./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/Problem11_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/Problem11_label25.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 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:59:48,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:59:48,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:59:48,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:59:48,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:59:48,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:59:48,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:59:48,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:59:48,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:59:48,127 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:59:48,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:59:48,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:59:48,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:59:48,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:59:48,128 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:59:48,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:59:48,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:59:48,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:59:48,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:59:48,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:59:48,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:59:48,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:59:48,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:59:48,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:59:48,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:59:48,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:59:48,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:59:48,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:59:48,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:59:48,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:59:48,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:59:48,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:59:48,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:59:48,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:59:48,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:59:48,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:59:48,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 [2024-10-12 15:59:48,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:59:48,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:59:48,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:59:48,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:59:48,350 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:59:48,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-10-12 15:59:49,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:59:49,783 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:59:49,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-10-12 15:59:49,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce96e8f6/dda77a715e1544bfb7832928079d7cc1/FLAGe4a179767 [2024-10-12 15:59:49,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce96e8f6/dda77a715e1544bfb7832928079d7cc1 [2024-10-12 15:59:49,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:59:49,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:59:49,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:59:49,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:59:49,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:59:49,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:59:49" (1/1) ... [2024-10-12 15:59:49,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f09424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:49, skipping insertion in model container [2024-10-12 15:59:49,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:59:49" (1/1) ... [2024-10-12 15:59:49,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:59:50,056 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/Problem11_label25.c[4556,4569] [2024-10-12 15:59:50,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:59:50,230 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:59:50,252 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/Problem11_label25.c[4556,4569] [2024-10-12 15:59:50,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:59:50,347 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:59:50,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50 WrapperNode [2024-10-12 15:59:50,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:59:50,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:59:50,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:59:50,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:59:50,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,444 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-12 15:59:50,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:59:50,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:59:50,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:59:50,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:59:50,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,506 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]. [2024-10-12 15:59:50,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:59:50,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:59:50,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:59:50,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:59:50,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (1/1) ... [2024-10-12 15:59:50,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:59:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:59:50,606 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) [2024-10-12 15:59:50,608 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 [2024-10-12 15:59:50,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:59:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:59:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:59:50,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:59:50,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:59:50,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:59:51,760 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-12 15:59:51,761 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:59:51,800 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:59:51,800 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:59:51,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:59:51 BoogieIcfgContainer [2024-10-12 15:59:51,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:59:51,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:59:51,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:59:51,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:59:51,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:59:49" (1/3) ... [2024-10-12 15:59:51,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44505ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:59:51, skipping insertion in model container [2024-10-12 15:59:51,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:59:50" (2/3) ... [2024-10-12 15:59:51,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44505ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:59:51, skipping insertion in model container [2024-10-12 15:59:51,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:59:51" (3/3) ... [2024-10-12 15:59:51,809 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2024-10-12 15:59:51,821 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:59:51,821 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:59:51,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:59:51,876 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;@6201239c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:59:51,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:59:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 15:59:51,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:51,885 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] [2024-10-12 15:59:51,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:51,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash 936061325, now seen corresponding path program 1 times [2024-10-12 15:59:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:51,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163545869] [2024-10-12 15:59:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163545869] [2024-10-12 15:59:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163545869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:59:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38137521] [2024-10-12 15:59:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:52,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:59:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:59:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:59:52,060 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:52,106 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-12 15:59:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:59:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-12 15:59:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:52,120 INFO L225 Difference]: With dead ends: 441 [2024-10-12 15:59:52,120 INFO L226 Difference]: Without dead ends: 219 [2024-10-12 15:59:52,123 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 [2024-10-12 15:59:52,126 INFO L432 NwaCegarLoop]: 355 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, 355 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 [2024-10-12 15:59:52,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:59:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-12 15:59:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-12 15:59:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 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) [2024-10-12 15:59:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-12 15:59:52,171 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 30 [2024-10-12 15:59:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:52,172 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-12 15:59:52,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-12 15:59:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 15:59:52,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:52,173 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] [2024-10-12 15:59:52,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:59:52,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:52,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1800183855, now seen corresponding path program 1 times [2024-10-12 15:59:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465586767] [2024-10-12 15:59:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:52,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:52,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465586767] [2024-10-12 15:59:52,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465586767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:52,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:59:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611819610] [2024-10-12 15:59:52,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:52,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:52,341 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:53,079 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2024-10-12 15:59:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:53,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-12 15:59:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:53,083 INFO L225 Difference]: With dead ends: 630 [2024-10-12 15:59:53,083 INFO L226 Difference]: Without dead ends: 412 [2024-10-12 15:59:53,084 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 [2024-10-12 15:59:53,084 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 193 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:53,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:59:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-12 15:59:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-10-12 15:59:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2024-10-12 15:59:53,106 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 30 [2024-10-12 15:59:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:53,106 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2024-10-12 15:59:53,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2024-10-12 15:59:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 15:59:53,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:53,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:53,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:59:53,109 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:53,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1476818538, now seen corresponding path program 1 times [2024-10-12 15:59:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:53,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174402221] [2024-10-12 15:59:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174402221] [2024-10-12 15:59:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174402221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:53,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:53,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:59:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202168221] [2024-10-12 15:59:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:53,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:53,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:53,270 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:53,861 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2024-10-12 15:59:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-10-12 15:59:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:53,864 INFO L225 Difference]: With dead ends: 1210 [2024-10-12 15:59:53,864 INFO L226 Difference]: Without dead ends: 799 [2024-10-12 15:59:53,865 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 [2024-10-12 15:59:53,866 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:53,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:59:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-12 15:59:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2024-10-12 15:59:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3761118170266835) internal successors, (1083), 787 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1083 transitions. [2024-10-12 15:59:53,892 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1083 transitions. Word has length 98 [2024-10-12 15:59:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:53,893 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1083 transitions. [2024-10-12 15:59:53,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1083 transitions. [2024-10-12 15:59:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-12 15:59:53,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:53,895 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:53,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:59:53,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:53,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash 741985082, now seen corresponding path program 1 times [2024-10-12 15:59:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156804572] [2024-10-12 15:59:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156804572] [2024-10-12 15:59:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156804572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:59:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009781386] [2024-10-12 15:59:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:54,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:54,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:54,151 INFO L87 Difference]: Start difference. First operand 788 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:54,753 INFO L93 Difference]: Finished difference Result 1944 states and 2613 transitions. [2024-10-12 15:59:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:54,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-10-12 15:59:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:54,757 INFO L225 Difference]: With dead ends: 1944 [2024-10-12 15:59:54,757 INFO L226 Difference]: Without dead ends: 1157 [2024-10-12 15:59:54,758 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 [2024-10-12 15:59:54,759 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:54,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:59:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-10-12 15:59:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-10-12 15:59:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.2718614718614718) internal successors, (1469), 1155 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1469 transitions. [2024-10-12 15:59:54,779 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1469 transitions. Word has length 99 [2024-10-12 15:59:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:54,781 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1469 transitions. [2024-10-12 15:59:54,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1469 transitions. [2024-10-12 15:59:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-12 15:59:54,787 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:54,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:59:54,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:54,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1510404607, now seen corresponding path program 1 times [2024-10-12 15:59:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420178642] [2024-10-12 15:59:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420178642] [2024-10-12 15:59:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420178642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:54,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:59:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272193304] [2024-10-12 15:59:54,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:54,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:59:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:59:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:59:54,968 INFO L87 Difference]: Start difference. First operand 1156 states and 1469 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:55,938 INFO L93 Difference]: Finished difference Result 3444 states and 4567 transitions. [2024-10-12 15:59:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:59:55,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2024-10-12 15:59:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:55,945 INFO L225 Difference]: With dead ends: 3444 [2024-10-12 15:59:55,945 INFO L226 Difference]: Without dead ends: 2473 [2024-10-12 15:59:55,946 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 [2024-10-12 15:59:55,947 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 363 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:55,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 84 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:59:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-12 15:59:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2472. [2024-10-12 15:59:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 1.2877377579927154) internal successors, (3182), 2471 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3182 transitions. [2024-10-12 15:59:55,982 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3182 transitions. Word has length 157 [2024-10-12 15:59:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:55,983 INFO L471 AbstractCegarLoop]: Abstraction has 2472 states and 3182 transitions. [2024-10-12 15:59:55,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3182 transitions. [2024-10-12 15:59:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-12 15:59:55,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:55,989 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:59:55,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:59:55,990 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:55,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1351486791, now seen corresponding path program 1 times [2024-10-12 15:59:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328752729] [2024-10-12 15:59:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:56,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328752729] [2024-10-12 15:59:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328752729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:59:56,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127441365] [2024-10-12 15:59:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:56,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:56,206 INFO L87 Difference]: Start difference. First operand 2472 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:56,796 INFO L93 Difference]: Finished difference Result 5694 states and 7519 transitions. [2024-10-12 15:59:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-10-12 15:59:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:56,806 INFO L225 Difference]: With dead ends: 5694 [2024-10-12 15:59:56,806 INFO L226 Difference]: Without dead ends: 3591 [2024-10-12 15:59:56,809 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 [2024-10-12 15:59:56,812 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:56,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 344 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:59:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2024-10-12 15:59:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3578. [2024-10-12 15:59:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 1.2524461839530332) internal successors, (4480), 3577 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4480 transitions. [2024-10-12 15:59:56,882 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4480 transitions. Word has length 210 [2024-10-12 15:59:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:56,883 INFO L471 AbstractCegarLoop]: Abstraction has 3578 states and 4480 transitions. [2024-10-12 15:59:56,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4480 transitions. [2024-10-12 15:59:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-12 15:59:56,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:56,886 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:56,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:59:56,886 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:56,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 332301943, now seen corresponding path program 1 times [2024-10-12 15:59:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:56,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993299341] [2024-10-12 15:59:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 15:59:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993299341] [2024-10-12 15:59:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993299341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:59:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015736432] [2024-10-12 15:59:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:57,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:57,054 INFO L87 Difference]: Start difference. First operand 3578 states and 4480 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:57,605 INFO L93 Difference]: Finished difference Result 7725 states and 9780 transitions. [2024-10-12 15:59:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 211 [2024-10-12 15:59:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:57,615 INFO L225 Difference]: With dead ends: 7725 [2024-10-12 15:59:57,615 INFO L226 Difference]: Without dead ends: 4516 [2024-10-12 15:59:57,618 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 [2024-10-12 15:59:57,618 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 171 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:57,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 343 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:59:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2024-10-12 15:59:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 4498. [2024-10-12 15:59:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 1.2408272181454303) internal successors, (5580), 4497 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 5580 transitions. [2024-10-12 15:59:57,677 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 5580 transitions. Word has length 211 [2024-10-12 15:59:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:57,678 INFO L471 AbstractCegarLoop]: Abstraction has 4498 states and 5580 transitions. [2024-10-12 15:59:57,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 5580 transitions. [2024-10-12 15:59:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-12 15:59:57,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:57,680 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:59:57,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:59:57,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:57,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1550822466, now seen corresponding path program 1 times [2024-10-12 15:59:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953022804] [2024-10-12 15:59:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:57,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 15:59:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953022804] [2024-10-12 15:59:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953022804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:59:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907725817] [2024-10-12 15:59:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:57,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:59:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:59:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:59:57,854 INFO L87 Difference]: Start difference. First operand 4498 states and 5580 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:58,454 INFO L93 Difference]: Finished difference Result 9740 states and 12304 transitions. [2024-10-12 15:59:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:59:58,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 212 [2024-10-12 15:59:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:58,467 INFO L225 Difference]: With dead ends: 9740 [2024-10-12 15:59:58,467 INFO L226 Difference]: Without dead ends: 5611 [2024-10-12 15:59:58,471 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 [2024-10-12 15:59:58,472 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:58,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 368 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:59:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2024-10-12 15:59:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5418. [2024-10-12 15:59:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.2331548827764445) internal successors, (6680), 5417 states have internal predecessors, (6680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 6680 transitions. [2024-10-12 15:59:58,529 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 6680 transitions. Word has length 212 [2024-10-12 15:59:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:58,530 INFO L471 AbstractCegarLoop]: Abstraction has 5418 states and 6680 transitions. [2024-10-12 15:59:58,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 6680 transitions. [2024-10-12 15:59:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-12 15:59:58,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:58,532 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:58,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:59:58,532 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:58,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -533407248, now seen corresponding path program 1 times [2024-10-12 15:59:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618737965] [2024-10-12 15:59:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:59:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:59:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:59:58,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618737965] [2024-10-12 15:59:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618737965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:59:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:59:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 15:59:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114932220] [2024-10-12 15:59:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:59:58,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:59:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:59:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:59:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:59:58,820 INFO L87 Difference]: Start difference. First operand 5418 states and 6680 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:59:59,808 INFO L93 Difference]: Finished difference Result 16398 states and 20712 transitions. [2024-10-12 15:59:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:59:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 [2024-10-12 15:59:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:59:59,831 INFO L225 Difference]: With dead ends: 16398 [2024-10-12 15:59:59,831 INFO L226 Difference]: Without dead ends: 11349 [2024-10-12 15:59:59,834 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 [2024-10-12 15:59:59,834 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 302 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:59:59,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 205 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:59:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2024-10-12 15:59:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 11343. [2024-10-12 15:59:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11343 states, 11342 states have (on average 1.206048315993652) internal successors, (13679), 11342 states have internal predecessors, (13679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13679 transitions. [2024-10-12 15:59:59,949 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13679 transitions. Word has length 232 [2024-10-12 15:59:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:59:59,949 INFO L471 AbstractCegarLoop]: Abstraction has 11343 states and 13679 transitions. [2024-10-12 15:59:59,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:59:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13679 transitions. [2024-10-12 15:59:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-12 15:59:59,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:59:59,952 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:59:59,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:59:59,952 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:59:59,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:59:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash -851626696, now seen corresponding path program 1 times [2024-10-12 15:59:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:59:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989441334] [2024-10-12 15:59:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:59:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:59:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 16:00:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989441334] [2024-10-12 16:00:00,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989441334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:00,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:00,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:00:00,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499562704] [2024-10-12 16:00:00,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:00,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:00,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:00,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:00,043 INFO L87 Difference]: Start difference. First operand 11343 states and 13679 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:00,716 INFO L93 Difference]: Finished difference Result 25074 states and 30488 transitions. [2024-10-12 16:00:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-10-12 16:00:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:00,736 INFO L225 Difference]: With dead ends: 25074 [2024-10-12 16:00:00,737 INFO L226 Difference]: Without dead ends: 14100 [2024-10-12 16:00:00,746 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 [2024-10-12 16:00:00,746 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:00,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 151 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:00:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14100 states. [2024-10-12 16:00:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14100 to 13546. [2024-10-12 16:00:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13545 states have (on average 1.1601328903654484) internal successors, (15714), 13545 states have internal predecessors, (15714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 15714 transitions. [2024-10-12 16:00:00,874 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 15714 transitions. Word has length 233 [2024-10-12 16:00:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:00,874 INFO L471 AbstractCegarLoop]: Abstraction has 13546 states and 15714 transitions. [2024-10-12 16:00:00,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 15714 transitions. [2024-10-12 16:00:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-10-12 16:00:00,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:00,878 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:00:00,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:00:00,878 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:00,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1626578551, now seen corresponding path program 1 times [2024-10-12 16:00:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812676094] [2024-10-12 16:00:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812676094] [2024-10-12 16:00:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812676094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:00:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244354996] [2024-10-12 16:00:01,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:01,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:01,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:00:01,170 INFO L87 Difference]: Start difference. First operand 13546 states and 15714 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:02,187 INFO L93 Difference]: Finished difference Result 32622 states and 38077 transitions. [2024-10-12 16:00:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:02,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2024-10-12 16:00:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:02,212 INFO L225 Difference]: With dead ends: 32622 [2024-10-12 16:00:02,213 INFO L226 Difference]: Without dead ends: 19445 [2024-10-12 16:00:02,222 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 [2024-10-12 16:00:02,223 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 319 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:02,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 104 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:00:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19445 states. [2024-10-12 16:00:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19445 to 17961. [2024-10-12 16:00:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17961 states, 17960 states have (on average 1.158129175946548) internal successors, (20800), 17960 states have internal predecessors, (20800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17961 states to 17961 states and 20800 transitions. [2024-10-12 16:00:02,401 INFO L78 Accepts]: Start accepts. Automaton has 17961 states and 20800 transitions. Word has length 242 [2024-10-12 16:00:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:02,402 INFO L471 AbstractCegarLoop]: Abstraction has 17961 states and 20800 transitions. [2024-10-12 16:00:02,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17961 states and 20800 transitions. [2024-10-12 16:00:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-12 16:00:02,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:02,405 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:02,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:00:02,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:02,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash -534193244, now seen corresponding path program 1 times [2024-10-12 16:00:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032464902] [2024-10-12 16:00:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-12 16:00:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032464902] [2024-10-12 16:00:02,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032464902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:02,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:02,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566591420] [2024-10-12 16:00:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:02,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:02,604 INFO L87 Difference]: Start difference. First operand 17961 states and 20800 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:03,172 INFO L93 Difference]: Finished difference Result 35184 states and 40784 transitions. [2024-10-12 16:00:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:03,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 249 [2024-10-12 16:00:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:03,194 INFO L225 Difference]: With dead ends: 35184 [2024-10-12 16:00:03,194 INFO L226 Difference]: Without dead ends: 17408 [2024-10-12 16:00:03,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:03,209 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 170 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:03,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 375 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:00:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17408 states. [2024-10-12 16:00:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17408 to 17216. [2024-10-12 16:00:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1367993029334882) internal successors, (19570), 17215 states have internal predecessors, (19570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19570 transitions. [2024-10-12 16:00:03,464 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19570 transitions. Word has length 249 [2024-10-12 16:00:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:03,465 INFO L471 AbstractCegarLoop]: Abstraction has 17216 states and 19570 transitions. [2024-10-12 16:00:03,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:03,465 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19570 transitions. [2024-10-12 16:00:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-12 16:00:03,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:03,470 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:00:03,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:00:03,471 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:03,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1630613573, now seen corresponding path program 1 times [2024-10-12 16:00:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376283286] [2024-10-12 16:00:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 113 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376283286] [2024-10-12 16:00:03,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376283286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976669026] [2024-10-12 16:00:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:03,921 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) [2024-10-12 16:00:03,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:00:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:04,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:00:04,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:04,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:00:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976669026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:04,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:00:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:00:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198640994] [2024-10-12 16:00:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:04,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:00:04,425 INFO L87 Difference]: Start difference. First operand 17216 states and 19570 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:05,151 INFO L93 Difference]: Finished difference Result 32041 states and 36492 transitions. [2024-10-12 16:00:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-10-12 16:00:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:05,169 INFO L225 Difference]: With dead ends: 32041 [2024-10-12 16:00:05,169 INFO L226 Difference]: Without dead ends: 17222 [2024-10-12 16:00:05,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:00:05,179 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 172 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:05,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 176 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:00:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17222 states. [2024-10-12 16:00:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17222 to 17216. [2024-10-12 16:00:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1354051699099623) internal successors, (19546), 17215 states have internal predecessors, (19546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19546 transitions. [2024-10-12 16:00:05,309 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19546 transitions. Word has length 263 [2024-10-12 16:00:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:05,310 INFO L471 AbstractCegarLoop]: Abstraction has 17216 states and 19546 transitions. [2024-10-12 16:00:05,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19546 transitions. [2024-10-12 16:00:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-10-12 16:00:05,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:05,315 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:05,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:00:05,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 16:00:05,516 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:05,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash 827517491, now seen corresponding path program 1 times [2024-10-12 16:00:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854209596] [2024-10-12 16:00:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-12 16:00:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854209596] [2024-10-12 16:00:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854209596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076734554] [2024-10-12 16:00:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:05,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:05,688 INFO L87 Difference]: Start difference. First operand 17216 states and 19546 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:06,170 INFO L93 Difference]: Finished difference Result 35898 states and 40778 transitions. [2024-10-12 16:00:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 297 [2024-10-12 16:00:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:06,194 INFO L225 Difference]: With dead ends: 35898 [2024-10-12 16:00:06,194 INFO L226 Difference]: Without dead ends: 21079 [2024-10-12 16:00:06,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:06,205 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 190 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:06,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 149 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2024-10-12 16:00:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 18135. [2024-10-12 16:00:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18135 states, 18134 states have (on average 1.1355464872614978) internal successors, (20592), 18134 states have internal predecessors, (20592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18135 states to 18135 states and 20592 transitions. [2024-10-12 16:00:06,450 INFO L78 Accepts]: Start accepts. Automaton has 18135 states and 20592 transitions. Word has length 297 [2024-10-12 16:00:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:06,458 INFO L471 AbstractCegarLoop]: Abstraction has 18135 states and 20592 transitions. [2024-10-12 16:00:06,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18135 states and 20592 transitions. [2024-10-12 16:00:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-12 16:00:06,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:06,469 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:06,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:00:06,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:06,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1244535125, now seen corresponding path program 1 times [2024-10-12 16:00:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:06,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201997776] [2024-10-12 16:00:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 16:00:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201997776] [2024-10-12 16:00:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201997776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:06,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:00:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536300878] [2024-10-12 16:00:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:06,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:06,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:06,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:00:06,909 INFO L87 Difference]: Start difference. First operand 18135 states and 20592 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:07,985 INFO L93 Difference]: Finished difference Result 41456 states and 47288 transitions. [2024-10-12 16:00:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2024-10-12 16:00:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:08,008 INFO L225 Difference]: With dead ends: 41456 [2024-10-12 16:00:08,009 INFO L226 Difference]: Without dead ends: 24977 [2024-10-12 16:00:08,018 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 [2024-10-12 16:00:08,019 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 313 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:08,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 420 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:00:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24977 states. [2024-10-12 16:00:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24977 to 20163. [2024-10-12 16:00:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2024-10-12 16:00:08,189 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 301 [2024-10-12 16:00:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:08,190 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2024-10-12 16:00:08,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2024-10-12 16:00:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-12 16:00:08,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:08,195 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:00:08,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:00:08,195 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:08,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash 347530265, now seen corresponding path program 1 times [2024-10-12 16:00:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:08,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624464791] [2024-10-12 16:00:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 56 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:08,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624464791] [2024-10-12 16:00:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624464791] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:08,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994919896] [2024-10-12 16:00:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:08,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:08,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:08,595 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) [2024-10-12 16:00:08,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:00:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:08,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:00:08,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-12 16:00:08,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:00:08,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994919896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:08,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:00:08,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:00:08,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552933362] [2024-10-12 16:00:08,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:08,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:00:08,738 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:09,174 INFO L93 Difference]: Finished difference Result 20349 states and 22869 transitions. [2024-10-12 16:00:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-10-12 16:00:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:09,193 INFO L225 Difference]: With dead ends: 20349 [2024-10-12 16:00:09,194 INFO L226 Difference]: Without dead ends: 20347 [2024-10-12 16:00:09,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:00:09,199 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 156 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:09,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 379 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2024-10-12 16:00:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 20163. [2024-10-12 16:00:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2024-10-12 16:00:09,453 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 310 [2024-10-12 16:00:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:09,453 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2024-10-12 16:00:09,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2024-10-12 16:00:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-12 16:00:09,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:09,460 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:09,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 16:00:09,660 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,SelfDestructingSolverStorable15 [2024-10-12 16:00:09,661 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:09,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash -708126595, now seen corresponding path program 1 times [2024-10-12 16:00:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342462210] [2024-10-12 16:00:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 16:00:09,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:09,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342462210] [2024-10-12 16:00:09,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342462210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:09,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:09,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:00:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416446561] [2024-10-12 16:00:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:09,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:09,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:00:09,990 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:11,068 INFO L93 Difference]: Finished difference Result 46980 states and 52837 transitions. [2024-10-12 16:00:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:11,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-10-12 16:00:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:11,093 INFO L225 Difference]: With dead ends: 46980 [2024-10-12 16:00:11,093 INFO L226 Difference]: Without dead ends: 29214 [2024-10-12 16:00:11,099 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 [2024-10-12 16:00:11,100 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 330 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:11,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 76 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:00:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2024-10-12 16:00:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 26992. [2024-10-12 16:00:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26992 states, 26991 states have (on average 1.1211885443295913) internal successors, (30262), 26991 states have internal predecessors, (30262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26992 states to 26992 states and 30262 transitions. [2024-10-12 16:00:11,326 INFO L78 Accepts]: Start accepts. Automaton has 26992 states and 30262 transitions. Word has length 317 [2024-10-12 16:00:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:11,327 INFO L471 AbstractCegarLoop]: Abstraction has 26992 states and 30262 transitions. [2024-10-12 16:00:11,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 26992 states and 30262 transitions. [2024-10-12 16:00:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-12 16:00:11,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:11,332 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:00:11,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:00:11,332 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:11,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2061924770, now seen corresponding path program 1 times [2024-10-12 16:00:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792254583] [2024-10-12 16:00:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:11,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792254583] [2024-10-12 16:00:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792254583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719838302] [2024-10-12 16:00:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:11,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:11,572 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) [2024-10-12 16:00:11,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:00:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:11,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:00:11,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:11,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:00:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:00:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719838302] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:00:13,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:00:13,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-12 16:00:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678518441] [2024-10-12 16:00:13,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:00:13,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 16:00:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:13,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 16:00:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:00:13,155 INFO L87 Difference]: Start difference. First operand 26992 states and 30262 transitions. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:15,530 INFO L93 Difference]: Finished difference Result 72083 states and 80691 transitions. [2024-10-12 16:00:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 16:00:15,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 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 328 [2024-10-12 16:00:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:15,576 INFO L225 Difference]: With dead ends: 72083 [2024-10-12 16:00:15,576 INFO L226 Difference]: Without dead ends: 48040 [2024-10-12 16:00:15,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:00:15,598 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1066 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:15,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 228 Invalid, 4437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:00:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48040 states. [2024-10-12 16:00:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48040 to 43059. [2024-10-12 16:00:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43059 states, 43058 states have (on average 1.1203725207859168) internal successors, (48241), 43058 states have internal predecessors, (48241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43059 states to 43059 states and 48241 transitions. [2024-10-12 16:00:16,049 INFO L78 Accepts]: Start accepts. Automaton has 43059 states and 48241 transitions. Word has length 328 [2024-10-12 16:00:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:16,049 INFO L471 AbstractCegarLoop]: Abstraction has 43059 states and 48241 transitions. [2024-10-12 16:00:16,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43059 states and 48241 transitions. [2024-10-12 16:00:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-10-12 16:00:16,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:16,058 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:16,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 16:00:16,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 16:00:16,258 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:16,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1955931774, now seen corresponding path program 1 times [2024-10-12 16:00:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:16,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253567363] [2024-10-12 16:00:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:16,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-12 16:00:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253567363] [2024-10-12 16:00:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253567363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:00:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044771489] [2024-10-12 16:00:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:16,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:00:16,552 INFO L87 Difference]: Start difference. First operand 43059 states and 48241 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:17,583 INFO L93 Difference]: Finished difference Result 89076 states and 99655 transitions. [2024-10-12 16:00:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-10-12 16:00:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:17,630 INFO L225 Difference]: With dead ends: 89076 [2024-10-12 16:00:17,631 INFO L226 Difference]: Without dead ends: 49152 [2024-10-12 16:00:17,649 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 [2024-10-12 16:00:17,650 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 327 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:17,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 57 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:00:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2024-10-12 16:00:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 44710. [2024-10-12 16:00:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 1.118678565836856) internal successors, (50015), 44709 states have internal predecessors, (50015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 50015 transitions. [2024-10-12 16:00:18,265 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 50015 transitions. Word has length 352 [2024-10-12 16:00:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:18,266 INFO L471 AbstractCegarLoop]: Abstraction has 44710 states and 50015 transitions. [2024-10-12 16:00:18,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 50015 transitions. [2024-10-12 16:00:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-12 16:00:18,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:18,281 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:18,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:00:18,281 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:18,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1787910449, now seen corresponding path program 1 times [2024-10-12 16:00:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314220317] [2024-10-12 16:00:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-12 16:00:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314220317] [2024-10-12 16:00:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314220317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240532717] [2024-10-12 16:00:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:18,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:18,545 INFO L87 Difference]: Start difference. First operand 44710 states and 50015 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:19,180 INFO L93 Difference]: Finished difference Result 93467 states and 104621 transitions. [2024-10-12 16:00:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 388 [2024-10-12 16:00:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:19,232 INFO L225 Difference]: With dead ends: 93467 [2024-10-12 16:00:19,233 INFO L226 Difference]: Without dead ends: 49126 [2024-10-12 16:00:19,265 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 [2024-10-12 16:00:19,265 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 63 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:19,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 366 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49126 states. [2024-10-12 16:00:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49126 to 46366. [2024-10-12 16:00:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46366 states, 46365 states have (on average 1.1162514827995256) internal successors, (51755), 46365 states have internal predecessors, (51755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46366 states to 46366 states and 51755 transitions. [2024-10-12 16:00:19,943 INFO L78 Accepts]: Start accepts. Automaton has 46366 states and 51755 transitions. Word has length 388 [2024-10-12 16:00:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:19,943 INFO L471 AbstractCegarLoop]: Abstraction has 46366 states and 51755 transitions. [2024-10-12 16:00:19,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 46366 states and 51755 transitions. [2024-10-12 16:00:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-10-12 16:00:19,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:19,957 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-12 16:00:19,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 16:00:19,957 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:19,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 36311470, now seen corresponding path program 1 times [2024-10-12 16:00:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750669791] [2024-10-12 16:00:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-10-12 16:00:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750669791] [2024-10-12 16:00:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750669791] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681551232] [2024-10-12 16:00:20,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:20,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:20,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:20,079 INFO L87 Difference]: Start difference. First operand 46366 states and 51755 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:20,653 INFO L93 Difference]: Finished difference Result 88676 states and 98871 transitions. [2024-10-12 16:00:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:20,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 403 [2024-10-12 16:00:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:20,696 INFO L225 Difference]: With dead ends: 88676 [2024-10-12 16:00:20,696 INFO L226 Difference]: Without dead ends: 45813 [2024-10-12 16:00:20,722 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 [2024-10-12 16:00:20,723 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:20,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 354 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45813 states. [2024-10-12 16:00:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45813 to 27351. [2024-10-12 16:00:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 27350 states have (on average 1.1157221206581354) internal successors, (30515), 27350 states have internal predecessors, (30515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 30515 transitions. [2024-10-12 16:00:21,188 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 30515 transitions. Word has length 403 [2024-10-12 16:00:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:21,188 INFO L471 AbstractCegarLoop]: Abstraction has 27351 states and 30515 transitions. [2024-10-12 16:00:21,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 30515 transitions. [2024-10-12 16:00:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-10-12 16:00:21,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:21,198 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:21,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:00:21,198 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:21,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 436109443, now seen corresponding path program 1 times [2024-10-12 16:00:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524858199] [2024-10-12 16:00:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-10-12 16:00:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524858199] [2024-10-12 16:00:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524858199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222082910] [2024-10-12 16:00:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:21,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:21,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:21,745 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) [2024-10-12 16:00:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:00:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:21,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:00:21,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-10-12 16:00:21,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:00:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222082910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:21,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:00:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:00:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441533679] [2024-10-12 16:00:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:21,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:00:21,934 INFO L87 Difference]: Start difference. First operand 27351 states and 30515 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:22,519 INFO L93 Difference]: Finished difference Result 55986 states and 62402 transitions. [2024-10-12 16:00:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 425 [2024-10-12 16:00:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:22,546 INFO L225 Difference]: With dead ends: 55986 [2024-10-12 16:00:22,546 INFO L226 Difference]: Without dead ends: 29004 [2024-10-12 16:00:22,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:00:22,563 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 174 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:22,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 136 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29004 states. [2024-10-12 16:00:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29004 to 26422. [2024-10-12 16:00:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26422 states, 26421 states have (on average 1.1115400628288103) internal successors, (29368), 26421 states have internal predecessors, (29368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26422 states to 26422 states and 29368 transitions. [2024-10-12 16:00:22,838 INFO L78 Accepts]: Start accepts. Automaton has 26422 states and 29368 transitions. Word has length 425 [2024-10-12 16:00:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:22,838 INFO L471 AbstractCegarLoop]: Abstraction has 26422 states and 29368 transitions. [2024-10-12 16:00:22,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 26422 states and 29368 transitions. [2024-10-12 16:00:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-10-12 16:00:22,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:22,851 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:22,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 16:00:23,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:23,052 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:23,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1819270042, now seen corresponding path program 1 times [2024-10-12 16:00:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103386381] [2024-10-12 16:00:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 16:00:23,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103386381] [2024-10-12 16:00:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103386381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:23,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:23,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:23,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108674948] [2024-10-12 16:00:23,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:23,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:23,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:23,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:00:23,484 INFO L87 Difference]: Start difference. First operand 26422 states and 29368 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:24,417 INFO L93 Difference]: Finished difference Result 60957 states and 67824 transitions. [2024-10-12 16:00:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:24,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 516 [2024-10-12 16:00:24,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:24,441 INFO L225 Difference]: With dead ends: 60957 [2024-10-12 16:00:24,441 INFO L226 Difference]: Without dead ends: 34904 [2024-10-12 16:00:24,448 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 [2024-10-12 16:00:24,448 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 121 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:24,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 99 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:00:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34904 states. [2024-10-12 16:00:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34904 to 31219. [2024-10-12 16:00:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31219 states, 31218 states have (on average 1.106637196489205) internal successors, (34547), 31218 states have internal predecessors, (34547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31219 states to 31219 states and 34547 transitions. [2024-10-12 16:00:24,692 INFO L78 Accepts]: Start accepts. Automaton has 31219 states and 34547 transitions. Word has length 516 [2024-10-12 16:00:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:24,692 INFO L471 AbstractCegarLoop]: Abstraction has 31219 states and 34547 transitions. [2024-10-12 16:00:24,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31219 states and 34547 transitions. [2024-10-12 16:00:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-10-12 16:00:24,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:24,708 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:24,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:00:24,708 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:24,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1070980472, now seen corresponding path program 1 times [2024-10-12 16:00:24,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:24,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513433107] [2024-10-12 16:00:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:24,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-12 16:00:25,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:25,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513433107] [2024-10-12 16:00:25,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513433107] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:25,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534349689] [2024-10-12 16:00:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:25,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:25,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:25,298 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) [2024-10-12 16:00:25,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 16:00:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:25,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 16:00:25,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-12 16:00:25,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:00:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-12 16:00:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534349689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:00:30,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:00:30,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2024-10-12 16:00:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077864265] [2024-10-12 16:00:30,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:00:30,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 16:00:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 16:00:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-12 16:00:30,298 INFO L87 Difference]: Start difference. First operand 31219 states and 34547 transitions. Second operand has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:33,809 INFO L93 Difference]: Finished difference Result 100592 states and 111211 transitions. [2024-10-12 16:00:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 16:00:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 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 554 [2024-10-12 16:00:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:33,881 INFO L225 Difference]: With dead ends: 100592 [2024-10-12 16:00:33,881 INFO L226 Difference]: Without dead ends: 72690 [2024-10-12 16:00:33,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-10-12 16:00:33,911 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1610 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4332 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 4332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:33,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 228 Invalid, 5418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 4332 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 16:00:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72690 states. [2024-10-12 16:00:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72690 to 44478. [2024-10-12 16:00:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44478 states, 44477 states have (on average 1.1063471007487016) internal successors, (49207), 44477 states have internal predecessors, (49207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44478 states to 44478 states and 49207 transitions. [2024-10-12 16:00:34,438 INFO L78 Accepts]: Start accepts. Automaton has 44478 states and 49207 transitions. Word has length 554 [2024-10-12 16:00:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:34,439 INFO L471 AbstractCegarLoop]: Abstraction has 44478 states and 49207 transitions. [2024-10-12 16:00:34,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44478 states and 49207 transitions. [2024-10-12 16:00:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2024-10-12 16:00:34,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:34,466 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:34,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 16:00:34,666 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,SelfDestructingSolverStorable23 [2024-10-12 16:00:34,667 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:34,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1483537339, now seen corresponding path program 1 times [2024-10-12 16:00:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:34,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229486800] [2024-10-12 16:00:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-10-12 16:00:35,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:35,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229486800] [2024-10-12 16:00:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229486800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:35,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970046028] [2024-10-12 16:00:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:35,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:35,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:35,214 INFO L87 Difference]: Start difference. First operand 44478 states and 49207 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:35,764 INFO L93 Difference]: Finished difference Result 88256 states and 97581 transitions. [2024-10-12 16:00:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 823 [2024-10-12 16:00:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:35,805 INFO L225 Difference]: With dead ends: 88256 [2024-10-12 16:00:35,805 INFO L226 Difference]: Without dead ends: 45807 [2024-10-12 16:00:35,831 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 [2024-10-12 16:00:35,831 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 100 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:35,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 148 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45807 states. [2024-10-12 16:00:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45807 to 42268. [2024-10-12 16:00:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42268 states, 42267 states have (on average 1.097735822272695) internal successors, (46398), 42267 states have internal predecessors, (46398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42268 states to 42268 states and 46398 transitions. [2024-10-12 16:00:36,205 INFO L78 Accepts]: Start accepts. Automaton has 42268 states and 46398 transitions. Word has length 823 [2024-10-12 16:00:36,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:36,205 INFO L471 AbstractCegarLoop]: Abstraction has 42268 states and 46398 transitions. [2024-10-12 16:00:36,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:36,206 INFO L276 IsEmpty]: Start isEmpty. Operand 42268 states and 46398 transitions. [2024-10-12 16:00:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-10-12 16:00:36,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:36,229 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:36,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 16:00:36,230 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:36,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1884466130, now seen corresponding path program 1 times [2024-10-12 16:00:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:36,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394800631] [2024-10-12 16:00:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:36,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2024-10-12 16:00:36,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394800631] [2024-10-12 16:00:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394800631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:36,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708362660] [2024-10-12 16:00:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:36,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:36,753 INFO L87 Difference]: Start difference. First operand 42268 states and 46398 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:37,336 INFO L93 Difference]: Finished difference Result 79191 states and 86910 transitions. [2024-10-12 16:00:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 856 [2024-10-12 16:00:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:37,369 INFO L225 Difference]: With dead ends: 79191 [2024-10-12 16:00:37,369 INFO L226 Difference]: Without dead ends: 37292 [2024-10-12 16:00:37,392 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 [2024-10-12 16:00:37,392 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 75 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:37,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 339 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37292 states. [2024-10-12 16:00:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37292 to 35445. [2024-10-12 16:00:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 35444 states have (on average 1.088223676785916) internal successors, (38571), 35444 states have internal predecessors, (38571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 38571 transitions. [2024-10-12 16:00:37,711 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 38571 transitions. Word has length 856 [2024-10-12 16:00:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:37,711 INFO L471 AbstractCegarLoop]: Abstraction has 35445 states and 38571 transitions. [2024-10-12 16:00:37,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 38571 transitions. [2024-10-12 16:00:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-10-12 16:00:37,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:37,737 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:00:37,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 16:00:37,737 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:37,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 895363327, now seen corresponding path program 1 times [2024-10-12 16:00:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334969828] [2024-10-12 16:00:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:37,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1561 proven. 511 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-12 16:00:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:38,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334969828] [2024-10-12 16:00:38,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334969828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115985130] [2024-10-12 16:00:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:38,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:38,989 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) [2024-10-12 16:00:38,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 16:00:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:39,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:00:39,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2024-10-12 16:00:39,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:00:39,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115985130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:39,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:00:39,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-12 16:00:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721340746] [2024-10-12 16:00:39,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:39,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:00:39,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:39,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:00:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:00:39,370 INFO L87 Difference]: Start difference. First operand 35445 states and 38571 transitions. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:40,296 INFO L93 Difference]: Finished difference Result 76791 states and 83722 transitions. [2024-10-12 16:00:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 882 [2024-10-12 16:00:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:40,333 INFO L225 Difference]: With dead ends: 76791 [2024-10-12 16:00:40,333 INFO L226 Difference]: Without dead ends: 41715 [2024-10-12 16:00:40,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:00:40,355 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:40,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 97 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:00:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41715 states. [2024-10-12 16:00:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41715 to 38581. [2024-10-12 16:00:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38581 states, 38580 states have (on average 1.0829445308449974) internal successors, (41780), 38580 states have internal predecessors, (41780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38581 states to 38581 states and 41780 transitions. [2024-10-12 16:00:40,683 INFO L78 Accepts]: Start accepts. Automaton has 38581 states and 41780 transitions. Word has length 882 [2024-10-12 16:00:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:40,683 INFO L471 AbstractCegarLoop]: Abstraction has 38581 states and 41780 transitions. [2024-10-12 16:00:40,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 38581 states and 41780 transitions. [2024-10-12 16:00:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2024-10-12 16:00:40,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:40,709 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:40,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 16:00:40,909 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,SelfDestructingSolverStorable26 [2024-10-12 16:00:40,910 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:40,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2001046967, now seen corresponding path program 1 times [2024-10-12 16:00:40,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:40,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926133042] [2024-10-12 16:00:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1987 proven. 508 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-10-12 16:00:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926133042] [2024-10-12 16:00:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926133042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158084211] [2024-10-12 16:00:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:42,643 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) [2024-10-12 16:00:42,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 16:00:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:42,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:00:42,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1924 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-10-12 16:00:43,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:00:43,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158084211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:43,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:00:43,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-12 16:00:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912759363] [2024-10-12 16:00:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:43,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:43,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:43,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:00:43,038 INFO L87 Difference]: Start difference. First operand 38581 states and 41780 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:43,857 INFO L93 Difference]: Finished difference Result 85630 states and 92716 transitions. [2024-10-12 16:00:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:43,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 959 [2024-10-12 16:00:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:43,902 INFO L225 Difference]: With dead ends: 85630 [2024-10-12 16:00:43,902 INFO L226 Difference]: Without dead ends: 47418 [2024-10-12 16:00:43,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:00:43,912 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:43,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 321 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 16:00:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47418 states. [2024-10-12 16:00:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47418 to 38766. [2024-10-12 16:00:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38765 states have (on average 1.0812588675351478) internal successors, (41915), 38765 states have internal predecessors, (41915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 41915 transitions. [2024-10-12 16:00:44,263 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 41915 transitions. Word has length 959 [2024-10-12 16:00:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:44,264 INFO L471 AbstractCegarLoop]: Abstraction has 38766 states and 41915 transitions. [2024-10-12 16:00:44,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 41915 transitions. [2024-10-12 16:00:44,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-10-12 16:00:44,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:44,289 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:44,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 16:00:44,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:44,490 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:44,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1191840472, now seen corresponding path program 1 times [2024-10-12 16:00:44,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:44,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649581349] [2024-10-12 16:00:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:44,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1755 proven. 184 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-10-12 16:00:45,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649581349] [2024-10-12 16:00:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649581349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101232896] [2024-10-12 16:00:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:45,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:45,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:45,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:00:45,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 16:00:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:45,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:00:45,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1627 proven. 434 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-10-12 16:00:46,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:00:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 2061 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-10-12 16:00:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101232896] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:46,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:00:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 13 [2024-10-12 16:00:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309465290] [2024-10-12 16:00:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:46,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:00:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:00:46,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-12 16:00:46,779 INFO L87 Difference]: Start difference. First operand 38766 states and 41915 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:47,846 INFO L93 Difference]: Finished difference Result 89323 states and 96633 transitions. [2024-10-12 16:00:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:00:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 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 965 [2024-10-12 16:00:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:47,900 INFO L225 Difference]: With dead ends: 89323 [2024-10-12 16:00:47,900 INFO L226 Difference]: Without dead ends: 52766 [2024-10-12 16:00:47,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-12 16:00:47,928 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 240 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:47,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 64 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:00:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52766 states. [2024-10-12 16:00:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52766 to 51662. [2024-10-12 16:00:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51662 states, 51661 states have (on average 1.0804475329552274) internal successors, (55817), 51661 states have internal predecessors, (55817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51662 states to 51662 states and 55817 transitions. [2024-10-12 16:00:48,686 INFO L78 Accepts]: Start accepts. Automaton has 51662 states and 55817 transitions. Word has length 965 [2024-10-12 16:00:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:48,687 INFO L471 AbstractCegarLoop]: Abstraction has 51662 states and 55817 transitions. [2024-10-12 16:00:48,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 51662 states and 55817 transitions. [2024-10-12 16:00:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2024-10-12 16:00:48,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:48,734 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:48,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 16:00:48,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 16:00:48,935 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:48,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1959748, now seen corresponding path program 1 times [2024-10-12 16:00:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136190683] [2024-10-12 16:00:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-10-12 16:00:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136190683] [2024-10-12 16:00:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136190683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:00:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:00:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:00:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823170105] [2024-10-12 16:00:49,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:00:49,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:00:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:00:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:00:49,362 INFO L87 Difference]: Start difference. First operand 51662 states and 55817 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:00:49,890 INFO L93 Difference]: Finished difference Result 88215 states and 95383 transitions. [2024-10-12 16:00:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:00:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 1023 [2024-10-12 16:00:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:00:49,928 INFO L225 Difference]: With dead ends: 88215 [2024-10-12 16:00:49,928 INFO L226 Difference]: Without dead ends: 39130 [2024-10-12 16:00:49,955 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 [2024-10-12 16:00:49,956 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 97 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:00:49,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 282 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 16:00:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39130 states. [2024-10-12 16:00:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39130 to 37467. [2024-10-12 16:00:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37467 states, 37466 states have (on average 1.0766294773928362) internal successors, (40337), 37466 states have internal predecessors, (40337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37467 states to 37467 states and 40337 transitions. [2024-10-12 16:00:50,304 INFO L78 Accepts]: Start accepts. Automaton has 37467 states and 40337 transitions. Word has length 1023 [2024-10-12 16:00:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:00:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 37467 states and 40337 transitions. [2024-10-12 16:00:50,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:00:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37467 states and 40337 transitions. [2024-10-12 16:00:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2024-10-12 16:00:50,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:00:50,331 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:00:50,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 16:00:50,331 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:00:50,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:00:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 175313503, now seen corresponding path program 1 times [2024-10-12 16:00:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:00:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935619580] [2024-10-12 16:00:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:00:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2272 proven. 735 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-10-12 16:00:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:00:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935619580] [2024-10-12 16:00:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935619580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:00:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397559320] [2024-10-12 16:00:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:00:51,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:00:51,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:00:51,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:00:51,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 16:00:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:00:52,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:00:52,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:00:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2063 proven. 221 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2024-10-12 16:00:52,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:00:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 1928 proven. 192 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2024-10-12 16:00:54,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397559320] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:00:54,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:00:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-10-12 16:00:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159114206] [2024-10-12 16:00:54,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:00:54,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 16:00:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:00:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 16:00:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-10-12 16:00:54,087 INFO L87 Difference]: Start difference. First operand 37467 states and 40337 transitions. Second operand has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:01:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:01:00,506 INFO L93 Difference]: Finished difference Result 92223 states and 99191 transitions. [2024-10-12 16:01:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 16:01:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 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 1077 [2024-10-12 16:01:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:01:00,509 INFO L225 Difference]: With dead ends: 92223 [2024-10-12 16:01:00,509 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 16:01:00,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2196 GetRequests, 2165 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 16:01:00,521 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1720 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 16179 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 16532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 16179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:01:00,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 358 Invalid, 16532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 16179 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-12 16:01:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 16:01:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 16:01:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:01:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 16:01:00,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1077 [2024-10-12 16:01:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:01:00,523 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 16:01:00,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:01:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 16:01:00,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 16:01:00,525 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 16:01:00,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 16:01:00,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:01:00,729 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:01:00,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.