282 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 [2024-11-08 11:37:32,283 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 424 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:32,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 452 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2024-11-08 11:37:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 9509. [2024-11-08 11:37:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9508 states have (on average 1.1959402608329828) internal successors, (11371), 9508 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 11371 transitions. [2024-11-08 11:37:32,425 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 11371 transitions. Word has length 221 [2024-11-08 11:37:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:32,426 INFO L471 AbstractCegarLoop]: Abstraction has 9509 states and 11371 transitions. [2024-11-08 11:37:32,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 11371 transitions. [2024-11-08 11:37:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-08 11:37:32,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:32,431 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:37:32,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:37:32,431 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:32,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:32,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1694467582, now seen corresponding path program 1 times [2024-11-08 11:37:32,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:32,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962536248] [2024-11-08 11:37:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:32,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962536248] [2024-11-08 11:37:32,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962536248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789852125] [2024-11-08 11:37:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:32,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:32,600 INFO L87 Difference]: Start difference. First operand 9509 states and 11371 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:34,529 INFO L93 Difference]: Finished difference Result 25399 states and 30227 transitions. [2024-11-08 11:37:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-08 11:37:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:34,555 INFO L225 Difference]: With dead ends: 25399 [2024-11-08 11:37:34,555 INFO L226 Difference]: Without dead ends: 15892 [2024-11-08 11:37:34,565 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 [2024-11-08 11:37:34,565 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 485 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:34,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 282 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:37:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15892 states. [2024-11-08 11:37:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15892 to 14184. [2024-11-08 11:37:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 14183 states have (on average 1.184587181837411) internal successors, (16801), 14183 states have internal predecessors, (16801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 16801 transitions. [2024-11-08 11:37:34,760 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 16801 transitions. Word has length 253 [2024-11-08 11:37:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:34,761 INFO L471 AbstractCegarLoop]: Abstraction has 14184 states and 16801 transitions. [2024-11-08 11:37:34,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 16801 transitions. [2024-11-08 11:37:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-08 11:37:34,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:34,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:37:34,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:37:34,767 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:34,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash 524926456, now seen corresponding path program 1 times [2024-11-08 11:37:34,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648715578] [2024-11-08 11:37:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:35,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648715578] [2024-11-08 11:37:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648715578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:35,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:35,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:35,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857742110] [2024-11-08 11:37:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:35,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:35,160 INFO L87 Difference]: Start difference. First operand 14184 states and 16801 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:37,363 INFO L93 Difference]: Finished difference Result 33921 states and 40606 transitions. [2024-11-08 11:37:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:37,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2024-11-08 11:37:37,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:37,406 INFO L225 Difference]: With dead ends: 33921 [2024-11-08 11:37:37,406 INFO L226 Difference]: Without dead ends: 19739 [2024-11-08 11:37:37,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:37,424 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 455 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:37,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 454 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:37:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19739 states. [2024-11-08 11:37:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19739 to 18029. [2024-11-08 11:37:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18029 states, 18028 states have (on average 1.2058464610605724) internal successors, (21739), 18028 states have internal predecessors, (21739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18029 states to 18029 states and 21739 transitions. [2024-11-08 11:37:37,656 INFO L78 Accepts]: Start accepts. Automaton has 18029 states and 21739 transitions. Word has length 270 [2024-11-08 11:37:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:37,657 INFO L471 AbstractCegarLoop]: Abstraction has 18029 states and 21739 transitions. [2024-11-08 11:37:37,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 18029 states and 21739 transitions. [2024-11-08 11:37:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-08 11:37:37,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:37,663 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:37,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:37:37,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:37,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash 937950836, now seen corresponding path program 1 times [2024-11-08 11:37:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453135682] [2024-11-08 11:37:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 11:37:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453135682] [2024-11-08 11:37:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453135682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:37:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820824411] [2024-11-08 11:37:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:38,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:37:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:37:38,087 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) [2024-11-08 11:37:38,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:37:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:38,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:37:38,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:37:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 11:37:38,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:37:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 11:37:38,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820824411] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:37:38,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:37:38,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-08 11:37:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944481621] [2024-11-08 11:37:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:38,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:37:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:37:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:37:38,913 INFO L87 Difference]: Start difference. First operand 18029 states and 21739 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:41,882 INFO L93 Difference]: Finished difference Result 49692 states and 60242 transitions. [2024-11-08 11:37:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:37:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-08 11:37:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:41,933 INFO L225 Difference]: With dead ends: 49692 [2024-11-08 11:37:41,933 INFO L226 Difference]: Without dead ends: 30794 [2024-11-08 11:37:41,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:37:41,956 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1069 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:41,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 140 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 11:37:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2024-11-08 11:37:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 30367. [2024-11-08 11:37:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30367 states, 30366 states have (on average 1.168938944872555) internal successors, (35496), 30366 states have internal predecessors, (35496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30367 states to 30367 states and 35496 transitions. [2024-11-08 11:37:42,421 INFO L78 Accepts]: Start accepts. Automaton has 30367 states and 35496 transitions. Word has length 278 [2024-11-08 11:37:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:42,421 INFO L471 AbstractCegarLoop]: Abstraction has 30367 states and 35496 transitions. [2024-11-08 11:37:42,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 30367 states and 35496 transitions. [2024-11-08 11:37:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-08 11:37:42,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:42,427 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:42,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:37:42,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:37:42,632 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:42,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash -595718805, now seen corresponding path program 1 times [2024-11-08 11:37:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251465379] [2024-11-08 11:37:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 11:37:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251465379] [2024-11-08 11:37:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251465379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:43,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174548833] [2024-11-08 11:37:43,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:43,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:43,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:43,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:43,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:43,036 INFO L87 Difference]: Start difference. First operand 30367 states and 35496 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:44,839 INFO L93 Difference]: Finished difference Result 76488 states and 89022 transitions. [2024-11-08 11:37:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2024-11-08 11:37:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:44,894 INFO L225 Difference]: With dead ends: 76488 [2024-11-08 11:37:44,894 INFO L226 Difference]: Without dead ends: 44415 [2024-11-08 11:37:44,925 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 [2024-11-08 11:37:44,926 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 482 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:44,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 612 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44415 states. [2024-11-08 11:37:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44415 to 39724. [2024-11-08 11:37:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39724 states, 39723 states have (on average 1.1442740981295472) internal successors, (45454), 39723 states have internal predecessors, (45454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39724 states to 39724 states and 45454 transitions. [2024-11-08 11:37:45,629 INFO L78 Accepts]: Start accepts. Automaton has 39724 states and 45454 transitions. Word has length 286 [2024-11-08 11:37:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:45,630 INFO L471 AbstractCegarLoop]: Abstraction has 39724 states and 45454 transitions. [2024-11-08 11:37:45,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 39724 states and 45454 transitions. [2024-11-08 11:37:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-08 11:37:45,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:45,638 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:45,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:37:45,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:45,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2036376936, now seen corresponding path program 1 times [2024-11-08 11:37:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:45,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364958197] [2024-11-08 11:37:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 11:37:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364958197] [2024-11-08 11:37:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364958197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:46,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:46,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809776794] [2024-11-08 11:37:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:46,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:46,058 INFO L87 Difference]: Start difference. First operand 39724 states and 45454 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:47,586 INFO L93 Difference]: Finished difference Result 84966 states and 97495 transitions. [2024-11-08 11:37:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-08 11:37:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:47,644 INFO L225 Difference]: With dead ends: 84966 [2024-11-08 11:37:47,644 INFO L226 Difference]: Without dead ends: 45244 [2024-11-08 11:37:47,681 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 [2024-11-08 11:37:47,682 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 372 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:47,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 826 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 11:37:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45244 states. [2024-11-08 11:37:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45244 to 44819. [2024-11-08 11:37:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44819 states, 44818 states have (on average 1.132290597527779) internal successors, (50747), 44818 states have internal predecessors, (50747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44819 states to 44819 states and 50747 transitions. [2024-11-08 11:37:48,362 INFO L78 Accepts]: Start accepts. Automaton has 44819 states and 50747 transitions. Word has length 291 [2024-11-08 11:37:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:48,363 INFO L471 AbstractCegarLoop]: Abstraction has 44819 states and 50747 transitions. [2024-11-08 11:37:48,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 44819 states and 50747 transitions. [2024-11-08 11:37:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-08 11:37:48,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:48,370 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:48,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:37:48,371 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:48,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash 308755155, now seen corresponding path program 1 times [2024-11-08 11:37:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:48,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124744629] [2024-11-08 11:37:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:49,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:49,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124744629] [2024-11-08 11:37:49,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124744629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:49,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:49,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:37:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963554804] [2024-11-08 11:37:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:49,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:37:49,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:37:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:37:49,040 INFO L87 Difference]: Start difference. First operand 44819 states and 50747 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:51,944 INFO L93 Difference]: Finished difference Result 117357 states and 132885 transitions. [2024-11-08 11:37:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:37:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2024-11-08 11:37:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:52,007 INFO L225 Difference]: With dead ends: 117357 [2024-11-08 11:37:52,007 INFO L226 Difference]: Without dead ends: 70839 [2024-11-08 11:37:52,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:37:52,034 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 844 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:52,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 324 Invalid, 3096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:37:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2024-11-08 11:37:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 69510. [2024-11-08 11:37:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69510 states, 69509 states have (on average 1.122976880691709) internal successors, (78057), 69509 states have internal predecessors, (78057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69510 states to 69510 states and 78057 transitions. [2024-11-08 11:37:52,943 INFO L78 Accepts]: Start accepts. Automaton has 69510 states and 78057 transitions. Word has length 314 [2024-11-08 11:37:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:52,944 INFO L471 AbstractCegarLoop]: Abstraction has 69510 states and 78057 transitions. [2024-11-08 11:37:52,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 69510 states and 78057 transitions. [2024-11-08 11:37:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-08 11:37:52,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:52,951 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:52,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:37:52,951 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:52,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1085335230, now seen corresponding path program 1 times [2024-11-08 11:37:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377619503] [2024-11-08 11:37:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 11:37:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377619503] [2024-11-08 11:37:53,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377619503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:53,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:53,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722810471] [2024-11-08 11:37:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:53,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:53,453 INFO L87 Difference]: Start difference. First operand 69510 states and 78057 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:55,342 INFO L93 Difference]: Finished difference Result 149689 states and 168122 transitions. [2024-11-08 11:37:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 329 [2024-11-08 11:37:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:55,570 INFO L225 Difference]: With dead ends: 149689 [2024-11-08 11:37:55,570 INFO L226 Difference]: Without dead ends: 80181 [2024-11-08 11:37:55,600 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 [2024-11-08 11:37:55,601 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 365 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:55,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 769 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80181 states. [2024-11-08 11:37:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80181 to 79318. [2024-11-08 11:37:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79318 states, 79317 states have (on average 1.1088669515992788) internal successors, (87952), 79317 states have internal predecessors, (87952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79318 states to 79318 states and 87952 transitions. [2024-11-08 11:37:56,757 INFO L78 Accepts]: Start accepts. Automaton has 79318 states and 87952 transitions. Word has length 329 [2024-11-08 11:37:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:56,758 INFO L471 AbstractCegarLoop]: Abstraction has 79318 states and 87952 transitions. [2024-11-08 11:37:56,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 79318 states and 87952 transitions. [2024-11-08 11:37:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-08 11:37:56,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:56,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:56,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:37:56,763 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:56,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1319027679, now seen corresponding path program 1 times [2024-11-08 11:37:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125292012] [2024-11-08 11:37:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125292012] [2024-11-08 11:37:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125292012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:37:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303427466] [2024-11-08 11:37:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:57,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:37:57,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:37:57,357 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) [2024-11-08 11:37:57,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:37:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:57,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:37:57,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:37:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:57,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:38:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303427466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:38:00,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:38:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 11:38:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390696742] [2024-11-08 11:38:00,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:38:00,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 11:38:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 11:38:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:38:00,471 INFO L87 Difference]: Start difference. First operand 79318 states and 87952 transitions. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:06,796 INFO L93 Difference]: Finished difference Result 194913 states and 215173 transitions. [2024-11-08 11:38:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 11:38:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2024-11-08 11:38:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:06,913 INFO L225 Difference]: With dead ends: 194913 [2024-11-08 11:38:06,913 INFO L226 Difference]: Without dead ends: 113039 [2024-11-08 11:38:06,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:38:06,934 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 1626 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 8951 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 9651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 8951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:06,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 308 Invalid, 9651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 8951 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 11:38:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113039 states. [2024-11-08 11:38:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113039 to 96757. [2024-11-08 11:38:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96757 states, 96756 states have (on average 1.0954876183389144) internal successors, (105995), 96756 states have internal predecessors, (105995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96757 states to 96757 states and 105995 transitions. [2024-11-08 11:38:08,324 INFO L78 Accepts]: Start accepts. Automaton has 96757 states and 105995 transitions. Word has length 340 [2024-11-08 11:38:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:08,324 INFO L471 AbstractCegarLoop]: Abstraction has 96757 states and 105995 transitions. [2024-11-08 11:38:08,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 96757 states and 105995 transitions. [2024-11-08 11:38:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-08 11:38:08,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:08,331 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:08,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:38:08,535 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 [2024-11-08 11:38:08,536 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:08,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -64556604, now seen corresponding path program 1 times [2024-11-08 11:38:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180075926] [2024-11-08 11:38:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-08 11:38:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180075926] [2024-11-08 11:38:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180075926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:09,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132148642] [2024-11-08 11:38:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:09,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:09,153 INFO L87 Difference]: Start difference. First operand 96757 states and 105995 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:10,884 INFO L93 Difference]: Finished difference Result 198199 states and 217229 transitions. [2024-11-08 11:38:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-11-08 11:38:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:11,006 INFO L225 Difference]: With dead ends: 198199 [2024-11-08 11:38:11,006 INFO L226 Difference]: Without dead ends: 101869 [2024-11-08 11:38:11,074 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 [2024-11-08 11:38:11,075 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 405 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:11,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 729 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 11:38:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101869 states. [2024-11-08 11:38:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101869 to 89502. [2024-11-08 11:38:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89502 states, 89501 states have (on average 1.0941777186847075) internal successors, (97930), 89501 states have internal predecessors, (97930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89502 states to 89502 states and 97930 transitions. [2024-11-08 11:38:12,361 INFO L78 Accepts]: Start accepts. Automaton has 89502 states and 97930 transitions. Word has length 382 [2024-11-08 11:38:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:12,362 INFO L471 AbstractCegarLoop]: Abstraction has 89502 states and 97930 transitions. [2024-11-08 11:38:12,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 89502 states and 97930 transitions. [2024-11-08 11:38:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-08 11:38:12,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:12,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:38:12,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 11:38:12,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:12,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash -943368672, now seen corresponding path program 1 times [2024-11-08 11:38:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:12,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267281882] [2024-11-08 11:38:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:12,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-08 11:38:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267281882] [2024-11-08 11:38:12,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267281882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:12,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:12,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:38:12,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851446022] [2024-11-08 11:38:12,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:12,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:12,622 INFO L87 Difference]: Start difference. First operand 89502 states and 97930 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:13,943 INFO L93 Difference]: Finished difference Result 176864 states and 193520 transitions. [2024-11-08 11:38:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:13,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2024-11-08 11:38:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:14,030 INFO L225 Difference]: With dead ends: 176864 [2024-11-08 11:38:14,031 INFO L226 Difference]: Without dead ends: 87788 [2024-11-08 11:38:14,077 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 [2024-11-08 11:38:14,078 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 616 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:14,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 95 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 11:38:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87788 states. [2024-11-08 11:38:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87788 to 87779. [2024-11-08 11:38:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87779 states, 87778 states have (on average 1.0935428011574655) internal successors, (95989), 87778 states have internal predecessors, (95989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87779 states to 87779 states and 95989 transitions. [2024-11-08 11:38:15,751 INFO L78 Accepts]: Start accepts. Automaton has 87779 states and 95989 transitions. Word has length 433 [2024-11-08 11:38:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:15,752 INFO L471 AbstractCegarLoop]: Abstraction has 87779 states and 95989 transitions. [2024-11-08 11:38:15,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:38:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 87779 states and 95989 transitions. [2024-11-08 11:38:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-08 11:38:15,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:15,758 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:15,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 11:38:15,758 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:15,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 340482704, now seen corresponding path program 1 times [2024-11-08 11:38:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906186424] [2024-11-08 11:38:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-08 11:38:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:16,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906186424] [2024-11-08 11:38:16,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906186424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071051318] [2024-11-08 11:38:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:16,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:16,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:38:16,630 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) [2024-11-08 11:38:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:38:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:16,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 11:38:16,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:38:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-08 11:38:17,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-08 11:38:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071051318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:38:17,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:38:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-08 11:38:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774422145] [2024-11-08 11:38:17,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:38:17,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 11:38:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 11:38:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:38:17,945 INFO L87 Difference]: Start difference. First operand 87779 states and 95989 transitions. Second operand has 9 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)