./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label54.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 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:15:16,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:15:16,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:15:16,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:15:16,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:15:16,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:15:16,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:15:16,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:15:16,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:15:16,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:15:16,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:15:16,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:15:16,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:15:16,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:15:16,663 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:15:16,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:15:16,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:15:16,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:15:16,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:15:16,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:15:16,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:15:16,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:15:16,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:15:16,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:15:16,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:15:16,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:15:16,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:15:16,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:15:16,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:15:16,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:15:16,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:15:16,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:15:16,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:16,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:15:16,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:15:16,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:15:16,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:15:16,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:15:16,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:15:16,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:15:16,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:15:16,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:15:16,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d [2024-10-23 21:15:16,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:15:16,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:15:16,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:15:16,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:15:16,943 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:15:16,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2024-10-23 21:15:18,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:15:18,875 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:15:18,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2024-10-23 21:15:18,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828751969/8d6f00055ebc4e98899ebdd88186155f/FLAG828a0dd48 [2024-10-23 21:15:18,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828751969/8d6f00055ebc4e98899ebdd88186155f [2024-10-23 21:15:18,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:15:18,972 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:15:18,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:18,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:15:18,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:15:18,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:18" (1/1) ... [2024-10-23 21:15:18,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582893ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:18, skipping insertion in model container [2024-10-23 21:15:18,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:18" (1/1) ... [2024-10-23 21:15:19,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:15:19,397 WARN L248 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/Problem13_label54.c[4044,4057] [2024-10-23 21:15:20,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:20,292 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:15:20,315 WARN L248 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/Problem13_label54.c[4044,4057] [2024-10-23 21:15:20,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:20,879 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:15:20,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20 WrapperNode [2024-10-23 21:15:20,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:20,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:20,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:15:20,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:15:20,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:20,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:21,515 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:15:21,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:21,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:15:21,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:15:21,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:15:21,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:21,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:21,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:21,991 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]. [2024-10-23 21:15:21,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:21,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:15:22,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:15:22,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:15:22,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:15:22,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (1/1) ... [2024-10-23 21:15:22,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:15:22,514 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) [2024-10-23 21:15:22,518 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 [2024-10-23 21:15:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:15:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:15:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:15:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:15:22,645 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:15:22,647 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:15:28,726 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:15:28,726 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:15:28,790 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:15:28,790 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:15:28,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:28 BoogieIcfgContainer [2024-10-23 21:15:28,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:15:28,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:15:28,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:15:28,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:15:28,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:15:18" (1/3) ... [2024-10-23 21:15:28,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113e9c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:28, skipping insertion in model container [2024-10-23 21:15:28,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:20" (2/3) ... [2024-10-23 21:15:28,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113e9c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:28, skipping insertion in model container [2024-10-23 21:15:28,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:28" (3/3) ... [2024-10-23 21:15:28,798 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2024-10-23 21:15:28,814 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:15:28,815 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:15:28,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:15:28,914 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;@68f43b34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:15:28,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:15:28,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-23 21:15:28,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:28,927 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] [2024-10-23 21:15:28,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:28,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 231807794, now seen corresponding path program 1 times [2024-10-23 21:15:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192943362] [2024-10-23 21:15:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192943362] [2024-10-23 21:15:29,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192943362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:29,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:29,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:29,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074101893] [2024-10-23 21:15:29,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:29,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:15:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:15:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:15:29,148 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:29,262 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:15:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:15:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-23 21:15:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:29,290 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:15:29,290 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:15:29,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:15:29,303 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:29,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:15:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:15:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:15:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:15:29,401 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 26 [2024-10-23 21:15:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:29,401 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:15:29,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:15:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-23 21:15:29,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:29,403 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] [2024-10-23 21:15:29,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:15:29,403 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:29,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 358221368, now seen corresponding path program 1 times [2024-10-23 21:15:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914807473] [2024-10-23 21:15:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:29,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:29,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914807473] [2024-10-23 21:15:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914807473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:29,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422625428] [2024-10-23 21:15:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:29,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:29,588 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:33,243 INFO L93 Difference]: Finished difference Result 2996 states and 5467 transitions. [2024-10-23 21:15:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:33,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-23 21:15:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:33,257 INFO L225 Difference]: With dead ends: 2996 [2024-10-23 21:15:33,257 INFO L226 Difference]: Without dead ends: 1963 [2024-10-23 21:15:33,260 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 [2024-10-23 21:15:33,261 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 1128 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:33,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 945 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:15:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2024-10-23 21:15:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1950. [2024-10-23 21:15:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.6541816316059517) internal successors, (3224), 1949 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3224 transitions. [2024-10-23 21:15:33,311 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3224 transitions. Word has length 26 [2024-10-23 21:15:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:33,311 INFO L471 AbstractCegarLoop]: Abstraction has 1950 states and 3224 transitions. [2024-10-23 21:15:33,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3224 transitions. [2024-10-23 21:15:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-23 21:15:33,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:33,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:33,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:15:33,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:33,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1429247058, now seen corresponding path program 1 times [2024-10-23 21:15:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:33,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499948118] [2024-10-23 21:15:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499948118] [2024-10-23 21:15:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499948118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053810283] [2024-10-23 21:15:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:33,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:33,591 INFO L87 Difference]: Start difference. First operand 1950 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:37,622 INFO L93 Difference]: Finished difference Result 5541 states and 9221 transitions. [2024-10-23 21:15:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-10-23 21:15:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:37,637 INFO L225 Difference]: With dead ends: 5541 [2024-10-23 21:15:37,638 INFO L226 Difference]: Without dead ends: 3592 [2024-10-23 21:15:37,641 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 [2024-10-23 21:15:37,642 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:37,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1007 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-23 21:15:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2024-10-23 21:15:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3580. [2024-10-23 21:15:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.5051690416317407) internal successors, (5387), 3579 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 5387 transitions. [2024-10-23 21:15:37,720 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 5387 transitions. Word has length 97 [2024-10-23 21:15:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:37,721 INFO L471 AbstractCegarLoop]: Abstraction has 3580 states and 5387 transitions. [2024-10-23 21:15:37,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 5387 transitions. [2024-10-23 21:15:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-23 21:15:37,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:37,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:37,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:15:37,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:37,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 331052725, now seen corresponding path program 1 times [2024-10-23 21:15:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701456995] [2024-10-23 21:15:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701456995] [2024-10-23 21:15:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701456995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:37,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875817009] [2024-10-23 21:15:37,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:37,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:37,979 INFO L87 Difference]: Start difference. First operand 3580 states and 5387 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:41,134 INFO L93 Difference]: Finished difference Result 10351 states and 15624 transitions. [2024-10-23 21:15:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:41,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-10-23 21:15:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:41,156 INFO L225 Difference]: With dead ends: 10351 [2024-10-23 21:15:41,157 INFO L226 Difference]: Without dead ends: 6772 [2024-10-23 21:15:41,163 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 [2024-10-23 21:15:41,164 INFO L432 NwaCegarLoop]: 1019 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:41,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1170 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:15:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2024-10-23 21:15:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6748. [2024-10-23 21:15:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6747 states have (on average 1.3253297761968281) internal successors, (8942), 6747 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8942 transitions. [2024-10-23 21:15:41,275 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8942 transitions. Word has length 111 [2024-10-23 21:15:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:41,276 INFO L471 AbstractCegarLoop]: Abstraction has 6748 states and 8942 transitions. [2024-10-23 21:15:41,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8942 transitions. [2024-10-23 21:15:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-23 21:15:41,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:41,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:41,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:15:41,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:41,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1298196711, now seen corresponding path program 1 times [2024-10-23 21:15:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337793682] [2024-10-23 21:15:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:41,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337793682] [2024-10-23 21:15:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337793682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:41,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:41,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746865618] [2024-10-23 21:15:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:41,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:41,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:41,516 INFO L87 Difference]: Start difference. First operand 6748 states and 8942 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:44,568 INFO L93 Difference]: Finished difference Result 19803 states and 26219 transitions. [2024-10-23 21:15:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-10-23 21:15:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:44,607 INFO L225 Difference]: With dead ends: 19803 [2024-10-23 21:15:44,607 INFO L226 Difference]: Without dead ends: 13056 [2024-10-23 21:15:44,618 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 [2024-10-23 21:15:44,619 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:44,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1033 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:15:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2024-10-23 21:15:44,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 13051. [2024-10-23 21:15:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13051 states, 13050 states have (on average 1.2179310344827585) internal successors, (15894), 13050 states have internal predecessors, (15894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13051 states to 13051 states and 15894 transitions. [2024-10-23 21:15:44,829 INFO L78 Accepts]: Start accepts. Automaton has 13051 states and 15894 transitions. Word has length 140 [2024-10-23 21:15:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:44,830 INFO L471 AbstractCegarLoop]: Abstraction has 13051 states and 15894 transitions. [2024-10-23 21:15:44,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13051 states and 15894 transitions. [2024-10-23 21:15:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-23 21:15:44,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:44,833 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:15:44,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:15:44,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -93705797, now seen corresponding path program 1 times [2024-10-23 21:15:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122080640] [2024-10-23 21:15:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 21:15:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122080640] [2024-10-23 21:15:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122080640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:45,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:45,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:45,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072042479] [2024-10-23 21:15:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:45,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:45,313 INFO L87 Difference]: Start difference. First operand 13051 states and 15894 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:47,817 INFO L93 Difference]: Finished difference Result 26888 states and 32589 transitions. [2024-10-23 21:15:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:47,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 218 [2024-10-23 21:15:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:47,843 INFO L225 Difference]: With dead ends: 26888 [2024-10-23 21:15:47,844 INFO L226 Difference]: Without dead ends: 13838 [2024-10-23 21:15:47,860 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 [2024-10-23 21:15:47,861 INFO L432 NwaCegarLoop]: 1082 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:47,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1211 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:15:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2024-10-23 21:15:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 13838. [2024-10-23 21:15:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13838 states, 13837 states have (on average 1.2058972320589723) internal successors, (16686), 13837 states have internal predecessors, (16686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13838 states to 13838 states and 16686 transitions. [2024-10-23 21:15:48,059 INFO L78 Accepts]: Start accepts. Automaton has 13838 states and 16686 transitions. Word has length 218 [2024-10-23 21:15:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:48,060 INFO L471 AbstractCegarLoop]: Abstraction has 13838 states and 16686 transitions. [2024-10-23 21:15:48,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 13838 states and 16686 transitions. [2024-10-23 21:15:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-10-23 21:15:48,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:48,064 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:15:48,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:15:48,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:48,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2001769124, now seen corresponding path program 1 times [2024-10-23 21:15:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718163955] [2024-10-23 21:15:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:48,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:48,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:48,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718163955] [2024-10-23 21:15:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718163955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:48,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440603450] [2024-10-23 21:15:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:48,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:48,373 INFO L87 Difference]: Start difference. First operand 13838 states and 16686 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:51,323 INFO L93 Difference]: Finished difference Result 33199 states and 41057 transitions. [2024-10-23 21:15:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:51,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2024-10-23 21:15:51,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:51,358 INFO L225 Difference]: With dead ends: 33199 [2024-10-23 21:15:51,358 INFO L226 Difference]: Without dead ends: 20149 [2024-10-23 21:15:51,374 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 [2024-10-23 21:15:51,375 INFO L432 NwaCegarLoop]: 821 mSDtfsCounter, 860 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:51,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 941 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:15:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20149 states. [2024-10-23 21:15:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20149 to 20139. [2024-10-23 21:15:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20139 states, 20138 states have (on average 1.1898897606515046) internal successors, (23962), 20138 states have internal predecessors, (23962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20139 states to 20139 states and 23962 transitions. [2024-10-23 21:15:51,599 INFO L78 Accepts]: Start accepts. Automaton has 20139 states and 23962 transitions. Word has length 225 [2024-10-23 21:15:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:51,600 INFO L471 AbstractCegarLoop]: Abstraction has 20139 states and 23962 transitions. [2024-10-23 21:15:51,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 20139 states and 23962 transitions. [2024-10-23 21:15:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-23 21:15:51,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:51,603 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:15:51,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:15:51,604 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:51,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -405941161, now seen corresponding path program 1 times [2024-10-23 21:15:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080357837] [2024-10-23 21:15:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080357837] [2024-10-23 21:15:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080357837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:51,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:51,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469617816] [2024-10-23 21:15:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:51,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:51,784 INFO L87 Difference]: Start difference. First operand 20139 states and 23962 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:54,728 INFO L93 Difference]: Finished difference Result 39360 states and 46952 transitions. [2024-10-23 21:15:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:54,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2024-10-23 21:15:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:54,763 INFO L225 Difference]: With dead ends: 39360 [2024-10-23 21:15:54,764 INFO L226 Difference]: Without dead ends: 20009 [2024-10-23 21:15:54,778 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 [2024-10-23 21:15:54,779 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 1037 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:54,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1639 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:15:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2024-10-23 21:15:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 19219. [2024-10-23 21:15:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19219 states, 19218 states have (on average 1.1321677593922364) internal successors, (21758), 19218 states have internal predecessors, (21758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19219 states to 19219 states and 21758 transitions. [2024-10-23 21:15:55,000 INFO L78 Accepts]: Start accepts. Automaton has 19219 states and 21758 transitions. Word has length 240 [2024-10-23 21:15:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:55,001 INFO L471 AbstractCegarLoop]: Abstraction has 19219 states and 21758 transitions. [2024-10-23 21:15:55,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 19219 states and 21758 transitions. [2024-10-23 21:15:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-10-23 21:15:55,006 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:55,006 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:55,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:15:55,007 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:55,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1695475449, now seen corresponding path program 1 times [2024-10-23 21:15:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:55,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912040509] [2024-10-23 21:15:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:15:55,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:55,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912040509] [2024-10-23 21:15:55,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912040509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:55,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:55,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:55,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666948171] [2024-10-23 21:15:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:55,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:55,263 INFO L87 Difference]: Start difference. First operand 19219 states and 21758 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:58,356 INFO L93 Difference]: Finished difference Result 43954 states and 50451 transitions. [2024-10-23 21:15:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2024-10-23 21:15:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:58,387 INFO L225 Difference]: With dead ends: 43954 [2024-10-23 21:15:58,387 INFO L226 Difference]: Without dead ends: 25523 [2024-10-23 21:15:58,407 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 [2024-10-23 21:15:58,409 INFO L432 NwaCegarLoop]: 1775 mSDtfsCounter, 841 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:58,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1916 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:15:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25523 states. [2024-10-23 21:15:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25523 to 24732. [2024-10-23 21:15:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24732 states, 24731 states have (on average 1.1185960939711292) internal successors, (27664), 24731 states have internal predecessors, (27664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24732 states to 24732 states and 27664 transitions. [2024-10-23 21:15:58,865 INFO L78 Accepts]: Start accepts. Automaton has 24732 states and 27664 transitions. Word has length 314 [2024-10-23 21:15:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:58,866 INFO L471 AbstractCegarLoop]: Abstraction has 24732 states and 27664 transitions. [2024-10-23 21:15:58,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 24732 states and 27664 transitions. [2024-10-23 21:15:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-23 21:15:58,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:58,874 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:58,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:15:58,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:58,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -947988761, now seen corresponding path program 1 times [2024-10-23 21:15:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765329286] [2024-10-23 21:15:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 21:15:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765329286] [2024-10-23 21:15:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765329286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:59,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:59,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916948698] [2024-10-23 21:15:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:59,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:15:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:59,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:15:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:15:59,262 INFO L87 Difference]: Start difference. First operand 24732 states and 27664 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:04,970 INFO L93 Difference]: Finished difference Result 91375 states and 102286 transitions. [2024-10-23 21:16:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:16:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2024-10-23 21:16:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:05,040 INFO L225 Difference]: With dead ends: 91375 [2024-10-23 21:16:05,040 INFO L226 Difference]: Without dead ends: 67431 [2024-10-23 21:16:05,067 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 [2024-10-23 21:16:05,067 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 1718 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6002 mSolverCounterSat, 1098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1098 IncrementalHoareTripleChecker+Valid, 6002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:05,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 761 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1098 Valid, 6002 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-10-23 21:16:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67431 states. [2024-10-23 21:16:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67431 to 64948. [2024-10-23 21:16:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64948 states, 64947 states have (on average 1.1045621814710456) internal successors, (71738), 64947 states have internal predecessors, (71738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64948 states to 64948 states and 71738 transitions. [2024-10-23 21:16:05,861 INFO L78 Accepts]: Start accepts. Automaton has 64948 states and 71738 transitions. Word has length 323 [2024-10-23 21:16:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:05,861 INFO L471 AbstractCegarLoop]: Abstraction has 64948 states and 71738 transitions. [2024-10-23 21:16:05,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 64948 states and 71738 transitions. [2024-10-23 21:16:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-23 21:16:05,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:05,867 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:05,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:16:05,867 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:05,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -707130468, now seen corresponding path program 1 times [2024-10-23 21:16:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760909271] [2024-10-23 21:16:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-23 21:16:06,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760909271] [2024-10-23 21:16:06,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760909271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:06,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:06,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:16:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283350893] [2024-10-23 21:16:06,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:06,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:06,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:06,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:06,235 INFO L87 Difference]: Start difference. First operand 64948 states and 71738 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:09,598 INFO L93 Difference]: Finished difference Result 142509 states and 156965 transitions. [2024-10-23 21:16:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2024-10-23 21:16:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:09,683 INFO L225 Difference]: With dead ends: 142509 [2024-10-23 21:16:09,683 INFO L226 Difference]: Without dead ends: 77562 [2024-10-23 21:16:09,717 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 [2024-10-23 21:16:09,718 INFO L432 NwaCegarLoop]: 998 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:09,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1173 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:16:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77562 states. [2024-10-23 21:16:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77562 to 75977. [2024-10-23 21:16:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75977 states, 75976 states have (on average 1.0951484679372434) internal successors, (83205), 75976 states have internal predecessors, (83205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75977 states to 75977 states and 83205 transitions. [2024-10-23 21:16:10,733 INFO L78 Accepts]: Start accepts. Automaton has 75977 states and 83205 transitions. Word has length 323 [2024-10-23 21:16:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:10,733 INFO L471 AbstractCegarLoop]: Abstraction has 75977 states and 83205 transitions. [2024-10-23 21:16:10,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 75977 states and 83205 transitions. [2024-10-23 21:16:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-10-23 21:16:10,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:10,738 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:10,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:16:10,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:10,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1124834510, now seen corresponding path program 1 times [2024-10-23 21:16:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134122215] [2024-10-23 21:16:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:10,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 21:16:12,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134122215] [2024-10-23 21:16:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134122215] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3066684] [2024-10-23 21:16:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:12,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:12,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:12,407 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) [2024-10-23 21:16:12,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:16:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:12,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:16:12,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-23 21:16:12,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3066684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:12,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:16:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172766536] [2024-10-23 21:16:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:12,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:12,774 INFO L87 Difference]: Start difference. First operand 75977 states and 83205 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:15,711 INFO L93 Difference]: Finished difference Result 151164 states and 165616 transitions. [2024-10-23 21:16:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:15,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 352 [2024-10-23 21:16:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:15,789 INFO L225 Difference]: With dead ends: 151164 [2024-10-23 21:16:15,789 INFO L226 Difference]: Without dead ends: 75975 [2024-10-23 21:16:15,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:15,827 INFO L432 NwaCegarLoop]: 1339 mSDtfsCounter, 1112 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:15,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1417 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:16:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75975 states. [2024-10-23 21:16:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75975 to 75974. [2024-10-23 21:16:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75974 states, 75973 states have (on average 1.075869058744554) internal successors, (81737), 75973 states have internal predecessors, (81737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75974 states to 75974 states and 81737 transitions. [2024-10-23 21:16:16,826 INFO L78 Accepts]: Start accepts. Automaton has 75974 states and 81737 transitions. Word has length 352 [2024-10-23 21:16:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:16,827 INFO L471 AbstractCegarLoop]: Abstraction has 75974 states and 81737 transitions. [2024-10-23 21:16:16,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 75974 states and 81737 transitions. [2024-10-23 21:16:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-10-23 21:16:16,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:16,833 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:16,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:16:17,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 21:16:17,034 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:17,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1949962769, now seen corresponding path program 1 times [2024-10-23 21:16:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243793028] [2024-10-23 21:16:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:16:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243793028] [2024-10-23 21:16:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243793028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:17,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882296222] [2024-10-23 21:16:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:17,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:17,558 INFO L87 Difference]: Start difference. First operand 75974 states and 81737 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:21,115 INFO L93 Difference]: Finished difference Result 171630 states and 185875 transitions. [2024-10-23 21:16:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-10-23 21:16:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:21,232 INFO L225 Difference]: With dead ends: 171630 [2024-10-23 21:16:21,232 INFO L226 Difference]: Without dead ends: 96444 [2024-10-23 21:16:21,280 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 [2024-10-23 21:16:21,281 INFO L432 NwaCegarLoop]: 797 mSDtfsCounter, 890 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:21,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 879 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:16:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96444 states. [2024-10-23 21:16:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96444 to 93278. [2024-10-23 21:16:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93278 states, 93277 states have (on average 1.0808237829261234) internal successors, (100816), 93277 states have internal predecessors, (100816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93278 states to 93278 states and 100816 transitions. [2024-10-23 21:16:22,363 INFO L78 Accepts]: Start accepts. Automaton has 93278 states and 100816 transitions. Word has length 382 [2024-10-23 21:16:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:22,364 INFO L471 AbstractCegarLoop]: Abstraction has 93278 states and 100816 transitions. [2024-10-23 21:16:22,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 93278 states and 100816 transitions. [2024-10-23 21:16:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-23 21:16:22,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:22,371 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:22,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:16:22,372 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:22,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2093857876, now seen corresponding path program 1 times [2024-10-23 21:16:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386740493] [2024-10-23 21:16:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:16:22,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:22,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386740493] [2024-10-23 21:16:22,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386740493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:22,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:22,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:22,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038333018] [2024-10-23 21:16:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:22,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:22,875 INFO L87 Difference]: Start difference. First operand 93278 states and 100816 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:26,422 INFO L93 Difference]: Finished difference Result 185776 states and 200857 transitions. [2024-10-23 21:16:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 420 [2024-10-23 21:16:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:26,560 INFO L225 Difference]: With dead ends: 185776 [2024-10-23 21:16:26,560 INFO L226 Difference]: Without dead ends: 93286 [2024-10-23 21:16:26,617 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 [2024-10-23 21:16:26,618 INFO L432 NwaCegarLoop]: 1697 mSDtfsCounter, 794 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:26,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1838 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:16:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93286 states. [2024-10-23 21:16:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93286 to 92481. [2024-10-23 21:16:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92481 states, 92480 states have (on average 1.0581206747404843) internal successors, (97855), 92480 states have internal predecessors, (97855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 97855 transitions. [2024-10-23 21:16:27,735 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 97855 transitions. Word has length 420 [2024-10-23 21:16:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:27,736 INFO L471 AbstractCegarLoop]: Abstraction has 92481 states and 97855 transitions. [2024-10-23 21:16:27,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 97855 transitions. [2024-10-23 21:16:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-10-23 21:16:27,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:27,744 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:27,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:16:27,744 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:27,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -644646087, now seen corresponding path program 1 times [2024-10-23 21:16:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917743072] [2024-10-23 21:16:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 290 proven. 110 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 21:16:29,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917743072] [2024-10-23 21:16:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917743072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253510899] [2024-10-23 21:16:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:29,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:29,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:29,401 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) [2024-10-23 21:16:29,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:16:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:29,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:16:29,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:16:29,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253510899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:29,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:16:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623101293] [2024-10-23 21:16:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:29,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:16:29,828 INFO L87 Difference]: Start difference. First operand 92481 states and 97855 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:32,934 INFO L93 Difference]: Finished difference Result 180994 states and 192681 transitions. [2024-10-23 21:16:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:32,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 456 [2024-10-23 21:16:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:33,052 INFO L225 Difference]: With dead ends: 180994 [2024-10-23 21:16:33,052 INFO L226 Difference]: Without dead ends: 102687 [2024-10-23 21:16:33,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:16:33,088 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1127 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:33,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 365 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:16:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102687 states. [2024-10-23 21:16:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102687 to 102687. [2024-10-23 21:16:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102687 states, 102686 states have (on average 1.0576027890851722) internal successors, (108601), 102686 states have internal predecessors, (108601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102687 states to 102687 states and 108601 transitions. [2024-10-23 21:16:34,174 INFO L78 Accepts]: Start accepts. Automaton has 102687 states and 108601 transitions. Word has length 456 [2024-10-23 21:16:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:34,174 INFO L471 AbstractCegarLoop]: Abstraction has 102687 states and 108601 transitions. [2024-10-23 21:16:34,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 102687 states and 108601 transitions. [2024-10-23 21:16:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-10-23 21:16:34,184 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:34,184 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:34,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0