./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/Problem18_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/Problem18_label14.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 a02231a91e38821a474a995aa0f6354f8b6e8aefa7ca1b1921ca101a19abba9e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:00:49,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:00:49,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 00:00:49,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:00:49,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:00:49,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:00:49,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:00:49,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:00:49,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:00:49,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:00:49,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:00:49,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:00:49,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:00:49,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:00:49,687 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:00:49,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:00:49,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:00:49,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:00:49,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 00:00:49,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:00:49,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:00:49,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:00:49,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:00:49,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:00:49,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:00:49,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:00:49,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:00:49,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:00:49,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:00:49,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:00:49,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:00:49,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:00:49,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:00:49,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:00:49,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:00:49,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:00:49,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 00:00:49,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 00:00:49,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:00:49,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:00:49,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:00:49,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:00:49,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a02231a91e38821a474a995aa0f6354f8b6e8aefa7ca1b1921ca101a19abba9e [2024-10-14 00:00:49,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:00:49,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:00:49,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:00:49,996 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:00:49,996 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:00:49,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label14.c [2024-10-14 00:00:51,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:00:51,939 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:00:51,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label14.c [2024-10-14 00:00:51,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29fc1652c/3477587e58f44087a847c086ae29245f/FLAGe3388e203 [2024-10-14 00:00:52,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29fc1652c/3477587e58f44087a847c086ae29245f [2024-10-14 00:00:52,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:00:52,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:00:52,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:00:52,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:00:52,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:00:52,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:00:52" (1/1) ... [2024-10-14 00:00:52,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed05cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:52, skipping insertion in model container [2024-10-14 00:00:52,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:00:52" (1/1) ... [2024-10-14 00:00:52,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:00:52,326 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/Problem18_label14.c[5298,5311] [2024-10-14 00:00:52,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:00:52,915 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:00:52,943 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/Problem18_label14.c[5298,5311] [2024-10-14 00:00:53,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:00:53,260 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:00:53,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53 WrapperNode [2024-10-14 00:00:53,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:00:53,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:00:53,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:00:53,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:00:53,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,531 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-10-14 00:00:53,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:00:53,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:00:53,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:00:53,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:00:53,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,670 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]. [2024-10-14 00:00:53,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:53,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:54,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:00:54,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:00:54,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:00:54,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:00:54,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (1/1) ... [2024-10-14 00:00:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:00:54,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:00:54,043 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) [2024-10-14 00:00:54,049 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 [2024-10-14 00:00:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:00:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 00:00:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:00:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:00:54,152 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:00:54,154 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:00:57,428 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-10-14 00:00:57,429 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:00:57,491 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:00:57,492 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 00:00:57,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:57 BoogieIcfgContainer [2024-10-14 00:00:57,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:00:57,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:00:57,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:00:57,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:00:57,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:00:52" (1/3) ... [2024-10-14 00:00:57,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb73b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:57, skipping insertion in model container [2024-10-14 00:00:57,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:53" (2/3) ... [2024-10-14 00:00:57,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb73b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:57, skipping insertion in model container [2024-10-14 00:00:57,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:57" (3/3) ... [2024-10-14 00:00:57,502 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label14.c [2024-10-14 00:00:57,522 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:00:57,522 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:00:57,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:00:57,642 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;@63966164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:00:57,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:00:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:00:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 00:00:57,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:00:57,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:00:57,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:00:57,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:00:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -668401246, now seen corresponding path program 1 times [2024-10-14 00:00:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:00:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913789331] [2024-10-14 00:00:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:00:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:00:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:00:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:00:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:00:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913789331] [2024-10-14 00:00:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913789331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:00:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:00:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:00:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674597867] [2024-10-14 00:00:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:00:57,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 00:00:57,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:00:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 00:00:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 00:00:57,927 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:00:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:00:58,030 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2024-10-14 00:00:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 00:00:58,041 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-10-14 00:00:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:00:58,063 INFO L225 Difference]: With dead ends: 1389 [2024-10-14 00:00:58,063 INFO L226 Difference]: Without dead ends: 693 [2024-10-14 00:00:58,072 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 [2024-10-14 00:00:58,078 INFO L432 NwaCegarLoop]: 1317 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, 1317 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 [2024-10-14 00:00:58,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 00:00:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-14 00:00:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2024-10-14 00:00:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:00:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2024-10-14 00:00:58,159 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 49 [2024-10-14 00:00:58,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:00:58,160 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2024-10-14 00:00:58,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:00:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2024-10-14 00:00:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 00:00:58,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:00:58,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:00:58,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 00:00:58,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:00:58,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:00:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1169390933, now seen corresponding path program 1 times [2024-10-14 00:00:58,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:00:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674626752] [2024-10-14 00:00:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:00:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:00:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:00:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:00:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:00:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674626752] [2024-10-14 00:00:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674626752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:00:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:00:58,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:00:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932724408] [2024-10-14 00:00:58,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:00:58,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:00:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:00:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:00:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:00:58,359 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:01,272 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2024-10-14 00:01:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-10-14 00:01:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:01,287 INFO L225 Difference]: With dead ends: 2075 [2024-10-14 00:01:01,287 INFO L226 Difference]: Without dead ends: 1383 [2024-10-14 00:01:01,289 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 [2024-10-14 00:01:01,290 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 726 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:01,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 435 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-14 00:01:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-10-14 00:01:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2024-10-14 00:01:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5998552821997105) internal successors, (2211), 1382 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2211 transitions. [2024-10-14 00:01:01,340 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2211 transitions. Word has length 49 [2024-10-14 00:01:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:01,340 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2211 transitions. [2024-10-14 00:01:01,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2211 transitions. [2024-10-14 00:01:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-14 00:01:01,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:01,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:01,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 00:01:01,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash -117131313, now seen corresponding path program 1 times [2024-10-14 00:01:01,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950147202] [2024-10-14 00:01:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:01,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950147202] [2024-10-14 00:01:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950147202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:01:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605279753] [2024-10-14 00:01:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:01,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:01:01,566 INFO L87 Difference]: Start difference. First operand 1383 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:04,280 INFO L93 Difference]: Finished difference Result 4145 states and 6630 transitions. [2024-10-14 00:01:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-10-14 00:01:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:04,292 INFO L225 Difference]: With dead ends: 4145 [2024-10-14 00:01:04,293 INFO L226 Difference]: Without dead ends: 2763 [2024-10-14 00:01:04,296 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 [2024-10-14 00:01:04,299 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:04,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-14 00:01:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-10-14 00:01:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2024-10-14 00:01:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3504706734250542) internal successors, (3730), 2762 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3730 transitions. [2024-10-14 00:01:04,371 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3730 transitions. Word has length 114 [2024-10-14 00:01:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:04,372 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3730 transitions. [2024-10-14 00:01:04,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3730 transitions. [2024-10-14 00:01:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-14 00:01:04,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:04,381 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-14 00:01:04,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 00:01:04,382 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:04,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1097897992, now seen corresponding path program 1 times [2024-10-14 00:01:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229302349] [2024-10-14 00:01:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 00:01:05,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:05,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229302349] [2024-10-14 00:01:05,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229302349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:05,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:05,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:01:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706292401] [2024-10-14 00:01:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:05,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:01:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:01:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:01:05,082 INFO L87 Difference]: Start difference. First operand 2763 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:08,610 INFO L93 Difference]: Finished difference Result 6905 states and 9073 transitions. [2024-10-14 00:01:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:01:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 232 [2024-10-14 00:01:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:08,627 INFO L225 Difference]: With dead ends: 6905 [2024-10-14 00:01:08,627 INFO L226 Difference]: Without dead ends: 4143 [2024-10-14 00:01:08,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:01:08,636 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:08,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 638 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-14 00:01:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-10-14 00:01:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2024-10-14 00:01:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2467407049734427) internal successors, (5164), 4142 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5164 transitions. [2024-10-14 00:01:08,715 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5164 transitions. Word has length 232 [2024-10-14 00:01:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:08,716 INFO L471 AbstractCegarLoop]: Abstraction has 4143 states and 5164 transitions. [2024-10-14 00:01:08,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5164 transitions. [2024-10-14 00:01:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-14 00:01:08,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:08,720 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:08,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 00:01:08,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:08,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 612974277, now seen corresponding path program 1 times [2024-10-14 00:01:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977417622] [2024-10-14 00:01:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 00:01:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977417622] [2024-10-14 00:01:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977417622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238343661] [2024-10-14 00:01:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:09,271 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) [2024-10-14 00:01:09,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 00:01:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:09,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:01:09,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:09,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238343661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:09,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-14 00:01:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244512753] [2024-10-14 00:01:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:09,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:09,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:01:09,556 INFO L87 Difference]: Start difference. First operand 4143 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:11,990 INFO L93 Difference]: Finished difference Result 11735 states and 14757 transitions. [2024-10-14 00:01:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 348 [2024-10-14 00:01:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:12,015 INFO L225 Difference]: With dead ends: 11735 [2024-10-14 00:01:12,015 INFO L226 Difference]: Without dead ends: 7593 [2024-10-14 00:01:12,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:01:12,024 INFO L432 NwaCegarLoop]: 815 mSDtfsCounter, 656 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:12,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 821 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 00:01:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2024-10-14 00:01:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7593. [2024-10-14 00:01:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.2413066385669125) internal successors, (9424), 7592 states have internal predecessors, (9424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9424 transitions. [2024-10-14 00:01:12,169 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9424 transitions. Word has length 348 [2024-10-14 00:01:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:12,172 INFO L471 AbstractCegarLoop]: Abstraction has 7593 states and 9424 transitions. [2024-10-14 00:01:12,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9424 transitions. [2024-10-14 00:01:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-10-14 00:01:12,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:12,178 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:12,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 00:01:12,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:12,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:12,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash -941310872, now seen corresponding path program 1 times [2024-10-14 00:01:12,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:12,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29788357] [2024-10-14 00:01:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 00:01:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29788357] [2024-10-14 00:01:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29788357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187638677] [2024-10-14 00:01:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:12,851 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) [2024-10-14 00:01:12,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 00:01:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:12,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:01:13,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:13,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187638677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-14 00:01:13,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102821345] [2024-10-14 00:01:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:13,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:01:13,097 INFO L87 Difference]: Start difference. First operand 7593 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:15,409 INFO L93 Difference]: Finished difference Result 17255 states and 21873 transitions. [2024-10-14 00:01:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:15,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 355 [2024-10-14 00:01:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:15,451 INFO L225 Difference]: With dead ends: 17255 [2024-10-14 00:01:15,451 INFO L226 Difference]: Without dead ends: 10353 [2024-10-14 00:01:15,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:01:15,465 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 657 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:15,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 98 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-14 00:01:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2024-10-14 00:01:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 9663. [2024-10-14 00:01:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9663 states, 9662 states have (on average 1.2808942247981785) internal successors, (12376), 9662 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 12376 transitions. [2024-10-14 00:01:15,684 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 12376 transitions. Word has length 355 [2024-10-14 00:01:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:15,686 INFO L471 AbstractCegarLoop]: Abstraction has 9663 states and 12376 transitions. [2024-10-14 00:01:15,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 12376 transitions. [2024-10-14 00:01:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-10-14 00:01:15,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:15,696 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:15,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 00:01:15,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 00:01:15,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:15,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -692151263, now seen corresponding path program 1 times [2024-10-14 00:01:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072810766] [2024-10-14 00:01:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 00:01:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072810766] [2024-10-14 00:01:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072810766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:16,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:01:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107695287] [2024-10-14 00:01:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:16,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:01:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:01:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:01:16,336 INFO L87 Difference]: Start difference. First operand 9663 states and 12376 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:18,714 INFO L93 Difference]: Finished difference Result 20758 states and 26232 transitions. [2024-10-14 00:01:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:01:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 414 [2024-10-14 00:01:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:18,739 INFO L225 Difference]: With dead ends: 20758 [2024-10-14 00:01:18,740 INFO L226 Difference]: Without dead ends: 11733 [2024-10-14 00:01:18,750 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 [2024-10-14 00:01:18,753 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:18,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 634 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 00:01:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2024-10-14 00:01:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11733. [2024-10-14 00:01:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11732 states have (on average 1.1783157176951926) internal successors, (13824), 11732 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 13824 transitions. [2024-10-14 00:01:18,942 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 13824 transitions. Word has length 414 [2024-10-14 00:01:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:18,942 INFO L471 AbstractCegarLoop]: Abstraction has 11733 states and 13824 transitions. [2024-10-14 00:01:18,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 13824 transitions. [2024-10-14 00:01:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-10-14 00:01:18,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:18,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:18,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 00:01:18,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:18,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1005725927, now seen corresponding path program 1 times [2024-10-14 00:01:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:18,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302186275] [2024-10-14 00:01:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:19,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302186275] [2024-10-14 00:01:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302186275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:19,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:19,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:01:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752792850] [2024-10-14 00:01:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:19,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:01:19,656 INFO L87 Difference]: Start difference. First operand 11733 states and 13824 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:21,550 INFO L93 Difference]: Finished difference Result 26915 states and 31730 transitions. [2024-10-14 00:01:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 441 [2024-10-14 00:01:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:21,579 INFO L225 Difference]: With dead ends: 26915 [2024-10-14 00:01:21,580 INFO L226 Difference]: Without dead ends: 15873 [2024-10-14 00:01:21,593 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 [2024-10-14 00:01:21,595 INFO L432 NwaCegarLoop]: 1116 mSDtfsCounter, 598 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:21,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1122 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 00:01:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2024-10-14 00:01:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15183. [2024-10-14 00:01:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 1.1580819391384534) internal successors, (17582), 15182 states have internal predecessors, (17582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 17582 transitions. [2024-10-14 00:01:21,795 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 17582 transitions. Word has length 441 [2024-10-14 00:01:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:21,796 INFO L471 AbstractCegarLoop]: Abstraction has 15183 states and 17582 transitions. [2024-10-14 00:01:21,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 17582 transitions. [2024-10-14 00:01:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-14 00:01:21,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:21,808 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:21,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 00:01:21,809 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:21,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash 624521822, now seen corresponding path program 1 times [2024-10-14 00:01:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265642978] [2024-10-14 00:01:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 00:01:22,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:22,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265642978] [2024-10-14 00:01:22,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265642978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:22,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:22,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:01:22,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971318065] [2024-10-14 00:01:22,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:22,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:22,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:22,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:01:22,187 INFO L87 Difference]: Start difference. First operand 15183 states and 17582 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:24,103 INFO L93 Difference]: Finished difference Result 38645 states and 45557 transitions. [2024-10-14 00:01:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 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 446 [2024-10-14 00:01:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:24,144 INFO L225 Difference]: With dead ends: 38645 [2024-10-14 00:01:24,144 INFO L226 Difference]: Without dead ends: 24153 [2024-10-14 00:01:24,162 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 [2024-10-14 00:01:24,163 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 398 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:24,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 424 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 00:01:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24153 states. [2024-10-14 00:01:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24153 to 22773. [2024-10-14 00:01:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.1311259441419286) internal successors, (25758), 22772 states have internal predecessors, (25758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 25758 transitions. [2024-10-14 00:01:24,492 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 25758 transitions. Word has length 446 [2024-10-14 00:01:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:24,493 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 25758 transitions. [2024-10-14 00:01:24,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 25758 transitions. [2024-10-14 00:01:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-10-14 00:01:24,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:24,498 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:24,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 00:01:24,498 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:24,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2066241622, now seen corresponding path program 1 times [2024-10-14 00:01:24,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:24,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814600450] [2024-10-14 00:01:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814600450] [2024-10-14 00:01:25,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814600450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401477107] [2024-10-14 00:01:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:25,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:25,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:01:25,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 00:01:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:25,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:01:25,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 00:01:25,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:25,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401477107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:25,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:25,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-14 00:01:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858540317] [2024-10-14 00:01:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:25,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:01:25,930 INFO L87 Difference]: Start difference. First operand 22773 states and 25758 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:27,907 INFO L93 Difference]: Finished difference Result 44855 states and 50822 transitions. [2024-10-14 00:01:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 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 448 [2024-10-14 00:01:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:27,946 INFO L225 Difference]: With dead ends: 44855 [2024-10-14 00:01:27,947 INFO L226 Difference]: Without dead ends: 22773 [2024-10-14 00:01:27,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:01:27,969 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 405 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:27,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 326 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 00:01:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2024-10-14 00:01:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 22773. [2024-10-14 00:01:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.0988933778324257) internal successors, (25024), 22772 states have internal predecessors, (25024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 25024 transitions. [2024-10-14 00:01:28,247 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 25024 transitions. Word has length 448 [2024-10-14 00:01:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:28,249 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 25024 transitions. [2024-10-14 00:01:28,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 25024 transitions. [2024-10-14 00:01:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2024-10-14 00:01:28,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:28,259 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:28,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 00:01:28,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:28,460 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:28,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1591794018, now seen corresponding path program 1 times [2024-10-14 00:01:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135802749] [2024-10-14 00:01:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 353 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135802749] [2024-10-14 00:01:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135802749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010921422] [2024-10-14 00:01:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:30,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:30,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:01:30,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 00:01:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:30,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 00:01:30,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-10-14 00:01:31,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:31,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010921422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:31,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:31,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-14 00:01:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164745201] [2024-10-14 00:01:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:31,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:01:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:31,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:01:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:01:31,964 INFO L87 Difference]: Start difference. First operand 22773 states and 25024 transitions. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:34,765 INFO L93 Difference]: Finished difference Result 53135 states and 58907 transitions. [2024-10-14 00:01:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:01:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 963 [2024-10-14 00:01:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:34,876 INFO L225 Difference]: With dead ends: 53135 [2024-10-14 00:01:34,877 INFO L226 Difference]: Without dead ends: 31053 [2024-10-14 00:01:34,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:01:34,898 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1029 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 1312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1312 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:34,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 92 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1312 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-14 00:01:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31053 states. [2024-10-14 00:01:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31053 to 27603. [2024-10-14 00:01:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27603 states, 27602 states have (on average 1.1107166147380625) internal successors, (30658), 27602 states have internal predecessors, (30658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27603 states to 27603 states and 30658 transitions. [2024-10-14 00:01:35,249 INFO L78 Accepts]: Start accepts. Automaton has 27603 states and 30658 transitions. Word has length 963 [2024-10-14 00:01:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:35,250 INFO L471 AbstractCegarLoop]: Abstraction has 27603 states and 30658 transitions. [2024-10-14 00:01:35,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 27603 states and 30658 transitions. [2024-10-14 00:01:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2024-10-14 00:01:35,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:35,261 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:35,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 00:01:35,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:35,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:35,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1379462274, now seen corresponding path program 1 times [2024-10-14 00:01:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:35,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380903685] [2024-10-14 00:01:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:35,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-14 00:01:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380903685] [2024-10-14 00:01:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380903685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:01:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229098111] [2024-10-14 00:01:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:36,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:36,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:01:36,283 INFO L87 Difference]: Start difference. First operand 27603 states and 30658 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:38,245 INFO L93 Difference]: Finished difference Result 65555 states and 73585 transitions. [2024-10-14 00:01:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 977 [2024-10-14 00:01:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:38,304 INFO L225 Difference]: With dead ends: 65555 [2024-10-14 00:01:38,305 INFO L226 Difference]: Without dead ends: 38643 [2024-10-14 00:01:38,336 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 [2024-10-14 00:01:38,338 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 664 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:38,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 222 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 00:01:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38643 states. [2024-10-14 00:01:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38643 to 37953. [2024-10-14 00:01:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37953 states, 37952 states have (on average 1.1088480185497471) internal successors, (42083), 37952 states have internal predecessors, (42083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37953 states to 37953 states and 42083 transitions. [2024-10-14 00:01:38,957 INFO L78 Accepts]: Start accepts. Automaton has 37953 states and 42083 transitions. Word has length 977 [2024-10-14 00:01:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:38,958 INFO L471 AbstractCegarLoop]: Abstraction has 37953 states and 42083 transitions. [2024-10-14 00:01:38,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 37953 states and 42083 transitions. [2024-10-14 00:01:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2024-10-14 00:01:38,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:38,969 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:38,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 00:01:38,970 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:38,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:38,971 INFO L85 PathProgramCache]: Analyzing trace with hash 192383392, now seen corresponding path program 1 times [2024-10-14 00:01:38,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:38,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434264401] [2024-10-14 00:01:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 513 proven. 531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:01:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:41,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434264401] [2024-10-14 00:01:41,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434264401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:41,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219523312] [2024-10-14 00:01:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:41,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:41,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:41,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:01:41,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 00:01:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:41,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 00:01:41,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-14 00:01:42,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:42,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219523312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:42,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:42,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-14 00:01:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393404980] [2024-10-14 00:01:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:42,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:01:42,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:01:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 00:01:42,681 INFO L87 Difference]: Start difference. First operand 37953 states and 42083 transitions. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:45,926 INFO L93 Difference]: Finished difference Result 84185 states and 93684 transitions. [2024-10-14 00:01:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:01:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 1095 [2024-10-14 00:01:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:45,980 INFO L225 Difference]: With dead ends: 84185 [2024-10-14 00:01:45,981 INFO L226 Difference]: Without dead ends: 46923 [2024-10-14 00:01:46,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1093 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 00:01:46,013 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 1069 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 1461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 4241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1461 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:46,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 113 Invalid, 4241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1461 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-14 00:01:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46923 states. [2024-10-14 00:01:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46923 to 42093. [2024-10-14 00:01:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42093 states, 42092 states have (on average 1.1175757863727074) internal successors, (47041), 42092 states have internal predecessors, (47041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42093 states to 42093 states and 47041 transitions. [2024-10-14 00:01:46,532 INFO L78 Accepts]: Start accepts. Automaton has 42093 states and 47041 transitions. Word has length 1095 [2024-10-14 00:01:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:46,533 INFO L471 AbstractCegarLoop]: Abstraction has 42093 states and 47041 transitions. [2024-10-14 00:01:46,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 42093 states and 47041 transitions. [2024-10-14 00:01:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2024-10-14 00:01:46,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:46,547 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:46,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 00:01:46,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 00:01:46,748 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:46,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:46,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1731910089, now seen corresponding path program 1 times [2024-10-14 00:01:46,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:46,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677524156] [2024-10-14 00:01:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2024-10-14 00:01:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677524156] [2024-10-14 00:01:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677524156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:47,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:01:47,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 00:01:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243505328] [2024-10-14 00:01:47,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:47,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:01:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:01:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:01:47,803 INFO L87 Difference]: Start difference. First operand 42093 states and 47041 transitions. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:51,560 INFO L93 Difference]: Finished difference Result 108337 states and 121184 transitions. [2024-10-14 00:01:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:01:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 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 1188 [2024-10-14 00:01:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:51,655 INFO L225 Difference]: With dead ends: 108337 [2024-10-14 00:01:51,655 INFO L226 Difference]: Without dead ends: 66245 [2024-10-14 00:01:51,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:01:51,694 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 1392 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 4861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:51,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 209 Invalid, 4861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-14 00:01:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66245 states. [2024-10-14 00:01:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66245 to 55893. [2024-10-14 00:01:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.1235418306734417) internal successors, (62797), 55892 states have internal predecessors, (62797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 62797 transitions. [2024-10-14 00:01:52,465 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 62797 transitions. Word has length 1188 [2024-10-14 00:01:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:52,466 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 62797 transitions. [2024-10-14 00:01:52,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 62797 transitions. [2024-10-14 00:01:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2024-10-14 00:01:52,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:52,480 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:52,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 00:01:52,480 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:52,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash 849952801, now seen corresponding path program 1 times [2024-10-14 00:01:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:52,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5263137] [2024-10-14 00:01:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1505 backedges. 502 proven. 896 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-14 00:01:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:01:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5263137] [2024-10-14 00:01:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5263137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:01:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124922390] [2024-10-14 00:01:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:55,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:01:55,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:01:55,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:01:55,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 00:01:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:01:55,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 00:01:55,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:01:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1505 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2024-10-14 00:01:56,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:01:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124922390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:01:56,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:01:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-14 00:01:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158756511] [2024-10-14 00:01:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:01:56,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:01:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:01:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:01:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:01:56,195 INFO L87 Difference]: Start difference. First operand 55893 states and 62797 transitions. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:01:58,305 INFO L93 Difference]: Finished difference Result 111785 states and 125593 transitions. [2024-10-14 00:01:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:01:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 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 1202 [2024-10-14 00:01:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:01:58,381 INFO L225 Difference]: With dead ends: 111785 [2024-10-14 00:01:58,381 INFO L226 Difference]: Without dead ends: 55893 [2024-10-14 00:01:58,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1211 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:01:58,413 INFO L432 NwaCegarLoop]: 1120 mSDtfsCounter, 598 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:01:58,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1126 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 00:01:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55893 states. [2024-10-14 00:01:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55893 to 55893. [2024-10-14 00:01:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.1089243541115008) internal successors, (61980), 55892 states have internal predecessors, (61980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 61980 transitions. [2024-10-14 00:01:58,953 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 61980 transitions. Word has length 1202 [2024-10-14 00:01:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:01:58,954 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 61980 transitions. [2024-10-14 00:01:58,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:01:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 61980 transitions. [2024-10-14 00:01:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2024-10-14 00:01:58,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:01:58,965 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:01:58,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 00:01:59,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 00:01:59,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:01:59,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:01:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -222414821, now seen corresponding path program 1 times [2024-10-14 00:01:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:01:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489896164] [2024-10-14 00:01:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:01:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:01:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:02:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 736 proven. 891 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-14 00:02:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:02:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489896164] [2024-10-14 00:02:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489896164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:02:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356792939] [2024-10-14 00:02:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:02:01,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:02:01,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:02:01,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:02:01,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 00:02:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:02:01,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:02:01,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:02:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2024-10-14 00:02:01,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:02:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356792939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:02:01,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:02:01,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-14 00:02:01,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064272128] [2024-10-14 00:02:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:02:01,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:02:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:02:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:02:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:02:01,494 INFO L87 Difference]: Start difference. First operand 55893 states and 61980 transitions. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:02:03,329 INFO L93 Difference]: Finished difference Result 111785 states and 123959 transitions. [2024-10-14 00:02:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:02:03,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 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 1258 [2024-10-14 00:02:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:02:03,389 INFO L225 Difference]: With dead ends: 111785 [2024-10-14 00:02:03,389 INFO L226 Difference]: Without dead ends: 55893 [2024-10-14 00:02:03,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:02:03,524 INFO L432 NwaCegarLoop]: 771 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-14 00:02:03,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 777 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-14 00:02:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55893 states. [2024-10-14 00:02:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55893 to 55893. [2024-10-14 00:02:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.095451943032992) internal successors, (61227), 55892 states have internal predecessors, (61227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 61227 transitions. [2024-10-14 00:02:03,948 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 61227 transitions. Word has length 1258 [2024-10-14 00:02:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:02:03,949 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 61227 transitions. [2024-10-14 00:02:03,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 61227 transitions. [2024-10-14 00:02:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2024-10-14 00:02:03,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:02:03,960 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:02:03,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 00:02:04,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:02:04,161 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:02:04,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:02:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1726507504, now seen corresponding path program 1 times [2024-10-14 00:02:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:02:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251826053] [2024-10-14 00:02:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:02:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms