./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/Problem16_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 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:24:56,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:24:56,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:24:56,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:24:56,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:24:56,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:24:56,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:24:56,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:24:56,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:24:56,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:24:56,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:24:56,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:24:56,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:24:56,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:24:56,373 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:24:56,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:24:56,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:24:56,374 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:24:56,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:24:56,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:24:56,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:24:56,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:24:56,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:24:56,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:24:56,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:24:56,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:24:56,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:24:56,382 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:24:56,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:24:56,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:24:56,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:24:56,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:24:56,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:24:56,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:24:56,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:24:56,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:24:56,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:24:56,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:24:56,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:24:56,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:24:56,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:24:56,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:24:56,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc [2024-11-21 22:24:56,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:24:56,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:24:56,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:24:56,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:24:56,614 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:24:56,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-11-21 22:24:57,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:24:58,324 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:24:58,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-11-21 22:24:58,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ead1637/3f9a0bd53c2e42618a0f818db865656f/FLAGa3608e0b9 [2024-11-21 22:24:58,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ead1637/3f9a0bd53c2e42618a0f818db865656f [2024-11-21 22:24:58,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:24:58,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:24:58,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:24:58,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:24:58,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:24:58,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:58" (1/1) ... [2024-11-21 22:24:58,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45122222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:58, skipping insertion in model container [2024-11-21 22:24:58,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:58" (1/1) ... [2024-11-21 22:24:58,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:24:58,805 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/Problem16_label00.c[2412,2425] [2024-11-21 22:24:59,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:24:59,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:24:59,368 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/Problem16_label00.c[2412,2425] [2024-11-21 22:24:59,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:24:59,551 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:24:59,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59 WrapperNode [2024-11-21 22:24:59,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:24:59,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:24:59,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:24:59,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:24:59,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,660 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-21 22:24:59,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:24:59,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:24:59,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:24:59,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:24:59,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,737 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]. [2024-11-21 22:24:59,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:24:59,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:24:59,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:24:59,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:24:59,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (1/1) ... [2024-11-21 22:24:59,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:24:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:24:59,869 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) [2024-11-21 22:24:59,874 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 [2024-11-21 22:24:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:24:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:24:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:24:59,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:24:59,965 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:24:59,966 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:25:01,496 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-21 22:25:01,496 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:25:01,512 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:25:01,513 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:25:01,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:01 BoogieIcfgContainer [2024-11-21 22:25:01,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:25:01,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:25:01,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:25:01,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:25:01,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:24:58" (1/3) ... [2024-11-21 22:25:01,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:01, skipping insertion in model container [2024-11-21 22:25:01,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:59" (2/3) ... [2024-11-21 22:25:01,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:01, skipping insertion in model container [2024-11-21 22:25:01,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:01" (3/3) ... [2024-11-21 22:25:01,520 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2024-11-21 22:25:01,533 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:25:01,533 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:25:01,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:25:01,589 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;@631e50e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:25:01,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:25:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-21 22:25:01,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:01,601 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] [2024-11-21 22:25:01,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:01,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2024-11-21 22:25:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:01,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504484324] [2024-11-21 22:25:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:01,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504484324] [2024-11-21 22:25:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504484324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:01,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191908315] [2024-11-21 22:25:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:01,826 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:03,237 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2024-11-21 22:25:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-21 22:25:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:03,257 INFO L225 Difference]: With dead ends: 1122 [2024-11-21 22:25:03,257 INFO L226 Difference]: Without dead ends: 662 [2024-11-21 22:25:03,261 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 [2024-11-21 22:25:03,265 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 339 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:03,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:25:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-21 22:25:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-21 22:25:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2024-11-21 22:25:03,344 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 21 [2024-11-21 22:25:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:03,344 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2024-11-21 22:25:03,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2024-11-21 22:25:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-21 22:25:03,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:03,350 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-21 22:25:03,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:25:03,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:03,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 765377619, now seen corresponding path program 1 times [2024-11-21 22:25:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705904930] [2024-11-21 22:25:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:03,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705904930] [2024-11-21 22:25:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705904930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256470241] [2024-11-21 22:25:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:03,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:03,574 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:04,549 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2024-11-21 22:25:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-11-21 22:25:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:04,556 INFO L225 Difference]: With dead ends: 1651 [2024-11-21 22:25:04,556 INFO L226 Difference]: Without dead ends: 991 [2024-11-21 22:25:04,558 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 [2024-11-21 22:25:04,559 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:04,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:25:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-21 22:25:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-21 22:25:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2024-11-21 22:25:04,579 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 92 [2024-11-21 22:25:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:04,579 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2024-11-21 22:25:04,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2024-11-21 22:25:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-21 22:25:04,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:04,582 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-21 22:25:04,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:25:04,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:04,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash -660185960, now seen corresponding path program 1 times [2024-11-21 22:25:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:04,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394756516] [2024-11-21 22:25:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394756516] [2024-11-21 22:25:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394756516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819531563] [2024-11-21 22:25:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:04,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:04,678 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:06,399 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2024-11-21 22:25:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:06,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-21 22:25:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:06,405 INFO L225 Difference]: With dead ends: 2967 [2024-11-21 22:25:06,405 INFO L226 Difference]: Without dead ends: 1978 [2024-11-21 22:25:06,406 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 [2024-11-21 22:25:06,407 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:06,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 209 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:25:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-11-21 22:25:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2024-11-21 22:25:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2468386444107233) internal successors, (2465), 1977 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2465 transitions. [2024-11-21 22:25:06,433 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2465 transitions. Word has length 93 [2024-11-21 22:25:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:06,434 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2465 transitions. [2024-11-21 22:25:06,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2465 transitions. [2024-11-21 22:25:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-21 22:25:06,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:06,436 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-21 22:25:06,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:25:06,437 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:06,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 986787195, now seen corresponding path program 1 times [2024-11-21 22:25:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830590012] [2024-11-21 22:25:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830590012] [2024-11-21 22:25:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830590012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634215718] [2024-11-21 22:25:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:06,665 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) [2024-11-21 22:25:06,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:25:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:06,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:25:06,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:06,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:25:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634215718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:25:07,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:25:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-21 22:25:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531384893] [2024-11-21 22:25:07,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:25:07,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 22:25:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 22:25:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:25:07,655 INFO L87 Difference]: Start difference. First operand 1978 states and 2465 transitions. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:11,882 INFO L93 Difference]: Finished difference Result 11523 states and 14992 transitions. [2024-11-21 22:25:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 22:25:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-21 22:25:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:11,922 INFO L225 Difference]: With dead ends: 11523 [2024-11-21 22:25:11,923 INFO L226 Difference]: Without dead ends: 9547 [2024-11-21 22:25:11,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:11,934 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2681 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 1763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1763 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:11,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2681 Valid, 35 Invalid, 5335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1763 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-21 22:25:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2024-11-21 22:25:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6913. [2024-11-21 22:25:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6913 states, 6912 states have (on average 1.2335069444444444) internal successors, (8526), 6912 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 8526 transitions. [2024-11-21 22:25:12,079 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 8526 transitions. Word has length 108 [2024-11-21 22:25:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:12,080 INFO L471 AbstractCegarLoop]: Abstraction has 6913 states and 8526 transitions. [2024-11-21 22:25:12,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 8526 transitions. [2024-11-21 22:25:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-21 22:25:12,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:12,089 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:12,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 22:25:12,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:12,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:12,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:12,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1783700334, now seen corresponding path program 1 times [2024-11-21 22:25:12,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:12,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260067248] [2024-11-21 22:25:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:12,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260067248] [2024-11-21 22:25:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260067248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:12,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:12,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434319060] [2024-11-21 22:25:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:12,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:12,788 INFO L87 Difference]: Start difference. First operand 6913 states and 8526 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:13,867 INFO L93 Difference]: Finished difference Result 14153 states and 17397 transitions. [2024-11-21 22:25:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2024-11-21 22:25:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:13,884 INFO L225 Difference]: With dead ends: 14153 [2024-11-21 22:25:13,885 INFO L226 Difference]: Without dead ends: 7242 [2024-11-21 22:25:13,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:25:13,893 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 232 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:13,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 322 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:25:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2024-11-21 22:25:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 7242. [2024-11-21 22:25:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 1.223726004695484) internal successors, (8861), 7241 states have internal predecessors, (8861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 8861 transitions. [2024-11-21 22:25:13,984 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 8861 transitions. Word has length 281 [2024-11-21 22:25:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:13,984 INFO L471 AbstractCegarLoop]: Abstraction has 7242 states and 8861 transitions. [2024-11-21 22:25:13,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 8861 transitions. [2024-11-21 22:25:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-21 22:25:13,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:13,988 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:25:13,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1503963873, now seen corresponding path program 1 times [2024-11-21 22:25:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215618635] [2024-11-21 22:25:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215618635] [2024-11-21 22:25:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215618635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:14,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-21 22:25:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307632208] [2024-11-21 22:25:14,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:14,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 22:25:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 22:25:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:14,403 INFO L87 Difference]: Start difference. First operand 7242 states and 8861 transitions. Second operand has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:15,849 INFO L93 Difference]: Finished difference Result 14875 states and 18173 transitions. [2024-11-21 22:25:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 22:25:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 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 319 [2024-11-21 22:25:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:15,867 INFO L225 Difference]: With dead ends: 14875 [2024-11-21 22:25:15,867 INFO L226 Difference]: Without dead ends: 7631 [2024-11-21 22:25:15,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:15,878 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 292 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:15,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 300 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:25:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2024-11-21 22:25:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 7591. [2024-11-21 22:25:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 7590 states have (on average 1.087878787878788) internal successors, (8257), 7590 states have internal predecessors, (8257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 8257 transitions. [2024-11-21 22:25:15,972 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 8257 transitions. Word has length 319 [2024-11-21 22:25:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:15,973 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 8257 transitions. [2024-11-21 22:25:15,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 8257 transitions. [2024-11-21 22:25:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-21 22:25:15,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:15,978 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:15,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:25:15,978 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:15,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1132127680, now seen corresponding path program 1 times [2024-11-21 22:25:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:15,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989556496] [2024-11-21 22:25:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-21 22:25:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989556496] [2024-11-21 22:25:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989556496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:16,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71448547] [2024-11-21 22:25:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:16,528 INFO L87 Difference]: Start difference. First operand 7591 states and 8257 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:17,721 INFO L93 Difference]: Finished difference Result 16518 states and 18091 transitions. [2024-11-21 22:25:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:17,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 488 [2024-11-21 22:25:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:17,734 INFO L225 Difference]: With dead ends: 16518 [2024-11-21 22:25:17,734 INFO L226 Difference]: Without dead ends: 9258 [2024-11-21 22:25:17,741 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 [2024-11-21 22:25:17,742 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 402 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:17,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 78 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-21 22:25:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2024-11-21 22:25:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 9236. [2024-11-21 22:25:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 9235 states have (on average 1.0904168922577153) internal successors, (10070), 9235 states have internal predecessors, (10070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 10070 transitions. [2024-11-21 22:25:17,867 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 10070 transitions. Word has length 488 [2024-11-21 22:25:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:17,868 INFO L471 AbstractCegarLoop]: Abstraction has 9236 states and 10070 transitions. [2024-11-21 22:25:17,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 10070 transitions. [2024-11-21 22:25:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-21 22:25:17,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:17,874 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:25:17,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:25:17,875 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:17,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2062017978, now seen corresponding path program 1 times [2024-11-21 22:25:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819393533] [2024-11-21 22:25:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-21 22:25:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819393533] [2024-11-21 22:25:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819393533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348281149] [2024-11-21 22:25:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:18,208 INFO L87 Difference]: Start difference. First operand 9236 states and 10070 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:19,083 INFO L93 Difference]: Finished difference Result 20137 states and 22017 transitions. [2024-11-21 22:25:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 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 524 [2024-11-21 22:25:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:19,098 INFO L225 Difference]: With dead ends: 20137 [2024-11-21 22:25:19,099 INFO L226 Difference]: Without dead ends: 11232 [2024-11-21 22:25:19,107 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 [2024-11-21 22:25:19,107 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 68 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:19,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 81 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11232 states. [2024-11-21 22:25:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11232 to 11210. [2024-11-21 22:25:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 11209 states have (on average 1.0888571683468642) internal successors, (12205), 11209 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 12205 transitions. [2024-11-21 22:25:19,207 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 12205 transitions. Word has length 524 [2024-11-21 22:25:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:19,208 INFO L471 AbstractCegarLoop]: Abstraction has 11210 states and 12205 transitions. [2024-11-21 22:25:19,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 12205 transitions. [2024-11-21 22:25:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-21 22:25:19,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:19,214 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:25:19,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:25:19,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:19,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1233229018, now seen corresponding path program 1 times [2024-11-21 22:25:19,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:19,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649033784] [2024-11-21 22:25:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:19,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:20,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649033784] [2024-11-21 22:25:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649033784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675760938] [2024-11-21 22:25:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:20,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:20,147 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) [2024-11-21 22:25:20,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:25:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:20,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 22:25:20,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:21,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:25:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:25:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675760938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:25:22,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:25:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-21 22:25:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468574811] [2024-11-21 22:25:22,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:25:22,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 22:25:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 22:25:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-21 22:25:22,135 INFO L87 Difference]: Start difference. First operand 11210 states and 12205 transitions. Second operand has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:25,576 INFO L93 Difference]: Finished difference Result 27781 states and 30609 transitions. [2024-11-21 22:25:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 22:25:25,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 0 states have call successors, (0), 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 532 [2024-11-21 22:25:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:25,596 INFO L225 Difference]: With dead ends: 27781 [2024-11-21 22:25:25,597 INFO L226 Difference]: Without dead ends: 17192 [2024-11-21 22:25:25,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-21 22:25:25,608 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1040 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5871 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 6445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 5871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:25,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 90 Invalid, 6445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 5871 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-21 22:25:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17192 states. [2024-11-21 22:25:25,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17192 to 14171. [2024-11-21 22:25:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14171 states, 14170 states have (on average 1.0829216654904728) internal successors, (15345), 14170 states have internal predecessors, (15345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14171 states to 14171 states and 15345 transitions. [2024-11-21 22:25:25,799 INFO L78 Accepts]: Start accepts. Automaton has 14171 states and 15345 transitions. Word has length 532 [2024-11-21 22:25:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:25,799 INFO L471 AbstractCegarLoop]: Abstraction has 14171 states and 15345 transitions. [2024-11-21 22:25:25,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 14171 states and 15345 transitions. [2024-11-21 22:25:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-11-21 22:25:25,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:25,806 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:25,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 22:25:26,006 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,SelfDestructingSolverStorable8 [2024-11-21 22:25:26,007 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:26,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 195073257, now seen corresponding path program 1 times [2024-11-21 22:25:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626187817] [2024-11-21 22:25:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-21 22:25:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:26,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626187817] [2024-11-21 22:25:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626187817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:26,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280763098] [2024-11-21 22:25:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:26,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:26,521 INFO L87 Difference]: Start difference. First operand 14171 states and 15345 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:27,323 INFO L93 Difference]: Finished difference Result 30972 states and 33809 transitions. [2024-11-21 22:25:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 663 [2024-11-21 22:25:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:27,340 INFO L225 Difference]: With dead ends: 30972 [2024-11-21 22:25:27,341 INFO L226 Difference]: Without dead ends: 17790 [2024-11-21 22:25:27,352 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 [2024-11-21 22:25:27,353 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 225 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:27,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 41 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17790 states. [2024-11-21 22:25:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17790 to 17790. [2024-11-21 22:25:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17790 states, 17789 states have (on average 1.0859519928045422) internal successors, (19318), 17789 states have internal predecessors, (19318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17790 states to 17790 states and 19318 transitions. [2024-11-21 22:25:27,493 INFO L78 Accepts]: Start accepts. Automaton has 17790 states and 19318 transitions. Word has length 663 [2024-11-21 22:25:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:27,495 INFO L471 AbstractCegarLoop]: Abstraction has 17790 states and 19318 transitions. [2024-11-21 22:25:27,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 17790 states and 19318 transitions. [2024-11-21 22:25:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-21 22:25:27,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:27,505 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:25:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:25:27,506 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1097089672, now seen corresponding path program 1 times [2024-11-21 22:25:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738270505] [2024-11-21 22:25:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:25:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738270505] [2024-11-21 22:25:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738270505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:27,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:27,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963443458] [2024-11-21 22:25:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:27,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:27,954 INFO L87 Difference]: Start difference. First operand 17790 states and 19318 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:28,782 INFO L93 Difference]: Finished difference Result 38868 states and 42380 transitions. [2024-11-21 22:25:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 697 [2024-11-21 22:25:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:28,806 INFO L225 Difference]: With dead ends: 38868 [2024-11-21 22:25:28,806 INFO L226 Difference]: Without dead ends: 22067 [2024-11-21 22:25:28,819 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 [2024-11-21 22:25:28,820 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 155 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:28,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 438 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22067 states. [2024-11-21 22:25:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22067 to 20751. [2024-11-21 22:25:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 20750 states have (on average 1.078698795180723) internal successors, (22383), 20750 states have internal predecessors, (22383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 22383 transitions. [2024-11-21 22:25:28,993 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 22383 transitions. Word has length 697 [2024-11-21 22:25:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:28,994 INFO L471 AbstractCegarLoop]: Abstraction has 20751 states and 22383 transitions. [2024-11-21 22:25:28,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 22383 transitions. [2024-11-21 22:25:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2024-11-21 22:25:29,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:29,006 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:29,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:25:29,007 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:29,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 792755469, now seen corresponding path program 1 times [2024-11-21 22:25:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:29,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952642577] [2024-11-21 22:25:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:29,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-21 22:25:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952642577] [2024-11-21 22:25:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952642577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:29,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:29,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:29,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857491974] [2024-11-21 22:25:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:29,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:29,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:29,766 INFO L87 Difference]: Start difference. First operand 20751 states and 22383 transitions. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:30,871 INFO L93 Difference]: Finished difference Result 41171 states and 44433 transitions. [2024-11-21 22:25:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:30,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 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 783 [2024-11-21 22:25:30,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:30,890 INFO L225 Difference]: With dead ends: 41171 [2024-11-21 22:25:30,890 INFO L226 Difference]: Without dead ends: 20751 [2024-11-21 22:25:30,903 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 [2024-11-21 22:25:30,904 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 268 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:30,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 124 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:25:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-21 22:25:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 20751. [2024-11-21 22:25:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 20750 states have (on average 1.0784578313253013) internal successors, (22378), 20750 states have internal predecessors, (22378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 22378 transitions. [2024-11-21 22:25:31,066 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 22378 transitions. Word has length 783 [2024-11-21 22:25:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:31,066 INFO L471 AbstractCegarLoop]: Abstraction has 20751 states and 22378 transitions. [2024-11-21 22:25:31,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 22378 transitions. [2024-11-21 22:25:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2024-11-21 22:25:31,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:31,078 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:31,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:25:31,078 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:31,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1236644673, now seen corresponding path program 1 times [2024-11-21 22:25:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637677438] [2024-11-21 22:25:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 377 proven. 860 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-21 22:25:32,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:32,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637677438] [2024-11-21 22:25:32,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637677438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:32,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195827559] [2024-11-21 22:25:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:32,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:32,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:32,219 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) [2024-11-21 22:25:32,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:25:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:32,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:25:32,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 770 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-21 22:25:32,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195827559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-21 22:25:32,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784194344] [2024-11-21 22:25:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:32,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:32,683 INFO L87 Difference]: Start difference. First operand 20751 states and 22378 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:33,393 INFO L93 Difference]: Finished difference Result 40513 states and 43761 transitions. [2024-11-21 22:25:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 844 [2024-11-21 22:25:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:33,413 INFO L225 Difference]: With dead ends: 40513 [2024-11-21 22:25:33,413 INFO L226 Difference]: Without dead ends: 20751 [2024-11-21 22:25:33,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:33,426 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 165 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:33,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 430 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-21 22:25:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19764. [2024-11-21 22:25:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0736224257450793) internal successors, (21218), 19763 states have internal predecessors, (21218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 21218 transitions. [2024-11-21 22:25:33,588 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 21218 transitions. Word has length 844 [2024-11-21 22:25:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:33,589 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 21218 transitions. [2024-11-21 22:25:33,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 21218 transitions. [2024-11-21 22:25:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2024-11-21 22:25:33,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:33,601 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:33,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 22:25:33,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:33,802 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:33,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1236728044, now seen corresponding path program 1 times [2024-11-21 22:25:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:33,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789324297] [2024-11-21 22:25:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1508 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-21 22:25:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789324297] [2024-11-21 22:25:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789324297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:34,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282986031] [2024-11-21 22:25:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:34,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:34,204 INFO L87 Difference]: Start difference. First operand 19764 states and 21218 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:34,949 INFO L93 Difference]: Finished difference Result 44132 states and 47644 transitions. [2024-11-21 22:25:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 844 [2024-11-21 22:25:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:34,973 INFO L225 Difference]: With dead ends: 44132 [2024-11-21 22:25:34,974 INFO L226 Difference]: Without dead ends: 25357 [2024-11-21 22:25:34,989 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 [2024-11-21 22:25:34,990 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 273 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:34,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 430 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25357 states. [2024-11-21 22:25:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25357 to 24370. [2024-11-21 22:25:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24370 states, 24369 states have (on average 1.0633591858508762) internal successors, (25913), 24369 states have internal predecessors, (25913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24370 states to 24370 states and 25913 transitions. [2024-11-21 22:25:35,180 INFO L78 Accepts]: Start accepts. Automaton has 24370 states and 25913 transitions. Word has length 844 [2024-11-21 22:25:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:35,181 INFO L471 AbstractCegarLoop]: Abstraction has 24370 states and 25913 transitions. [2024-11-21 22:25:35,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 24370 states and 25913 transitions. [2024-11-21 22:25:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2024-11-21 22:25:35,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:35,191 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:35,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:25:35,191 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:35,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2036459738, now seen corresponding path program 1 times [2024-11-21 22:25:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986427069] [2024-11-21 22:25:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 814 proven. 258 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-21 22:25:36,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986427069] [2024-11-21 22:25:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986427069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145367144] [2024-11-21 22:25:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:36,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:25:36,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 22:25:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:36,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:25:36,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2024-11-21 22:25:36,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145367144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:36,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:36,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-21 22:25:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960477141] [2024-11-21 22:25:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:36,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:36,372 INFO L87 Difference]: Start difference. First operand 24370 states and 25913 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:37,126 INFO L93 Difference]: Finished difference Result 51370 states and 54743 transitions. [2024-11-21 22:25:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 877 [2024-11-21 22:25:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:37,151 INFO L225 Difference]: With dead ends: 51370 [2024-11-21 22:25:37,151 INFO L226 Difference]: Without dead ends: 27989 [2024-11-21 22:25:37,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:37,165 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 344 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:37,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 384 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27989 states. [2024-11-21 22:25:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27989 to 27002. [2024-11-21 22:25:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27002 states, 27001 states have (on average 1.0619236324580572) internal successors, (28673), 27001 states have internal predecessors, (28673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27002 states to 27002 states and 28673 transitions. [2024-11-21 22:25:37,371 INFO L78 Accepts]: Start accepts. Automaton has 27002 states and 28673 transitions. Word has length 877 [2024-11-21 22:25:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:37,371 INFO L471 AbstractCegarLoop]: Abstraction has 27002 states and 28673 transitions. [2024-11-21 22:25:37,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 27002 states and 28673 transitions. [2024-11-21 22:25:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2024-11-21 22:25:37,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:37,384 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:37,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 22:25:37,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-21 22:25:37,589 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:37,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1187312480, now seen corresponding path program 1 times [2024-11-21 22:25:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935945367] [2024-11-21 22:25:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:37,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1187 proven. 258 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-21 22:25:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935945367] [2024-11-21 22:25:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935945367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343591688] [2024-11-21 22:25:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:38,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:38,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:25:38,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 22:25:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:39,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:25:39,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1350 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-21 22:25:39,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343591688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-21 22:25:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780730977] [2024-11-21 22:25:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:39,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:39,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:39,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:39,361 INFO L87 Difference]: Start difference. First operand 27002 states and 28673 transitions. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:40,105 INFO L93 Difference]: Finished difference Result 54989 states and 58421 transitions. [2024-11-21 22:25:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:40,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 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 1016 [2024-11-21 22:25:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:40,130 INFO L225 Difference]: With dead ends: 54989 [2024-11-21 22:25:40,131 INFO L226 Difference]: Without dead ends: 28976 [2024-11-21 22:25:40,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:40,147 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:40,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 435 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2024-11-21 22:25:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 28318. [2024-11-21 22:25:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28318 states, 28317 states have (on average 1.0529363986297984) internal successors, (29816), 28317 states have internal predecessors, (29816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28318 states to 28318 states and 29816 transitions. [2024-11-21 22:25:40,368 INFO L78 Accepts]: Start accepts. Automaton has 28318 states and 29816 transitions. Word has length 1016 [2024-11-21 22:25:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:40,369 INFO L471 AbstractCegarLoop]: Abstraction has 28318 states and 29816 transitions. [2024-11-21 22:25:40,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 28318 states and 29816 transitions. [2024-11-21 22:25:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2024-11-21 22:25:40,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:40,383 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:40,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 22:25:40,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-21 22:25:40,583 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:40,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1156480900, now seen corresponding path program 1 times [2024-11-21 22:25:40,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64681187] [2024-11-21 22:25:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 1374 proven. 168 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-21 22:25:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64681187] [2024-11-21 22:25:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64681187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018326815] [2024-11-21 22:25:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:41,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:25:41,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 22:25:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:41,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:25:41,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2024-11-21 22:25:41,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:41,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018326815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:41,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:41,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-21 22:25:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971975833] [2024-11-21 22:25:41,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:41,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:41,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:41,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:41,696 INFO L87 Difference]: Start difference. First operand 28318 states and 29816 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:42,390 INFO L93 Difference]: Finished difference Result 54989 states and 57968 transitions. [2024-11-21 22:25:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 1063 [2024-11-21 22:25:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:42,417 INFO L225 Difference]: With dead ends: 54989 [2024-11-21 22:25:42,417 INFO L226 Difference]: Without dead ends: 27989 [2024-11-21 22:25:42,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:42,520 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 201 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:42,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 372 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27989 states. [2024-11-21 22:25:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27989 to 26344. [2024-11-21 22:25:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26344 states, 26343 states have (on average 1.0412633337129409) internal successors, (27430), 26343 states have internal predecessors, (27430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26344 states to 26344 states and 27430 transitions. [2024-11-21 22:25:42,729 INFO L78 Accepts]: Start accepts. Automaton has 26344 states and 27430 transitions. Word has length 1063 [2024-11-21 22:25:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:42,730 INFO L471 AbstractCegarLoop]: Abstraction has 26344 states and 27430 transitions. [2024-11-21 22:25:42,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26344 states and 27430 transitions. [2024-11-21 22:25:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2024-11-21 22:25:42,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:42,743 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:42,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 22:25:42,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-21 22:25:42,944 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:42,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 677401845, now seen corresponding path program 1 times [2024-11-21 22:25:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740057447] [2024-11-21 22:25:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1208 proven. 139 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2024-11-21 22:25:44,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740057447] [2024-11-21 22:25:44,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740057447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731711618] [2024-11-21 22:25:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:44,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:25:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 22:25:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:44,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:25:44,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1623 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-21 22:25:44,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731711618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:44,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-21 22:25:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313483922] [2024-11-21 22:25:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:44,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:25:44,993 INFO L87 Difference]: Start difference. First operand 26344 states and 27430 transitions. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:45,743 INFO L93 Difference]: Finished difference Result 50383 states and 52460 transitions. [2024-11-21 22:25:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 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 1131 [2024-11-21 22:25:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:45,769 INFO L225 Difference]: With dead ends: 50383 [2024-11-21 22:25:45,769 INFO L226 Difference]: Without dead ends: 25357 [2024-11-21 22:25:45,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:25:45,784 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 86 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:45,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 438 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25357 states. [2024-11-21 22:25:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25357 to 24041. [2024-11-21 22:25:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24041 states, 24040 states have (on average 1.0278702163061564) internal successors, (24710), 24040 states have internal predecessors, (24710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24041 states to 24041 states and 24710 transitions. [2024-11-21 22:25:46,101 INFO L78 Accepts]: Start accepts. Automaton has 24041 states and 24710 transitions. Word has length 1131 [2024-11-21 22:25:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:46,105 INFO L471 AbstractCegarLoop]: Abstraction has 24041 states and 24710 transitions. [2024-11-21 22:25:46,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 24041 states and 24710 transitions. [2024-11-21 22:25:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2024-11-21 22:25:46,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:46,117 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:46,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 22:25:46,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:46,318 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:46,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1648615078, now seen corresponding path program 1 times [2024-11-21 22:25:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082009614] [2024-11-21 22:25:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1366 proven. 139 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-11-21 22:25:47,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082009614] [2024-11-21 22:25:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082009614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061310996] [2024-11-21 22:25:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:47,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:47,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:25:47,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 22:25:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:47,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 22:25:47,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 745 proven. 19 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-21 22:25:49,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:25:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-21 22:25:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061310996] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:25:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-21 22:25:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108183976] [2024-11-21 22:25:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:49,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:49,386 INFO L87 Difference]: Start difference. First operand 24041 states and 24710 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:50,306 INFO L93 Difference]: Finished difference Result 25049 states and 25727 transitions. [2024-11-21 22:25:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 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 1174 [2024-11-21 22:25:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:50,326 INFO L225 Difference]: With dead ends: 25049 [2024-11-21 22:25:50,326 INFO L226 Difference]: Without dead ends: 25028 [2024-11-21 22:25:50,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2351 GetRequests, 2344 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:25:50,332 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 512 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:50,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 17 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:25:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2024-11-21 22:25:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 24041. [2024-11-21 22:25:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24041 states, 24040 states have (on average 1.0277454242928452) internal successors, (24707), 24040 states have internal predecessors, (24707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24041 states to 24041 states and 24707 transitions. [2024-11-21 22:25:50,518 INFO L78 Accepts]: Start accepts. Automaton has 24041 states and 24707 transitions. Word has length 1174 [2024-11-21 22:25:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:50,518 INFO L471 AbstractCegarLoop]: Abstraction has 24041 states and 24707 transitions. [2024-11-21 22:25:50,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 24041 states and 24707 transitions. [2024-11-21 22:25:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1387 [2024-11-21 22:25:50,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:50,536 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:50,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 22:25:50,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:50,742 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:50,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1355376705, now seen corresponding path program 1 times [2024-11-21 22:25:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2958317] [2024-11-21 22:25:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2024-11-21 22:25:51,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2958317] [2024-11-21 22:25:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2958317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930973076] [2024-11-21 22:25:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:51,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:51,391 INFO L87 Difference]: Start difference. First operand 24041 states and 24707 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:52,125 INFO L93 Difference]: Finished difference Result 49067 states and 50506 transitions. [2024-11-21 22:25:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 1386 [2024-11-21 22:25:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:52,147 INFO L225 Difference]: With dead ends: 49067 [2024-11-21 22:25:52,147 INFO L226 Difference]: Without dead ends: 25686 [2024-11-21 22:25:52,162 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 [2024-11-21 22:25:52,162 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 321 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:52,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 418 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25686 states. [2024-11-21 22:25:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25686 to 23383. [2024-11-21 22:25:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23383 states, 23382 states have (on average 1.0244204943973998) internal successors, (23953), 23382 states have internal predecessors, (23953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 23953 transitions. [2024-11-21 22:25:52,359 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 23953 transitions. Word has length 1386 [2024-11-21 22:25:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:52,360 INFO L471 AbstractCegarLoop]: Abstraction has 23383 states and 23953 transitions. [2024-11-21 22:25:52,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 23953 transitions. [2024-11-21 22:25:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2024-11-21 22:25:52,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:52,380 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:52,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-21 22:25:52,380 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:52,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash 209483619, now seen corresponding path program 1 times [2024-11-21 22:25:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864287632] [2024-11-21 22:25:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 4305 trivial. 0 not checked. [2024-11-21 22:25:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864287632] [2024-11-21 22:25:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864287632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052092368] [2024-11-21 22:25:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:53,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:53,305 INFO L87 Difference]: Start difference. First operand 23383 states and 23953 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:54,105 INFO L93 Difference]: Finished difference Result 44132 states and 45247 transitions. [2024-11-21 22:25:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 1559 [2024-11-21 22:25:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:54,124 INFO L225 Difference]: With dead ends: 44132 [2024-11-21 22:25:54,124 INFO L226 Difference]: Without dead ends: 20751 [2024-11-21 22:25:54,138 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 [2024-11-21 22:25:54,139 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 316 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:54,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 422 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-21 22:25:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19764. [2024-11-21 22:25:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0177604614684006) internal successors, (20114), 19763 states have internal predecessors, (20114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20114 transitions. [2024-11-21 22:25:54,366 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20114 transitions. Word has length 1559 [2024-11-21 22:25:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:54,367 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20114 transitions. [2024-11-21 22:25:54,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20114 transitions. [2024-11-21 22:25:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1766 [2024-11-21 22:25:54,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:54,409 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:54,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-21 22:25:54,410 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:54,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1312999702, now seen corresponding path program 1 times [2024-11-21 22:25:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874082027] [2024-11-21 22:25:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 3688 proven. 0 refuted. 0 times theorem prover too weak. 1602 trivial. 0 not checked. [2024-11-21 22:25:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874082027] [2024-11-21 22:25:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874082027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:56,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:25:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158139793] [2024-11-21 22:25:56,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:56,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:56,198 INFO L87 Difference]: Start difference. First operand 19764 states and 20114 transitions. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:57,042 INFO L93 Difference]: Finished difference Result 35594 states and 36262 transitions. [2024-11-21 22:25:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 22:25:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 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 1765 [2024-11-21 22:25:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:57,061 INFO L225 Difference]: With dead ends: 35594 [2024-11-21 22:25:57,061 INFO L226 Difference]: Without dead ends: 19780 [2024-11-21 22:25:57,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:25:57,070 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:57,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 446 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19780 states. [2024-11-21 22:25:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19780 to 19764. [2024-11-21 22:25:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0175580630471082) internal successors, (20110), 19763 states have internal predecessors, (20110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20110 transitions. [2024-11-21 22:25:57,236 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20110 transitions. Word has length 1765 [2024-11-21 22:25:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:57,237 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20110 transitions. [2024-11-21 22:25:57,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20110 transitions. [2024-11-21 22:25:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1896 [2024-11-21 22:25:57,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:57,264 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:57,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-21 22:25:57,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:57,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1081445396, now seen corresponding path program 1 times [2024-11-21 22:25:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:57,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181055182] [2024-11-21 22:25:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:57,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6406 backedges. 4253 proven. 0 refuted. 0 times theorem prover too weak. 2153 trivial. 0 not checked. [2024-11-21 22:25:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181055182] [2024-11-21 22:25:58,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181055182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:58,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:25:58,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721904341] [2024-11-21 22:25:58,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:58,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:58,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:58,852 INFO L87 Difference]: Start difference. First operand 19764 states and 20110 transitions. Second operand has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:59,677 INFO L93 Difference]: Finished difference Result 35907 states and 36572 transitions. [2024-11-21 22:25:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:59,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 1895 [2024-11-21 22:25:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:59,695 INFO L225 Difference]: With dead ends: 35907 [2024-11-21 22:25:59,696 INFO L226 Difference]: Without dead ends: 20093 [2024-11-21 22:25:59,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:25:59,705 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 120 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:59,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 567 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-21 22:25:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 20093. [2024-11-21 22:25:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 20092 states have (on average 1.0173203264981088) internal successors, (20440), 20092 states have internal predecessors, (20440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 20440 transitions. [2024-11-21 22:25:59,865 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 20440 transitions. Word has length 1895 [2024-11-21 22:25:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:59,866 INFO L471 AbstractCegarLoop]: Abstraction has 20093 states and 20440 transitions. [2024-11-21 22:25:59,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 20440 transitions. [2024-11-21 22:25:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1998 [2024-11-21 22:25:59,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:59,891 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-21 22:25:59,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-21 22:25:59,892 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:59,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1600763632, now seen corresponding path program 1 times [2024-11-21 22:25:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120983742] [2024-11-21 22:25:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7045 backedges. 5524 proven. 14 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2024-11-21 22:26:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120983742] [2024-11-21 22:26:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120983742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:26:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471758820] [2024-11-21 22:26:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:26:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:26:03,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:26:03,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 22:26:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:03,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:26:03,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:26:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7045 backedges. 4028 proven. 0 refuted. 0 times theorem prover too weak. 3017 trivial. 0 not checked. [2024-11-21 22:26:03,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:26:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471758820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:26:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:26:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-21 22:26:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819885868] [2024-11-21 22:26:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:03,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:03,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:26:03,949 INFO L87 Difference]: Start difference. First operand 20093 states and 20440 transitions. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:04,653 INFO L93 Difference]: Finished difference Result 36236 states and 36898 transitions. [2024-11-21 22:26:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 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 1997 [2024-11-21 22:26:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:04,672 INFO L225 Difference]: With dead ends: 36236 [2024-11-21 22:26:04,672 INFO L226 Difference]: Without dead ends: 20093 [2024-11-21 22:26:04,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 2001 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:26:04,683 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 99 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:04,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 54 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:26:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-21 22:26:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 18119. [2024-11-21 22:26:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18119 states, 18118 states have (on average 1.0164477315376974) internal successors, (18416), 18118 states have internal predecessors, (18416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 18416 transitions. [2024-11-21 22:26:04,821 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 18416 transitions. Word has length 1997 [2024-11-21 22:26:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:04,822 INFO L471 AbstractCegarLoop]: Abstraction has 18119 states and 18416 transitions. [2024-11-21 22:26:04,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 18416 transitions. [2024-11-21 22:26:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2044 [2024-11-21 22:26:04,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:04,850 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:26:04,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 22:26:05,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-21 22:26:05,051 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:05,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 542584330, now seen corresponding path program 1 times [2024-11-21 22:26:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529778004] [2024-11-21 22:26:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 3845 proven. 32 refuted. 0 times theorem prover too weak. 4040 trivial. 0 not checked. [2024-11-21 22:26:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529778004] [2024-11-21 22:26:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529778004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:26:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270179408] [2024-11-21 22:26:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:07,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:26:07,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:26:07,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:26:07,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 22:26:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:07,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:26:07,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:26:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 4878 proven. 0 refuted. 0 times theorem prover too weak. 3039 trivial. 0 not checked. [2024-11-21 22:26:07,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:26:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270179408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:26:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:26:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-21 22:26:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087637789] [2024-11-21 22:26:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:26:07,884 INFO L87 Difference]: Start difference. First operand 18119 states and 18416 transitions. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:08,559 INFO L93 Difference]: Finished difference Result 32288 states and 32850 transitions. [2024-11-21 22:26:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 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 2043 [2024-11-21 22:26:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:08,576 INFO L225 Difference]: With dead ends: 32288 [2024-11-21 22:26:08,576 INFO L226 Difference]: Without dead ends: 18119 [2024-11-21 22:26:08,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2046 GetRequests, 2042 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:26:08,587 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:08,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 433 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:26:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18119 states. [2024-11-21 22:26:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18119 to 18119. [2024-11-21 22:26:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18119 states, 18118 states have (on average 1.016006181697759) internal successors, (18408), 18118 states have internal predecessors, (18408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 18408 transitions. [2024-11-21 22:26:08,730 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 18408 transitions. Word has length 2043 [2024-11-21 22:26:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:08,731 INFO L471 AbstractCegarLoop]: Abstraction has 18119 states and 18408 transitions. [2024-11-21 22:26:08,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 18408 transitions. [2024-11-21 22:26:08,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2065 [2024-11-21 22:26:08,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:08,757 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:26:08,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 22:26:08,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-21 22:26:08,957 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:08,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1496990068, now seen corresponding path program 1 times [2024-11-21 22:26:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073612085] [2024-11-21 22:26:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 5681 proven. 140 refuted. 0 times theorem prover too weak. 1911 trivial. 0 not checked. [2024-11-21 22:26:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073612085] [2024-11-21 22:26:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073612085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:26:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666476709] [2024-11-21 22:26:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:10,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:26:10,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:26:10,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:26:10,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 22:26:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:11,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:26:11,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:26:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 4468 proven. 0 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2024-11-21 22:26:11,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:26:11,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666476709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:26:11,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:26:11,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-21 22:26:11,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573427582] [2024-11-21 22:26:11,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:11,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:26:11,539 INFO L87 Difference]: Start difference. First operand 18119 states and 18408 transitions. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:12,214 INFO L93 Difference]: Finished difference Result 34920 states and 35512 transitions. [2024-11-21 22:26:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 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 2064 [2024-11-21 22:26:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:12,231 INFO L225 Difference]: With dead ends: 34920 [2024-11-21 22:26:12,232 INFO L226 Difference]: Without dead ends: 20751 [2024-11-21 22:26:12,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2069 GetRequests, 2064 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:26:12,242 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 222 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:12,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 437 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:26:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-21 22:26:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19435. [2024-11-21 22:26:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19435 states, 19434 states have (on average 1.0154368632293918) internal successors, (19734), 19434 states have internal predecessors, (19734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19435 states to 19435 states and 19734 transitions. [2024-11-21 22:26:12,387 INFO L78 Accepts]: Start accepts. Automaton has 19435 states and 19734 transitions. Word has length 2064 [2024-11-21 22:26:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:12,387 INFO L471 AbstractCegarLoop]: Abstraction has 19435 states and 19734 transitions. [2024-11-21 22:26:12,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19435 states and 19734 transitions. [2024-11-21 22:26:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2151 [2024-11-21 22:26:12,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:12,414 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:26:12,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-21 22:26:12,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-21 22:26:12,615 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:12,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 467866832, now seen corresponding path program 1 times [2024-11-21 22:26:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:12,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035389023] [2024-11-21 22:26:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8755 backedges. 5203 proven. 0 refuted. 0 times theorem prover too weak. 3552 trivial. 0 not checked. [2024-11-21 22:26:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035389023] [2024-11-21 22:26:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035389023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:26:14,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:26:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:26:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150323829] [2024-11-21 22:26:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:14,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:26:14,288 INFO L87 Difference]: Start difference. First operand 19435 states and 19734 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:14,994 INFO L93 Difference]: Finished difference Result 35578 states and 36158 transitions. [2024-11-21 22:26:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 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 2150 [2024-11-21 22:26:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:15,013 INFO L225 Difference]: With dead ends: 35578 [2024-11-21 22:26:15,013 INFO L226 Difference]: Without dead ends: 20093 [2024-11-21 22:26:15,024 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 [2024-11-21 22:26:15,025 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:15,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 441 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:26:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-21 22:26:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 20093. [2024-11-21 22:26:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 20092 states have (on average 1.0151304001592674) internal successors, (20396), 20092 states have internal predecessors, (20396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 20396 transitions. [2024-11-21 22:26:15,192 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 20396 transitions. Word has length 2150 [2024-11-21 22:26:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:15,193 INFO L471 AbstractCegarLoop]: Abstraction has 20093 states and 20396 transitions. [2024-11-21 22:26:15,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 20396 transitions. [2024-11-21 22:26:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2198 [2024-11-21 22:26:15,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:15,221 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:26:15,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-21 22:26:15,221 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:15,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash 487446956, now seen corresponding path program 1 times [2024-11-21 22:26:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327981481] [2024-11-21 22:26:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8728 backedges. 4121 proven. 0 refuted. 0 times theorem prover too weak. 4607 trivial. 0 not checked. [2024-11-21 22:26:17,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327981481] [2024-11-21 22:26:17,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327981481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:26:17,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:26:17,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:26:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702503846] [2024-11-21 22:26:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:17,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:26:17,163 INFO L87 Difference]: Start difference. First operand 20093 states and 20396 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:17,861 INFO L93 Difference]: Finished difference Result 38539 states and 39156 transitions. [2024-11-21 22:26:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 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 2197 [2024-11-21 22:26:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:17,882 INFO L225 Difference]: With dead ends: 38539 [2024-11-21 22:26:17,882 INFO L226 Difference]: Without dead ends: 22396 [2024-11-21 22:26:17,894 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 [2024-11-21 22:26:17,895 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 209 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:17,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 47 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:26:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22396 states. [2024-11-21 22:26:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22396 to 19764. [2024-11-21 22:26:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0149774831756313) internal successors, (20059), 19763 states have internal predecessors, (20059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20059 transitions. [2024-11-21 22:26:18,062 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20059 transitions. Word has length 2197 [2024-11-21 22:26:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:18,063 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20059 transitions. [2024-11-21 22:26:18,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:26:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20059 transitions. [2024-11-21 22:26:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2232 [2024-11-21 22:26:18,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:18,092 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:26:18,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-21 22:26:18,092 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:18,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 212292311, now seen corresponding path program 1 times [2024-11-21 22:26:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:18,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523782463] [2024-11-21 22:26:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 6479 proven. 140 refuted. 0 times theorem prover too weak. 2381 trivial. 0 not checked. [2024-11-21 22:26:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:26:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523782463] [2024-11-21 22:26:20,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523782463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:26:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43134403] [2024-11-21 22:26:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:20,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:26:20,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:26:20,456 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:26:20,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 22:26:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:20,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 22:26:20,946 INFO L278 TraceCheckSpWp]: Computing forward predicates...