./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label28.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 8ff48638f08507efa79a38e2e8775c5b4b14feea4f002913b53cd095f4b7874d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:11:13,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:11:13,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:11:13,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:11:13,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:11:13,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:11:13,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:11:13,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:11:13,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:11:13,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:11:13,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:11:13,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:11:13,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:11:13,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:11:13,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:11:13,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:11:13,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:11:13,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:11:13,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:11:13,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:11:13,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:11:13,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:11:13,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:11:13,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:11:13,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:11:13,563 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:11:13,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:11:13,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:11:13,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:11:13,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:11:13,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:11:13,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:11:13,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:11:13,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:11:13,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:11:13,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:11:13,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:11:13,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:11:13,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:11:13,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:11:13,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:11:13,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:11:13,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ff48638f08507efa79a38e2e8775c5b4b14feea4f002913b53cd095f4b7874d [2024-11-08 11:11:13,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:11:13,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:11:13,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:11:13,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:11:13,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:11:13,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2024-11-08 11:11:15,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:11:15,474 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:11:15,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2024-11-08 11:11:15,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98e96f3d/b2088a8eb1c445b39da7430558e27655/FLAG62b72c40e [2024-11-08 11:11:15,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98e96f3d/b2088a8eb1c445b39da7430558e27655 [2024-11-08 11:11:15,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:11:15,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:11:15,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:11:15,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:11:15,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:11:15,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:11:15" (1/1) ... [2024-11-08 11:11:15,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f95e84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:15, skipping insertion in model container [2024-11-08 11:11:15,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:11:15" (1/1) ... [2024-11-08 11:11:15,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:11:15,855 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/Problem11_label28.c[6999,7012] [2024-11-08 11:11:16,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:11:16,067 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:11:16,092 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/Problem11_label28.c[6999,7012] [2024-11-08 11:11:16,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:11:16,219 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:11:16,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16 WrapperNode [2024-11-08 11:11:16,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:11:16,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:11:16,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:11:16,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:11:16,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,346 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-08 11:11:16,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:11:16,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:11:16,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:11:16,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:11:16,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,434 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 11:11:16,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:11:16,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:11:16,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:11:16,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:11:16,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (1/1) ... [2024-11-08 11:11:16,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:11:16,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:16,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 11:11:16,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 11:11:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:11:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:11:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:11:16,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:11:16,712 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:11:16,714 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:11:18,169 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-08 11:11:18,170 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:11:18,196 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:11:18,197 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:11:18,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:11:18 BoogieIcfgContainer [2024-11-08 11:11:18,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:11:18,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:11:18,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:11:18,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:11:18,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:11:15" (1/3) ... [2024-11-08 11:11:18,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dce2ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:11:18, skipping insertion in model container [2024-11-08 11:11:18,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:11:16" (2/3) ... [2024-11-08 11:11:18,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dce2ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:11:18, skipping insertion in model container [2024-11-08 11:11:18,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:11:18" (3/3) ... [2024-11-08 11:11:18,208 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2024-11-08 11:11:18,224 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:11:18,224 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:11:18,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:11:18,292 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;@12323285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:11:18,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:11:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 11:11:18,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:18,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:18,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:18,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash 563919826, now seen corresponding path program 1 times [2024-11-08 11:11:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822492216] [2024-11-08 11:11:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822492216] [2024-11-08 11:11:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822492216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:18,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:18,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:11:18,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634407792] [2024-11-08 11:11:18,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:18,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:18,787 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:19,835 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2024-11-08 11:11:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:19,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 11:11:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:19,848 INFO L225 Difference]: With dead ends: 776 [2024-11-08 11:11:19,848 INFO L226 Difference]: Without dead ends: 413 [2024-11-08 11:11:19,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:19,855 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 179 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:19,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 196 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 11:11:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-08 11:11:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 411. [2024-11-08 11:11:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.4585365853658536) internal successors, (598), 410 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 598 transitions. [2024-11-08 11:11:19,927 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 598 transitions. Word has length 48 [2024-11-08 11:11:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:19,927 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 598 transitions. [2024-11-08 11:11:19,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 598 transitions. [2024-11-08 11:11:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 11:11:19,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:19,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:19,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:11:19,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:19,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2122398730, now seen corresponding path program 1 times [2024-11-08 11:11:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684442158] [2024-11-08 11:11:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684442158] [2024-11-08 11:11:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684442158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:11:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155338812] [2024-11-08 11:11:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:20,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:20,138 INFO L87 Difference]: Start difference. First operand 411 states and 598 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:20,845 INFO L93 Difference]: Finished difference Result 1209 states and 1765 transitions. [2024-11-08 11:11:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-08 11:11:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:20,851 INFO L225 Difference]: With dead ends: 1209 [2024-11-08 11:11:20,851 INFO L226 Difference]: Without dead ends: 800 [2024-11-08 11:11:20,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:20,854 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:20,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:11:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-08 11:11:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 787. [2024-11-08 11:11:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.3842239185750635) internal successors, (1088), 786 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1088 transitions. [2024-11-08 11:11:20,891 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1088 transitions. Word has length 116 [2024-11-08 11:11:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:20,892 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 1088 transitions. [2024-11-08 11:11:20,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1088 transitions. [2024-11-08 11:11:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-08 11:11:20,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:20,895 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:20,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:11:20,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:20,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 151352741, now seen corresponding path program 1 times [2024-11-08 11:11:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329968952] [2024-11-08 11:11:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329968952] [2024-11-08 11:11:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329968952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:21,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:21,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:11:21,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042718168] [2024-11-08 11:11:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:21,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:21,237 INFO L87 Difference]: Start difference. First operand 787 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:21,872 INFO L93 Difference]: Finished difference Result 1942 states and 2629 transitions. [2024-11-08 11:11:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-11-08 11:11:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:21,879 INFO L225 Difference]: With dead ends: 1942 [2024-11-08 11:11:21,879 INFO L226 Difference]: Without dead ends: 1157 [2024-11-08 11:11:21,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:21,882 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:21,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:11:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-08 11:11:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-11-08 11:11:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.277056277056277) internal successors, (1475), 1155 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1475 transitions. [2024-11-08 11:11:21,906 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1475 transitions. Word has length 118 [2024-11-08 11:11:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:21,907 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1475 transitions. [2024-11-08 11:11:21,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1475 transitions. [2024-11-08 11:11:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 11:11:21,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:21,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:21,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:11:21,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:21,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1565625650, now seen corresponding path program 1 times [2024-11-08 11:11:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:21,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20259927] [2024-11-08 11:11:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:22,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20259927] [2024-11-08 11:11:22,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20259927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:22,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:22,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:22,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558689681] [2024-11-08 11:11:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:22,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:22,196 INFO L87 Difference]: Start difference. First operand 1156 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:23,020 INFO L93 Difference]: Finished difference Result 2691 states and 3513 transitions. [2024-11-08 11:11:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-11-08 11:11:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:23,027 INFO L225 Difference]: With dead ends: 2691 [2024-11-08 11:11:23,027 INFO L226 Difference]: Without dead ends: 1721 [2024-11-08 11:11:23,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:23,031 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 158 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:23,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 336 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 11:11:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-08 11:11:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1528. [2024-11-08 11:11:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.260641781270465) internal successors, (1925), 1527 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1925 transitions. [2024-11-08 11:11:23,061 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1925 transitions. Word has length 160 [2024-11-08 11:11:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:23,062 INFO L471 AbstractCegarLoop]: Abstraction has 1528 states and 1925 transitions. [2024-11-08 11:11:23,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1925 transitions. [2024-11-08 11:11:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-08 11:11:23,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:23,067 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:23,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:11:23,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:23,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1640701857, now seen corresponding path program 1 times [2024-11-08 11:11:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:23,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376449347] [2024-11-08 11:11:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:23,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 11:11:23,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376449347] [2024-11-08 11:11:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376449347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264611737] [2024-11-08 11:11:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:23,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:23,364 INFO L87 Difference]: Start difference. First operand 1528 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:24,195 INFO L93 Difference]: Finished difference Result 3613 states and 4595 transitions. [2024-11-08 11:11:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 230 [2024-11-08 11:11:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:24,203 INFO L225 Difference]: With dead ends: 3613 [2024-11-08 11:11:24,203 INFO L226 Difference]: Without dead ends: 2087 [2024-11-08 11:11:24,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:24,206 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 149 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:24,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 387 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 11:11:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2024-11-08 11:11:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1896. [2024-11-08 11:11:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 1.2480211081794195) internal successors, (2365), 1895 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2365 transitions. [2024-11-08 11:11:24,235 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2365 transitions. Word has length 230 [2024-11-08 11:11:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:24,236 INFO L471 AbstractCegarLoop]: Abstraction has 1896 states and 2365 transitions. [2024-11-08 11:11:24,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2365 transitions. [2024-11-08 11:11:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-08 11:11:24,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:24,240 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:11:24,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:11:24,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:24,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 302674822, now seen corresponding path program 1 times [2024-11-08 11:11:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168328547] [2024-11-08 11:11:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:24,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-08 11:11:24,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168328547] [2024-11-08 11:11:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168328547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:11:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549104268] [2024-11-08 11:11:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:24,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:24,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:24,414 INFO L87 Difference]: Start difference. First operand 1896 states and 2365 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:25,132 INFO L93 Difference]: Finished difference Result 4894 states and 6199 transitions. [2024-11-08 11:11:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:25,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-11-08 11:11:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:25,144 INFO L225 Difference]: With dead ends: 4894 [2024-11-08 11:11:25,145 INFO L226 Difference]: Without dead ends: 3000 [2024-11-08 11:11:25,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:25,149 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:25,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 155 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:11:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2024-11-08 11:11:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2816. [2024-11-08 11:11:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2815 states have (on average 1.205328596802842) internal successors, (3393), 2815 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 3393 transitions. [2024-11-08 11:11:25,201 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 3393 transitions. Word has length 241 [2024-11-08 11:11:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:25,202 INFO L471 AbstractCegarLoop]: Abstraction has 2816 states and 3393 transitions. [2024-11-08 11:11:25,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 3393 transitions. [2024-11-08 11:11:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-08 11:11:25,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:25,207 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:25,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:11:25,208 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1319455466, now seen corresponding path program 1 times [2024-11-08 11:11:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77182353] [2024-11-08 11:11:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77182353] [2024-11-08 11:11:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77182353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:25,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907013516] [2024-11-08 11:11:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:25,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:25,523 INFO L87 Difference]: Start difference. First operand 2816 states and 3393 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:26,310 INFO L93 Difference]: Finished difference Result 6931 states and 8403 transitions. [2024-11-08 11:11:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2024-11-08 11:11:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:26,323 INFO L225 Difference]: With dead ends: 6931 [2024-11-08 11:11:26,323 INFO L226 Difference]: Without dead ends: 4117 [2024-11-08 11:11:26,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:26,328 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 123 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:26,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 156 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:11:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-11-08 11:11:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 4113. [2024-11-08 11:11:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 1.1943093385214008) internal successors, (4911), 4112 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 4911 transitions. [2024-11-08 11:11:26,427 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 4911 transitions. Word has length 257 [2024-11-08 11:11:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:26,427 INFO L471 AbstractCegarLoop]: Abstraction has 4113 states and 4911 transitions. [2024-11-08 11:11:26,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 4911 transitions. [2024-11-08 11:11:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-08 11:11:26,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:26,434 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:26,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:11:26,434 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:26,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash 886178797, now seen corresponding path program 1 times [2024-11-08 11:11:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025733723] [2024-11-08 11:11:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:26,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025733723] [2024-11-08 11:11:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025733723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093689349] [2024-11-08 11:11:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:11:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:11:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:11:26,876 INFO L87 Difference]: Start difference. First operand 4113 states and 4911 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:28,201 INFO L93 Difference]: Finished difference Result 12101 states and 14579 transitions. [2024-11-08 11:11:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:11:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-08 11:11:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:28,225 INFO L225 Difference]: With dead ends: 12101 [2024-11-08 11:11:28,226 INFO L226 Difference]: Without dead ends: 7990 [2024-11-08 11:11:28,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:11:28,232 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 214 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:28,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 144 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:11:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2024-11-08 11:11:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 7985. [2024-11-08 11:11:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 7984 states have (on average 1.18937875751503) internal successors, (9496), 7984 states have internal predecessors, (9496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 9496 transitions. [2024-11-08 11:11:28,351 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 9496 transitions. Word has length 263 [2024-11-08 11:11:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:28,351 INFO L471 AbstractCegarLoop]: Abstraction has 7985 states and 9496 transitions. [2024-11-08 11:11:28,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 9496 transitions. [2024-11-08 11:11:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-08 11:11:28,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:28,356 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:28,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:11:28,357 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:28,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1947751424, now seen corresponding path program 1 times [2024-11-08 11:11:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233892708] [2024-11-08 11:11:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 144 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233892708] [2024-11-08 11:11:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233892708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432436964] [2024-11-08 11:11:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:29,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:29,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:29,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:11:29,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:11:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:29,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:11:29,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-08 11:11:29,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:11:29,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432436964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:29,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:11:29,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:11:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176334095] [2024-11-08 11:11:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:29,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:11:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:11:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:11:29,943 INFO L87 Difference]: Start difference. First operand 7985 states and 9496 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:30,987 INFO L93 Difference]: Finished difference Result 20956 states and 24756 transitions. [2024-11-08 11:11:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:11:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 266 [2024-11-08 11:11:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:31,031 INFO L225 Difference]: With dead ends: 20956 [2024-11-08 11:11:31,032 INFO L226 Difference]: Without dead ends: 13341 [2024-11-08 11:11:31,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:11:31,043 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 275 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:31,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 178 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 11:11:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2024-11-08 11:11:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 10753. [2024-11-08 11:11:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10753 states, 10752 states have (on average 1.177641369047619) internal successors, (12662), 10752 states have internal predecessors, (12662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10753 states to 10753 states and 12662 transitions. [2024-11-08 11:11:31,239 INFO L78 Accepts]: Start accepts. Automaton has 10753 states and 12662 transitions. Word has length 266 [2024-11-08 11:11:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:31,239 INFO L471 AbstractCegarLoop]: Abstraction has 10753 states and 12662 transitions. [2024-11-08 11:11:31,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10753 states and 12662 transitions. [2024-11-08 11:11:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-08 11:11:31,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:31,245 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:31,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:11:31,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:31,446 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:31,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1546626242, now seen corresponding path program 1 times [2024-11-08 11:11:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:31,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213983208] [2024-11-08 11:11:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 11:11:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213983208] [2024-11-08 11:11:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213983208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:31,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120622828] [2024-11-08 11:11:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:31,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:31,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:31,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:31,615 INFO L87 Difference]: Start difference. First operand 10753 states and 12662 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:32,213 INFO L93 Difference]: Finished difference Result 21134 states and 24934 transitions. [2024-11-08 11:11:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-08 11:11:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:32,230 INFO L225 Difference]: With dead ends: 21134 [2024-11-08 11:11:32,231 INFO L226 Difference]: Without dead ends: 10751 [2024-11-08 11:11:32,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:32,242 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 187 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:32,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 304 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:11:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2024-11-08 11:11:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 10751. [2024-11-08 11:11:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10750 states have (on average 1.1469767441860466) internal successors, (12330), 10750 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 12330 transitions. [2024-11-08 11:11:32,431 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 12330 transitions. Word has length 278 [2024-11-08 11:11:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:32,432 INFO L471 AbstractCegarLoop]: Abstraction has 10751 states and 12330 transitions. [2024-11-08 11:11:32,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 12330 transitions. [2024-11-08 11:11:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-08 11:11:32,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:32,438 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:32,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:11:32,439 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:32,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash 627435673, now seen corresponding path program 1 times [2024-11-08 11:11:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:32,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122238762] [2024-11-08 11:11:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122238762] [2024-11-08 11:11:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122238762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63572275] [2024-11-08 11:11:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:32,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:11:32,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:11:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:33,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:11:33,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:33,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:11:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63572275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:11:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:11:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843157097] [2024-11-08 11:11:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:11:33,432 INFO L87 Difference]: Start difference. First operand 10751 states and 12330 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) 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) [2024-11-08 11:11:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:34,068 INFO L93 Difference]: Finished difference Result 22626 states and 26090 transitions. [2024-11-08 11:11:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) 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 [2024-11-08 11:11:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:34,085 INFO L225 Difference]: With dead ends: 22626 [2024-11-08 11:11:34,085 INFO L226 Difference]: Without dead ends: 12245 [2024-11-08 11:11:34,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:11:34,097 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 99 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:34,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 326 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:11:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12245 states. [2024-11-08 11:11:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12245 to 12234. [2024-11-08 11:11:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.147224720019619) internal successors, (14034), 12233 states have internal predecessors, (14034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 14034 transitions. [2024-11-08 11:11:34,240 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 14034 transitions. Word has length 281 [2024-11-08 11:11:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:34,240 INFO L471 AbstractCegarLoop]: Abstraction has 12234 states and 14034 transitions. [2024-11-08 11:11:34,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) 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) [2024-11-08 11:11:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 14034 transitions. [2024-11-08 11:11:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-08 11:11:34,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:34,248 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:11:34,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:11:34,449 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,SelfDestructingSolverStorable10 [2024-11-08 11:11:34,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:34,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 510288335, now seen corresponding path program 1 times [2024-11-08 11:11:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:34,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064925819] [2024-11-08 11:11:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-08 11:11:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064925819] [2024-11-08 11:11:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064925819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:34,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575557286] [2024-11-08 11:11:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:34,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:34,749 INFO L87 Difference]: Start difference. First operand 12234 states and 14034 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:35,461 INFO L93 Difference]: Finished difference Result 27225 states and 31313 transitions. [2024-11-08 11:11:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 310 [2024-11-08 11:11:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:35,485 INFO L225 Difference]: With dead ends: 27225 [2024-11-08 11:11:35,485 INFO L226 Difference]: Without dead ends: 15361 [2024-11-08 11:11:35,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:35,499 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:35,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 363 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:11:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15361 states. [2024-11-08 11:11:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15361 to 14257. [2024-11-08 11:11:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14257 states, 14256 states have (on average 1.137135241301908) internal successors, (16211), 14256 states have internal predecessors, (16211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14257 states to 14257 states and 16211 transitions. [2024-11-08 11:11:35,667 INFO L78 Accepts]: Start accepts. Automaton has 14257 states and 16211 transitions. Word has length 310 [2024-11-08 11:11:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:35,668 INFO L471 AbstractCegarLoop]: Abstraction has 14257 states and 16211 transitions. [2024-11-08 11:11:35,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 14257 states and 16211 transitions. [2024-11-08 11:11:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-08 11:11:35,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:35,678 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:35,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:11:35,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:35,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2040805826, now seen corresponding path program 1 times [2024-11-08 11:11:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496043352] [2024-11-08 11:11:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 242 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496043352] [2024-11-08 11:11:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496043352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920665913] [2024-11-08 11:11:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:36,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:11:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:11:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:36,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:11:36,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 11:11:37,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:11:37,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920665913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:37,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:11:37,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:11:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533023789] [2024-11-08 11:11:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:37,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:11:37,129 INFO L87 Difference]: Start difference. First operand 14257 states and 16211 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:37,661 INFO L93 Difference]: Finished difference Result 29625 states and 33706 transitions. [2024-11-08 11:11:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2024-11-08 11:11:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:37,680 INFO L225 Difference]: With dead ends: 29625 [2024-11-08 11:11:37,680 INFO L226 Difference]: Without dead ends: 15554 [2024-11-08 11:11:37,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:11:37,696 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:37,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 369 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:11:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15554 states. [2024-11-08 11:11:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15554 to 15183. [2024-11-08 11:11:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 1.1325253589777369) internal successors, (17194), 15182 states have internal predecessors, (17194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 17194 transitions. [2024-11-08 11:11:37,898 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 17194 transitions. Word has length 335 [2024-11-08 11:11:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:37,899 INFO L471 AbstractCegarLoop]: Abstraction has 15183 states and 17194 transitions. [2024-11-08 11:11:37,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:37,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 17194 transitions. [2024-11-08 11:11:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-08 11:11:37,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:37,909 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:37,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 11:11:38,113 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 [2024-11-08 11:11:38,114 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:38,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1448916129, now seen corresponding path program 1 times [2024-11-08 11:11:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:38,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705164913] [2024-11-08 11:11:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-08 11:11:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705164913] [2024-11-08 11:11:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705164913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:11:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:11:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472691615] [2024-11-08 11:11:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:38,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:38,428 INFO L87 Difference]: Start difference. First operand 15183 states and 17194 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:39,046 INFO L93 Difference]: Finished difference Result 17761 states and 20103 transitions. [2024-11-08 11:11:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 344 [2024-11-08 11:11:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:39,067 INFO L225 Difference]: With dead ends: 17761 [2024-11-08 11:11:39,067 INFO L226 Difference]: Without dead ends: 17759 [2024-11-08 11:11:39,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:11:39,073 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 171 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:39,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 150 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:11:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17759 states. [2024-11-08 11:11:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17759 to 16839. [2024-11-08 11:11:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16839 states, 16838 states have (on average 1.1343389951300629) internal successors, (19100), 16838 states have internal predecessors, (19100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16839 states to 16839 states and 19100 transitions. [2024-11-08 11:11:39,336 INFO L78 Accepts]: Start accepts. Automaton has 16839 states and 19100 transitions. Word has length 344 [2024-11-08 11:11:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:39,336 INFO L471 AbstractCegarLoop]: Abstraction has 16839 states and 19100 transitions. [2024-11-08 11:11:39,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16839 states and 19100 transitions. [2024-11-08 11:11:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-08 11:11:39,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:39,349 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:11:39,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:11:39,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:39,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1133150815, now seen corresponding path program 1 times [2024-11-08 11:11:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993454814] [2024-11-08 11:11:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:39,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 252 proven. 51 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-08 11:11:40,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993454814] [2024-11-08 11:11:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993454814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126417059] [2024-11-08 11:11:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:40,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:40,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:40,323 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) [2024-11-08 11:11:40,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 11:11:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:40,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:11:40,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-08 11:11:40,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:11:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126417059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:11:40,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:11:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:11:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949204993] [2024-11-08 11:11:40,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:11:40,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:11:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:11:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:11:40,761 INFO L87 Difference]: Start difference. First operand 16839 states and 19100 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:41,399 INFO L93 Difference]: Finished difference Result 33862 states and 38390 transitions. [2024-11-08 11:11:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:11:41,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2024-11-08 11:11:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:41,422 INFO L225 Difference]: With dead ends: 33862 [2024-11-08 11:11:41,423 INFO L226 Difference]: Without dead ends: 17025 [2024-11-08 11:11:41,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:11:41,437 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:41,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 169 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:11:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17025 states. [2024-11-08 11:11:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17025 to 15919. [2024-11-08 11:11:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15919 states, 15918 states have (on average 1.1276542279180801) internal successors, (17950), 15918 states have internal predecessors, (17950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15919 states to 15919 states and 17950 transitions. [2024-11-08 11:11:41,699 INFO L78 Accepts]: Start accepts. Automaton has 15919 states and 17950 transitions. Word has length 356 [2024-11-08 11:11:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:41,699 INFO L471 AbstractCegarLoop]: Abstraction has 15919 states and 17950 transitions. [2024-11-08 11:11:41,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15919 states and 17950 transitions. [2024-11-08 11:11:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-08 11:11:41,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:41,710 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:41,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 11:11:41,914 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 [2024-11-08 11:11:41,915 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:41,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -84443467, now seen corresponding path program 1 times [2024-11-08 11:11:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:41,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275950894] [2024-11-08 11:11:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 281 proven. 58 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:11:42,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275950894] [2024-11-08 11:11:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275950894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125845218] [2024-11-08 11:11:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:42,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:42,805 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) [2024-11-08 11:11:42,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 11:11:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:42,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 11:11:42,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 202 proven. 137 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:11:43,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:11:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 293 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:11:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125845218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:11:43,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:11:43,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-08 11:11:43,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525151639] [2024-11-08 11:11:43,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:11:43,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 11:11:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 11:11:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-08 11:11:43,951 INFO L87 Difference]: Start difference. First operand 15919 states and 17950 transitions. Second operand has 11 states, 11 states have (on average 75.63636363636364) internal successors, (832), 11 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:11:49,590 INFO L93 Difference]: Finished difference Result 41783 states and 47212 transitions. [2024-11-08 11:11:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 11:11:49,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.63636363636364) internal successors, (832), 11 states have internal predecessors, (832), 0 states have call successors, (0), 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 373 [2024-11-08 11:11:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:11:49,621 INFO L225 Difference]: With dead ends: 41783 [2024-11-08 11:11:49,622 INFO L226 Difference]: Without dead ends: 25498 [2024-11-08 11:11:49,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2024-11-08 11:11:49,639 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 2712 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 8095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:11:49,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 267 Invalid, 8095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [971 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-08 11:11:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25498 states. [2024-11-08 11:11:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25498 to 17562. [2024-11-08 11:11:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17562 states, 17561 states have (on average 1.1097317920391778) internal successors, (19488), 17561 states have internal predecessors, (19488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17562 states to 17562 states and 19488 transitions. [2024-11-08 11:11:49,954 INFO L78 Accepts]: Start accepts. Automaton has 17562 states and 19488 transitions. Word has length 373 [2024-11-08 11:11:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:11:49,955 INFO L471 AbstractCegarLoop]: Abstraction has 17562 states and 19488 transitions. [2024-11-08 11:11:49,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.63636363636364) internal successors, (832), 11 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:11:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17562 states and 19488 transitions. [2024-11-08 11:11:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-08 11:11:49,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:11:49,969 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:11:49,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 11:11:50,169 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 [2024-11-08 11:11:50,170 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:11:50,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:11:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1802628130, now seen corresponding path program 1 times [2024-11-08 11:11:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:11:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598262441] [2024-11-08 11:11:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:11:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 137 proven. 229 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-08 11:11:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:11:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598262441] [2024-11-08 11:11:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598262441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:11:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478455435] [2024-11-08 11:11:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:11:50,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:11:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:11:50,578 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) [2024-11-08 11:11:50,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 11:11:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:11:50,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 11:11:50,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:11:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 242 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:52,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:11:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 242 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:11:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478455435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:11:54,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:11:54,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-08 11:11:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377382659] [2024-11-08 11:11:54,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:11:54,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 11:11:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:11:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 11:11:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-08 11:11:54,429 INFO L87 Difference]: Start difference. First operand 17562 states and 19488 transitions. Second operand has 12 states, 12 states have (on average 80.5) internal successors, (966), 11 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:00,028 INFO L93 Difference]: Finished difference Result 50276 states and 55513 transitions. [2024-11-08 11:12:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 11:12:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 80.5) internal successors, (966), 11 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2024-11-08 11:12:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:00,064 INFO L225 Difference]: With dead ends: 50276 [2024-11-08 11:12:00,065 INFO L226 Difference]: Without dead ends: 32900 [2024-11-08 11:12:00,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 11:12:00,084 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 3245 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 6969 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 8071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 6969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:00,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3245 Valid, 185 Invalid, 8071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 6969 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-08 11:12:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32900 states. [2024-11-08 11:12:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32900 to 20320. [2024-11-08 11:12:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20320 states, 20319 states have (on average 1.0838131797824697) internal successors, (22022), 20319 states have internal predecessors, (22022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20320 states to 20320 states and 22022 transitions. [2024-11-08 11:12:00,476 INFO L78 Accepts]: Start accepts. Automaton has 20320 states and 22022 transitions. Word has length 415 [2024-11-08 11:12:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:00,476 INFO L471 AbstractCegarLoop]: Abstraction has 20320 states and 22022 transitions. [2024-11-08 11:12:00,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.5) internal successors, (966), 11 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 20320 states and 22022 transitions. [2024-11-08 11:12:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-08 11:12:00,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:00,499 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:00,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 11:12:00,700 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 [2024-11-08 11:12:00,700 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -580259533, now seen corresponding path program 1 times [2024-11-08 11:12:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153276672] [2024-11-08 11:12:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 229 proven. 516 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-08 11:12:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153276672] [2024-11-08 11:12:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153276672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799976739] [2024-11-08 11:12:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:01,298 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) [2024-11-08 11:12:01,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 11:12:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:01,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:12:01,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-11-08 11:12:01,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:12:01,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799976739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:01,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:12:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:12:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235473979] [2024-11-08 11:12:01,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:01,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:12:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:12:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:12:01,785 INFO L87 Difference]: Start difference. First operand 20320 states and 22022 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:02,682 INFO L93 Difference]: Finished difference Result 41376 states and 44833 transitions. [2024-11-08 11:12:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:12:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 552 [2024-11-08 11:12:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:02,703 INFO L225 Difference]: With dead ends: 41376 [2024-11-08 11:12:02,703 INFO L226 Difference]: Without dead ends: 21242 [2024-11-08 11:12:02,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:12:02,719 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 207 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:02,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 114 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 11:12:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21242 states. [2024-11-08 11:12:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21242 to 21056. [2024-11-08 11:12:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21056 states, 21055 states have (on average 1.0819757777250059) internal successors, (22781), 21055 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21056 states to 21056 states and 22781 transitions. [2024-11-08 11:12:02,965 INFO L78 Accepts]: Start accepts. Automaton has 21056 states and 22781 transitions. Word has length 552 [2024-11-08 11:12:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 21056 states and 22781 transitions. [2024-11-08 11:12:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 21056 states and 22781 transitions. [2024-11-08 11:12:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-08 11:12:02,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:02,981 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:02,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 11:12:03,181 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 [2024-11-08 11:12:03,182 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:03,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 762866496, now seen corresponding path program 1 times [2024-11-08 11:12:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603153718] [2024-11-08 11:12:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:03,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 183 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-08 11:12:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603153718] [2024-11-08 11:12:03,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603153718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664185936] [2024-11-08 11:12:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:03,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:03,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:03,680 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) [2024-11-08 11:12:03,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 11:12:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:03,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 11:12:03,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 235 proven. 452 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-08 11:12:04,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:12:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 183 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-08 11:12:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664185936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:12:06,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:12:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-08 11:12:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700371824] [2024-11-08 11:12:06,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:12:06,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 11:12:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 11:12:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:12:06,124 INFO L87 Difference]: Start difference. First operand 21056 states and 22781 transitions. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 9 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:08,512 INFO L93 Difference]: Finished difference Result 64429 states and 69461 transitions. [2024-11-08 11:12:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 11:12:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 9 states have internal predecessors, (800), 0 states have call successors, (0), 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 570 [2024-11-08 11:12:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:08,555 INFO L225 Difference]: With dead ends: 64429 [2024-11-08 11:12:08,555 INFO L226 Difference]: Without dead ends: 43743 [2024-11-08 11:12:08,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:12:08,572 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 858 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 3418 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:08,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 141 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3418 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 11:12:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43743 states. [2024-11-08 11:12:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43743 to 23648. [2024-11-08 11:12:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23648 states, 23647 states have (on average 1.0820822937370491) internal successors, (25588), 23647 states have internal predecessors, (25588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23648 states to 23648 states and 25588 transitions. [2024-11-08 11:12:08,875 INFO L78 Accepts]: Start accepts. Automaton has 23648 states and 25588 transitions. Word has length 570 [2024-11-08 11:12:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:08,875 INFO L471 AbstractCegarLoop]: Abstraction has 23648 states and 25588 transitions. [2024-11-08 11:12:08,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 9 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23648 states and 25588 transitions. [2024-11-08 11:12:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-11-08 11:12:08,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:08,888 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:08,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 11:12:09,088 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 [2024-11-08 11:12:09,089 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:09,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash 745598085, now seen corresponding path program 1 times [2024-11-08 11:12:09,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:09,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581805801] [2024-11-08 11:12:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:09,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-08 11:12:09,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:09,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581805801] [2024-11-08 11:12:09,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581805801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:09,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:12:09,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:12:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974958164] [2024-11-08 11:12:09,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:09,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:12:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:12:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:12:09,600 INFO L87 Difference]: Start difference. First operand 23648 states and 25588 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:10,581 INFO L93 Difference]: Finished difference Result 57811 states and 62455 transitions. [2024-11-08 11:12:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:12:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 584 [2024-11-08 11:12:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:10,620 INFO L225 Difference]: With dead ends: 57811 [2024-11-08 11:12:10,620 INFO L226 Difference]: Without dead ends: 33425 [2024-11-08 11:12:10,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:12:10,638 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 203 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:10,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 63 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 11:12:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33425 states. [2024-11-08 11:12:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33425 to 28434. [2024-11-08 11:12:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28434 states, 28433 states have (on average 1.0777265853058067) internal successors, (30643), 28433 states have internal predecessors, (30643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28434 states to 28434 states and 30643 transitions. [2024-11-08 11:12:10,927 INFO L78 Accepts]: Start accepts. Automaton has 28434 states and 30643 transitions. Word has length 584 [2024-11-08 11:12:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:10,928 INFO L471 AbstractCegarLoop]: Abstraction has 28434 states and 30643 transitions. [2024-11-08 11:12:10,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28434 states and 30643 transitions. [2024-11-08 11:12:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-11-08 11:12:10,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:10,943 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:10,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 11:12:10,943 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:10,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 270747069, now seen corresponding path program 1 times [2024-11-08 11:12:10,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:10,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300067384] [2024-11-08 11:12:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 873 proven. 172 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-08 11:12:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300067384] [2024-11-08 11:12:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300067384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512295258] [2024-11-08 11:12:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:12,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:12,133 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) [2024-11-08 11:12:12,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 11:12:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:12,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:12:12,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-08 11:12:12,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:12:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512295258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:12,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:12:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:12:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961509444] [2024-11-08 11:12:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:12,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:12:12,431 INFO L87 Difference]: Start difference. First operand 28434 states and 30643 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:13,032 INFO L93 Difference]: Finished difference Result 54661 states and 58965 transitions. [2024-11-08 11:12:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 610 [2024-11-08 11:12:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:13,056 INFO L225 Difference]: With dead ends: 54661 [2024-11-08 11:12:13,056 INFO L226 Difference]: Without dead ends: 28439 [2024-11-08 11:12:13,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:12:13,073 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:13,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 328 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:12:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28439 states. [2024-11-08 11:12:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28439 to 28434. [2024-11-08 11:12:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28434 states, 28433 states have (on average 1.074772271656174) internal successors, (30559), 28433 states have internal predecessors, (30559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28434 states to 28434 states and 30559 transitions. [2024-11-08 11:12:13,437 INFO L78 Accepts]: Start accepts. Automaton has 28434 states and 30559 transitions. Word has length 610 [2024-11-08 11:12:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:13,437 INFO L471 AbstractCegarLoop]: Abstraction has 28434 states and 30559 transitions. [2024-11-08 11:12:13,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28434 states and 30559 transitions. [2024-11-08 11:12:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-08 11:12:13,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:13,456 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:13,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 11:12:13,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:13,657 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:13,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1983796039, now seen corresponding path program 1 times [2024-11-08 11:12:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:13,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132580239] [2024-11-08 11:12:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:13,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 844 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-11-08 11:12:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132580239] [2024-11-08 11:12:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132580239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:14,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:12:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:12:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249005513] [2024-11-08 11:12:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:14,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:14,097 INFO L87 Difference]: Start difference. First operand 28434 states and 30559 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:14,799 INFO L93 Difference]: Finished difference Result 58345 states and 62715 transitions. [2024-11-08 11:12:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 626 [2024-11-08 11:12:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:14,830 INFO L225 Difference]: With dead ends: 58345 [2024-11-08 11:12:14,830 INFO L226 Difference]: Without dead ends: 32123 [2024-11-08 11:12:14,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:14,849 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 106 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:14,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 66 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:12:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32123 states. [2024-11-08 11:12:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32123 to 27690. [2024-11-08 11:12:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27690 states, 27689 states have (on average 1.0722308497959478) internal successors, (29689), 27689 states have internal predecessors, (29689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27690 states to 27690 states and 29689 transitions. [2024-11-08 11:12:15,103 INFO L78 Accepts]: Start accepts. Automaton has 27690 states and 29689 transitions. Word has length 626 [2024-11-08 11:12:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:15,104 INFO L471 AbstractCegarLoop]: Abstraction has 27690 states and 29689 transitions. [2024-11-08 11:12:15,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27690 states and 29689 transitions. [2024-11-08 11:12:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2024-11-08 11:12:15,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:15,120 INFO L215 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:15,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 11:12:15,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:15,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1939556016, now seen corresponding path program 1 times [2024-11-08 11:12:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334886182] [2024-11-08 11:12:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1462 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-11-08 11:12:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334886182] [2024-11-08 11:12:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334886182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:12:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:12:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882969475] [2024-11-08 11:12:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:15,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:15,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:15,564 INFO L87 Difference]: Start difference. First operand 27690 states and 29689 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:16,153 INFO L93 Difference]: Finished difference Result 58134 states and 62326 transitions. [2024-11-08 11:12:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 743 [2024-11-08 11:12:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:16,184 INFO L225 Difference]: With dead ends: 58134 [2024-11-08 11:12:16,184 INFO L226 Difference]: Without dead ends: 30814 [2024-11-08 11:12:16,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:16,203 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 121 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:16,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 314 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:12:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30814 states. [2024-11-08 11:12:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30814 to 24182. [2024-11-08 11:12:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24182 states, 24181 states have (on average 1.0726189983871635) internal successors, (25937), 24181 states have internal predecessors, (25937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24182 states to 24182 states and 25937 transitions. [2024-11-08 11:12:16,439 INFO L78 Accepts]: Start accepts. Automaton has 24182 states and 25937 transitions. Word has length 743 [2024-11-08 11:12:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:16,440 INFO L471 AbstractCegarLoop]: Abstraction has 24182 states and 25937 transitions. [2024-11-08 11:12:16,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:16,440 INFO L276 IsEmpty]: Start isEmpty. Operand 24182 states and 25937 transitions. [2024-11-08 11:12:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-11-08 11:12:16,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:16,456 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:16,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 11:12:16,456 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:16,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:16,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1592903774, now seen corresponding path program 1 times [2024-11-08 11:12:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:16,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486408273] [2024-11-08 11:12:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:16,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 1273 proven. 64 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-08 11:12:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486408273] [2024-11-08 11:12:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486408273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804081373] [2024-11-08 11:12:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:17,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:17,184 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) [2024-11-08 11:12:17,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 11:12:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:17,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:12:17,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 1337 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-08 11:12:17,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:12:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804081373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:12:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:12:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334917447] [2024-11-08 11:12:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:17,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:17,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:12:17,535 INFO L87 Difference]: Start difference. First operand 24182 states and 25937 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:18,114 INFO L93 Difference]: Finished difference Result 47452 states and 50884 transitions. [2024-11-08 11:12:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:18,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 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 760 [2024-11-08 11:12:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:18,141 INFO L225 Difference]: With dead ends: 47452 [2024-11-08 11:12:18,141 INFO L226 Difference]: Without dead ends: 25112 [2024-11-08 11:12:18,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:12:18,156 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 77 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:18,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 348 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:12:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25112 states. [2024-11-08 11:12:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25112 to 22148. [2024-11-08 11:12:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22148 states, 22147 states have (on average 1.0719736307400551) internal successors, (23741), 22147 states have internal predecessors, (23741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22148 states to 22148 states and 23741 transitions. [2024-11-08 11:12:18,368 INFO L78 Accepts]: Start accepts. Automaton has 22148 states and 23741 transitions. Word has length 760 [2024-11-08 11:12:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:18,368 INFO L471 AbstractCegarLoop]: Abstraction has 22148 states and 23741 transitions. [2024-11-08 11:12:18,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22148 states and 23741 transitions. [2024-11-08 11:12:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2024-11-08 11:12:18,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:18,383 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:18,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 11:12:18,583 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,SelfDestructingSolverStorable23 [2024-11-08 11:12:18,584 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:18,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1017994241, now seen corresponding path program 1 times [2024-11-08 11:12:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135033917] [2024-11-08 11:12:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 1187 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-08 11:12:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135033917] [2024-11-08 11:12:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135033917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:19,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:12:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:12:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101522092] [2024-11-08 11:12:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:19,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:19,210 INFO L87 Difference]: Start difference. First operand 22148 states and 23741 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:19,890 INFO L93 Difference]: Finished difference Result 43563 states and 46617 transitions. [2024-11-08 11:12:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:19,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 801 [2024-11-08 11:12:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:19,915 INFO L225 Difference]: With dead ends: 43563 [2024-11-08 11:12:19,916 INFO L226 Difference]: Without dead ends: 23257 [2024-11-08 11:12:19,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:12:19,926 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 148 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:19,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 52 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:12:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23257 states. [2024-11-08 11:12:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23257 to 21044. [2024-11-08 11:12:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21044 states, 21043 states have (on average 1.0702846552297676) internal successors, (22522), 21043 states have internal predecessors, (22522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21044 states to 21044 states and 22522 transitions. [2024-11-08 11:12:20,211 INFO L78 Accepts]: Start accepts. Automaton has 21044 states and 22522 transitions. Word has length 801 [2024-11-08 11:12:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:20,211 INFO L471 AbstractCegarLoop]: Abstraction has 21044 states and 22522 transitions. [2024-11-08 11:12:20,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 21044 states and 22522 transitions. [2024-11-08 11:12:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-11-08 11:12:20,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:20,231 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:20,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 11:12:20,232 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:20,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 704676005, now seen corresponding path program 1 times [2024-11-08 11:12:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:20,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884735848] [2024-11-08 11:12:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:20,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1325 proven. 750 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-08 11:12:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884735848] [2024-11-08 11:12:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884735848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45720382] [2024-11-08 11:12:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:21,587 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) [2024-11-08 11:12:21,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 11:12:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:21,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:12:21,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1526 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2024-11-08 11:12:22,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:12:22,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45720382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:12:22,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:12:22,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 11:12:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303989795] [2024-11-08 11:12:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:12:22,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:12:22,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:12:22,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:12:22,143 INFO L87 Difference]: Start difference. First operand 21044 states and 22522 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:22,692 INFO L93 Difference]: Finished difference Result 41741 states and 44681 transitions. [2024-11-08 11:12:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:12:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 807 [2024-11-08 11:12:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:22,713 INFO L225 Difference]: With dead ends: 41741 [2024-11-08 11:12:22,713 INFO L226 Difference]: Without dead ends: 22539 [2024-11-08 11:12:22,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:12:22,726 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 94 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:22,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 303 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:12:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22539 states. [2024-11-08 11:12:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22539 to 20492. [2024-11-08 11:12:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20492 states, 20491 states have (on average 1.0707627739007368) internal successors, (21941), 20491 states have internal predecessors, (21941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20492 states to 20492 states and 21941 transitions. [2024-11-08 11:12:22,913 INFO L78 Accepts]: Start accepts. Automaton has 20492 states and 21941 transitions. Word has length 807 [2024-11-08 11:12:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:22,914 INFO L471 AbstractCegarLoop]: Abstraction has 20492 states and 21941 transitions. [2024-11-08 11:12:22,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 20492 states and 21941 transitions. [2024-11-08 11:12:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2024-11-08 11:12:22,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:12:22,927 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:22,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 11:12:23,127 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 [2024-11-08 11:12:23,128 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:12:23,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:12:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1760541586, now seen corresponding path program 1 times [2024-11-08 11:12:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:12:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10170256] [2024-11-08 11:12:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:12:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1250 proven. 96 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2024-11-08 11:12:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:12:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10170256] [2024-11-08 11:12:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10170256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:12:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640959718] [2024-11-08 11:12:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:12:23,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:12:23,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:12:23,852 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) [2024-11-08 11:12:23,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 11:12:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:12:24,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 11:12:24,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:12:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1250 proven. 96 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2024-11-08 11:12:24,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:12:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1250 proven. 96 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2024-11-08 11:12:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640959718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:12:25,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:12:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 11:12:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196403512] [2024-11-08 11:12:25,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:12:25,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 11:12:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:12:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 11:12:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:12:25,171 INFO L87 Difference]: Start difference. First operand 20492 states and 21941 transitions. Second operand has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:12:26,983 INFO L93 Difference]: Finished difference Result 45409 states and 48532 transitions. [2024-11-08 11:12:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 11:12:26,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 823 [2024-11-08 11:12:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:12:26,986 INFO L225 Difference]: With dead ends: 45409 [2024-11-08 11:12:26,986 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 11:12:27,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1649 GetRequests, 1641 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:12:27,002 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1260 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:12:27,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 93 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:12:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 11:12:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 11:12:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 11:12:27,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 823 [2024-11-08 11:12:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:12:27,004 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 11:12:27,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:12:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 11:12:27,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 11:12:27,007 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 11:12:27,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 11:12:27,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 11:12:27,211 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:12:27,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.