./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i -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 01c992e168948c865774d6071204a719c87c2df20b1fe8dee696318794ef867b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:02:29,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:02:29,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:02:29,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:02:29,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:02:29,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:02:29,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:02:29,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:02:29,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:02:29,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:02:29,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:02:29,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:02:29,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:02:29,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:02:29,525 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:02:29,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:02:29,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:02:29,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:02:29,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:02:29,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:02:29,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:02:29,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:02:29,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:02:29,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:02:29,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:02:29,529 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:02:29,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:02:29,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:02:29,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:02:29,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:02:29,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:02:29,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:02:29,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:02:29,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:02:29,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:02:29,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:02:29,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:02:29,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01c992e168948c865774d6071204a719c87c2df20b1fe8dee696318794ef867b [2024-11-22 12:02:29,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:02:29,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:02:29,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:02:29,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:02:29,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:02:29,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i [2024-11-22 12:02:30,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:02:31,225 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:02:31,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i [2024-11-22 12:02:31,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab0bc2b0/dd6cd05266f64c3e8eac47d05d8eae36/FLAGb9867825c [2024-11-22 12:02:31,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab0bc2b0/dd6cd05266f64c3e8eac47d05d8eae36 [2024-11-22 12:02:31,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:02:31,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:02:31,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:02:31,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:02:31,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:02:31,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:02:31" (1/1) ... [2024-11-22 12:02:31,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ced01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:31, skipping insertion in model container [2024-11-22 12:02:31,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:02:31" (1/1) ... [2024-11-22 12:02:31,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:02:31,749 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i[916,929] [2024-11-22 12:02:31,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:02:32,002 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:02:32,022 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-51.i[916,929] [2024-11-22 12:02:32,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:02:32,160 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:02:32,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32 WrapperNode [2024-11-22 12:02:32,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:02:32,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:02:32,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:02:32,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:02:32,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,273 INFO L138 Inliner]: procedures = 26, calls = 100, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 706 [2024-11-22 12:02:32,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:02:32,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:02:32,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:02:32,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:02:32,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,356 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 12:02:32,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:02:32,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:02:32,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:02:32,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:02:32,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (1/1) ... [2024-11-22 12:02:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:02:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:02:32,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 12:02:32,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 12:02:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:02:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:02:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:02:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:02:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:02:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:02:32,659 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:02:32,661 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:02:33,796 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-22 12:02:33,797 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:02:33,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:02:33,818 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:02:33,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:02:33 BoogieIcfgContainer [2024-11-22 12:02:33,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:02:33,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:02:33,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:02:33,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:02:33,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:02:31" (1/3) ... [2024-11-22 12:02:33,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e956fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:02:33, skipping insertion in model container [2024-11-22 12:02:33,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:02:32" (2/3) ... [2024-11-22 12:02:33,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e956fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:02:33, skipping insertion in model container [2024-11-22 12:02:33,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:02:33" (3/3) ... [2024-11-22 12:02:33,854 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-51.i [2024-11-22 12:02:33,868 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:02:33,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:02:33,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:02:33,936 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;@9da1ae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:02:33,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:02:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 201 states have (on average 1.5572139303482586) internal successors, (313), 202 states have internal predecessors, (313), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 12:02:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-22 12:02:33,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:33,972 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:33,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:33,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -326629358, now seen corresponding path program 1 times [2024-11-22 12:02:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:33,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427085759] [2024-11-22 12:02:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-22 12:02:34,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:34,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427085759] [2024-11-22 12:02:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427085759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:02:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995892093] [2024-11-22 12:02:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:02:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:02:34,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:02:34,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 12:02:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:34,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:02:34,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:02:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-22 12:02:34,938 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:02:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995892093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:34,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:02:34,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:02:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841050413] [2024-11-22 12:02:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:34,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:02:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:02:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:02:34,966 INFO L87 Difference]: Start difference. First operand has 291 states, 201 states have (on average 1.5572139303482586) internal successors, (313), 202 states have internal predecessors, (313), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 12:02:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:35,013 INFO L93 Difference]: Finished difference Result 575 states and 1055 transitions. [2024-11-22 12:02:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:02:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) Word has length 567 [2024-11-22 12:02:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:35,028 INFO L225 Difference]: With dead ends: 575 [2024-11-22 12:02:35,028 INFO L226 Difference]: Without dead ends: 287 [2024-11-22 12:02:35,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:02:35,035 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:35,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-22 12:02:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-22 12:02:35,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 198 states have (on average 1.5454545454545454) internal successors, (306), 198 states have internal predecessors, (306), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 12:02:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2024-11-22 12:02:35,106 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 567 [2024-11-22 12:02:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:35,107 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2024-11-22 12:02:35,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 12:02:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2024-11-22 12:02:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-22 12:02:35,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:35,121 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:35,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 12:02:35,324 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,SelfDestructingSolverStorable0 [2024-11-22 12:02:35,325 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:35,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1840276796, now seen corresponding path program 1 times [2024-11-22 12:02:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352946918] [2024-11-22 12:02:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352946918] [2024-11-22 12:02:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352946918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:35,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877924490] [2024-11-22 12:02:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:35,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:35,800 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:35,951 INFO L93 Difference]: Finished difference Result 767 states and 1284 transitions. [2024-11-22 12:02:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 567 [2024-11-22 12:02:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:35,956 INFO L225 Difference]: With dead ends: 767 [2024-11-22 12:02:35,957 INFO L226 Difference]: Without dead ends: 483 [2024-11-22 12:02:35,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:35,959 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 317 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:35,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1059 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:02:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-22 12:02:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 480. [2024-11-22 12:02:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 344 states have (on average 1.563953488372093) internal successors, (538), 345 states have internal predecessors, (538), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-22 12:02:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 804 transitions. [2024-11-22 12:02:36,023 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 804 transitions. Word has length 567 [2024-11-22 12:02:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:36,025 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 804 transitions. [2024-11-22 12:02:36,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 804 transitions. [2024-11-22 12:02:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-22 12:02:36,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:36,035 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:36,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:02:36,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:36,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash -486027094, now seen corresponding path program 1 times [2024-11-22 12:02:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:36,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306513799] [2024-11-22 12:02:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:36,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:36,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306513799] [2024-11-22 12:02:36,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306513799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:36,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:36,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:36,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968409527] [2024-11-22 12:02:36,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:36,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:36,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:36,412 INFO L87 Difference]: Start difference. First operand 480 states and 804 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:36,503 INFO L93 Difference]: Finished difference Result 1428 states and 2394 transitions. [2024-11-22 12:02:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 568 [2024-11-22 12:02:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:36,515 INFO L225 Difference]: With dead ends: 1428 [2024-11-22 12:02:36,517 INFO L226 Difference]: Without dead ends: 951 [2024-11-22 12:02:36,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:36,520 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 445 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:36,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1100 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-22 12:02:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 949. [2024-11-22 12:02:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 678 states have (on average 1.556047197640118) internal successors, (1055), 680 states have internal predecessors, (1055), 266 states have call successors, (266), 4 states have call predecessors, (266), 4 states have return successors, (266), 264 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-22 12:02:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1587 transitions. [2024-11-22 12:02:36,623 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1587 transitions. Word has length 568 [2024-11-22 12:02:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:36,625 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1587 transitions. [2024-11-22 12:02:36,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1587 transitions. [2024-11-22 12:02:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-22 12:02:36,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:36,635 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:36,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:02:36,635 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:36,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 353006568, now seen corresponding path program 1 times [2024-11-22 12:02:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:36,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007681041] [2024-11-22 12:02:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:36,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:36,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007681041] [2024-11-22 12:02:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007681041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:36,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:36,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:36,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728227035] [2024-11-22 12:02:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:36,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:36,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:36,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:36,947 INFO L87 Difference]: Start difference. First operand 949 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:37,048 INFO L93 Difference]: Finished difference Result 2785 states and 4649 transitions. [2024-11-22 12:02:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 568 [2024-11-22 12:02:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:37,061 INFO L225 Difference]: With dead ends: 2785 [2024-11-22 12:02:37,061 INFO L226 Difference]: Without dead ends: 1839 [2024-11-22 12:02:37,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:37,065 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 400 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:37,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 932 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2024-11-22 12:02:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1229. [2024-11-22 12:02:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 958 states have (on average 1.616910229645094) internal successors, (1549), 960 states have internal predecessors, (1549), 266 states have call successors, (266), 4 states have call predecessors, (266), 4 states have return successors, (266), 264 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-22 12:02:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2081 transitions. [2024-11-22 12:02:37,204 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2081 transitions. Word has length 568 [2024-11-22 12:02:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:37,205 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 2081 transitions. [2024-11-22 12:02:37,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2081 transitions. [2024-11-22 12:02:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-22 12:02:37,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:37,214 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:37,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:02:37,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:37,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash -926857110, now seen corresponding path program 1 times [2024-11-22 12:02:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869041764] [2024-11-22 12:02:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:37,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:37,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869041764] [2024-11-22 12:02:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869041764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:37,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381439870] [2024-11-22 12:02:37,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:37,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:37,980 INFO L87 Difference]: Start difference. First operand 1229 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:38,065 INFO L93 Difference]: Finished difference Result 3599 states and 6096 transitions. [2024-11-22 12:02:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:38,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 568 [2024-11-22 12:02:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:38,077 INFO L225 Difference]: With dead ends: 3599 [2024-11-22 12:02:38,077 INFO L226 Difference]: Without dead ends: 2373 [2024-11-22 12:02:38,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:38,082 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 319 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:38,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1024 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2024-11-22 12:02:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2369. [2024-11-22 12:02:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 1828 states have (on average 1.612691466083151) internal successors, (2948), 1832 states have internal predecessors, (2948), 532 states have call successors, (532), 8 states have call predecessors, (532), 8 states have return successors, (532), 528 states have call predecessors, (532), 532 states have call successors, (532) [2024-11-22 12:02:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 4012 transitions. [2024-11-22 12:02:38,228 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 4012 transitions. Word has length 568 [2024-11-22 12:02:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:38,229 INFO L471 AbstractCegarLoop]: Abstraction has 2369 states and 4012 transitions. [2024-11-22 12:02:38,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 4012 transitions. [2024-11-22 12:02:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-22 12:02:38,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:38,233 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:38,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:02:38,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:38,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1034717548, now seen corresponding path program 1 times [2024-11-22 12:02:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669728156] [2024-11-22 12:02:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669728156] [2024-11-22 12:02:38,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669728156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:38,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:38,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781612997] [2024-11-22 12:02:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:38,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:38,910 INFO L87 Difference]: Start difference. First operand 2369 states and 4012 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:39,074 INFO L93 Difference]: Finished difference Result 7101 states and 12030 transitions. [2024-11-22 12:02:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 568 [2024-11-22 12:02:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:39,100 INFO L225 Difference]: With dead ends: 7101 [2024-11-22 12:02:39,100 INFO L226 Difference]: Without dead ends: 4735 [2024-11-22 12:02:39,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:39,111 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 300 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:39,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 949 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2024-11-22 12:02:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4733. [2024-11-22 12:02:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 3652 states have (on average 1.6089813800657173) internal successors, (5876), 3660 states have internal predecessors, (5876), 1064 states have call successors, (1064), 16 states have call predecessors, (1064), 16 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2024-11-22 12:02:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 8004 transitions. [2024-11-22 12:02:39,526 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 8004 transitions. Word has length 568 [2024-11-22 12:02:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:39,527 INFO L471 AbstractCegarLoop]: Abstraction has 4733 states and 8004 transitions. [2024-11-22 12:02:39,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 8004 transitions. [2024-11-22 12:02:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-22 12:02:39,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:39,533 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:39,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:02:39,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:39,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1282864042, now seen corresponding path program 1 times [2024-11-22 12:02:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346311764] [2024-11-22 12:02:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346311764] [2024-11-22 12:02:40,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346311764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:40,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:02:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506808243] [2024-11-22 12:02:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:40,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:02:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:02:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:02:40,313 INFO L87 Difference]: Start difference. First operand 4733 states and 8004 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 12:02:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:41,019 INFO L93 Difference]: Finished difference Result 11311 states and 19189 transitions. [2024-11-22 12:02:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:02:41,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 568 [2024-11-22 12:02:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:41,050 INFO L225 Difference]: With dead ends: 11311 [2024-11-22 12:02:41,050 INFO L226 Difference]: Without dead ends: 6581 [2024-11-22 12:02:41,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:02:41,065 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 434 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:41,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2096 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:02:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-11-22 12:02:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 5219. [2024-11-22 12:02:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 4050 states have (on average 1.6091358024691358) internal successors, (6517), 4058 states have internal predecessors, (6517), 1151 states have call successors, (1151), 17 states have call predecessors, (1151), 17 states have return successors, (1151), 1143 states have call predecessors, (1151), 1151 states have call successors, (1151) [2024-11-22 12:02:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 8819 transitions. [2024-11-22 12:02:41,458 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 8819 transitions. Word has length 568 [2024-11-22 12:02:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:41,459 INFO L471 AbstractCegarLoop]: Abstraction has 5219 states and 8819 transitions. [2024-11-22 12:02:41,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 12:02:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 8819 transitions. [2024-11-22 12:02:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-22 12:02:41,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:41,464 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:41,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:02:41,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:41,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash 460250180, now seen corresponding path program 1 times [2024-11-22 12:02:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103042589] [2024-11-22 12:02:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103042589] [2024-11-22 12:02:42,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103042589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:42,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:02:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981360495] [2024-11-22 12:02:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:42,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:02:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:42,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:02:42,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:02:42,532 INFO L87 Difference]: Start difference. First operand 5219 states and 8819 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:43,005 INFO L93 Difference]: Finished difference Result 14495 states and 24487 transitions. [2024-11-22 12:02:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:02:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 569 [2024-11-22 12:02:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:43,050 INFO L225 Difference]: With dead ends: 14495 [2024-11-22 12:02:43,050 INFO L226 Difference]: Without dead ends: 9645 [2024-11-22 12:02:43,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:02:43,066 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 332 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:43,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1586 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:02:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2024-11-22 12:02:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 9635. [2024-11-22 12:02:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9635 states, 7634 states have (on average 1.6095100864553313) internal successors, (12287), 7658 states have internal predecessors, (12287), 1967 states have call successors, (1967), 33 states have call predecessors, (1967), 33 states have return successors, (1967), 1943 states have call predecessors, (1967), 1967 states have call successors, (1967) [2024-11-22 12:02:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9635 states to 9635 states and 16221 transitions. [2024-11-22 12:02:43,608 INFO L78 Accepts]: Start accepts. Automaton has 9635 states and 16221 transitions. Word has length 569 [2024-11-22 12:02:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:43,611 INFO L471 AbstractCegarLoop]: Abstraction has 9635 states and 16221 transitions. [2024-11-22 12:02:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9635 states and 16221 transitions. [2024-11-22 12:02:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-22 12:02:43,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:43,622 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:43,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:02:43,622 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:43,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1994903356, now seen corresponding path program 1 times [2024-11-22 12:02:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:43,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377607010] [2024-11-22 12:02:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377607010] [2024-11-22 12:02:44,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377607010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:44,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:44,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:02:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024249351] [2024-11-22 12:02:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:44,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:02:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:02:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:02:44,798 INFO L87 Difference]: Start difference. First operand 9635 states and 16221 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:45,666 INFO L93 Difference]: Finished difference Result 18741 states and 31524 transitions. [2024-11-22 12:02:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:02:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 569 [2024-11-22 12:02:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:45,711 INFO L225 Difference]: With dead ends: 18741 [2024-11-22 12:02:45,711 INFO L226 Difference]: Without dead ends: 9791 [2024-11-22 12:02:45,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:02:45,740 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 734 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:45,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1725 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:02:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2024-11-22 12:02:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 9771. [2024-11-22 12:02:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9771 states, 7682 states have (on average 1.5919031502212966) internal successors, (12229), 7706 states have internal predecessors, (12229), 2047 states have call successors, (2047), 41 states have call predecessors, (2047), 41 states have return successors, (2047), 2023 states have call predecessors, (2047), 2047 states have call successors, (2047) [2024-11-22 12:02:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 16323 transitions. [2024-11-22 12:02:46,576 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 16323 transitions. Word has length 569 [2024-11-22 12:02:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:46,577 INFO L471 AbstractCegarLoop]: Abstraction has 9771 states and 16323 transitions. [2024-11-22 12:02:46,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 16323 transitions. [2024-11-22 12:02:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-22 12:02:46,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:46,585 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:46,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 12:02:46,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:46,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -982221254, now seen corresponding path program 1 times [2024-11-22 12:02:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612222532] [2024-11-22 12:02:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:46,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 18 proven. 240 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:02:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612222532] [2024-11-22 12:02:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612222532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:02:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168825902] [2024-11-22 12:02:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:48,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:02:48,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:02:48,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:02:48,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 12:02:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:49,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 12:02:49,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:02:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 6378 proven. 180 refuted. 0 times theorem prover too weak. 8406 trivial. 0 not checked. [2024-11-22 12:02:49,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:02:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 78 proven. 180 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:02:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168825902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:02:50,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:02:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-22 12:02:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967504547] [2024-11-22 12:02:50,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:02:50,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 12:02:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 12:02:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-22 12:02:50,481 INFO L87 Difference]: Start difference. First operand 9771 states and 16323 transitions. Second operand has 16 states, 16 states have (on average 22.5625) internal successors, (361), 16 states have internal predecessors, (361), 5 states have call successors, (234), 2 states have call predecessors, (234), 4 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) [2024-11-22 12:02:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:53,226 INFO L93 Difference]: Finished difference Result 32830 states and 54542 transitions. [2024-11-22 12:02:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 12:02:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.5625) internal successors, (361), 16 states have internal predecessors, (361), 5 states have call successors, (234), 2 states have call predecessors, (234), 4 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) Word has length 569 [2024-11-22 12:02:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:53,301 INFO L225 Difference]: With dead ends: 32830 [2024-11-22 12:02:53,301 INFO L226 Difference]: Without dead ends: 23228 [2024-11-22 12:02:53,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 12:02:53,328 INFO L432 NwaCegarLoop]: 670 mSDtfsCounter, 2621 mSDsluCounter, 4403 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5073 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:53,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2648 Valid, 5073 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 12:02:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23228 states. [2024-11-22 12:02:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23228 to 12375. [2024-11-22 12:02:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12375 states, 10252 states have (on average 1.609442060085837) internal successors, (16500), 10276 states have internal predecessors, (16500), 2047 states have call successors, (2047), 75 states have call predecessors, (2047), 75 states have return successors, (2047), 2023 states have call predecessors, (2047), 2047 states have call successors, (2047) [2024-11-22 12:02:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 20594 transitions. [2024-11-22 12:02:54,630 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 20594 transitions. Word has length 569 [2024-11-22 12:02:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:54,631 INFO L471 AbstractCegarLoop]: Abstraction has 12375 states and 20594 transitions. [2024-11-22 12:02:54,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.5625) internal successors, (361), 16 states have internal predecessors, (361), 5 states have call successors, (234), 2 states have call predecessors, (234), 4 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) [2024-11-22 12:02:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 20594 transitions. [2024-11-22 12:02:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-22 12:02:54,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:54,643 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:54,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 12:02:54,844 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,SelfDestructingSolverStorable9 [2024-11-22 12:02:54,844 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:54,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash 611629640, now seen corresponding path program 1 times [2024-11-22 12:02:54,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:54,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478938075] [2024-11-22 12:02:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 54 proven. 204 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:02:56,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478938075] [2024-11-22 12:02:56,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478938075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:02:56,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302661121] [2024-11-22 12:02:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:56,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:02:56,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:02:56,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:02:56,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 12:02:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:56,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 12:02:56,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:02:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7512 proven. 117 refuted. 0 times theorem prover too weak. 7335 trivial. 0 not checked. [2024-11-22 12:02:56,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:02:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 141 proven. 117 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:02:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302661121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:02:57,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:02:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2024-11-22 12:02:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243256584] [2024-11-22 12:02:57,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:02:57,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 12:02:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:57,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 12:02:57,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 12:02:57,206 INFO L87 Difference]: Start difference. First operand 12375 states and 20594 transitions. Second operand has 10 states, 10 states have (on average 23.5) internal successors, (235), 10 states have internal predecessors, (235), 3 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (196), 3 states have call predecessors, (196), 3 states have call successors, (196) [2024-11-22 12:02:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:58,359 INFO L93 Difference]: Finished difference Result 23985 states and 39995 transitions. [2024-11-22 12:02:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 12:02:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.5) internal successors, (235), 10 states have internal predecessors, (235), 3 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (196), 3 states have call predecessors, (196), 3 states have call successors, (196) Word has length 570 [2024-11-22 12:02:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:58,398 INFO L225 Difference]: With dead ends: 23985 [2024-11-22 12:02:58,398 INFO L226 Difference]: Without dead ends: 11779 [2024-11-22 12:02:58,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1138 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2024-11-22 12:02:58,421 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1448 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:58,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1401 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 12:02:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11779 states. [2024-11-22 12:02:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11779 to 11659. [2024-11-22 12:02:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11659 states, 10053 states have (on average 1.628369640903213) internal successors, (16370), 10077 states have internal predecessors, (16370), 1519 states have call successors, (1519), 86 states have call predecessors, (1519), 86 states have return successors, (1519), 1495 states have call predecessors, (1519), 1519 states have call successors, (1519) [2024-11-22 12:02:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11659 states to 11659 states and 19408 transitions. [2024-11-22 12:02:58,968 INFO L78 Accepts]: Start accepts. Automaton has 11659 states and 19408 transitions. Word has length 570 [2024-11-22 12:02:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:02:58,969 INFO L471 AbstractCegarLoop]: Abstraction has 11659 states and 19408 transitions. [2024-11-22 12:02:58,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.5) internal successors, (235), 10 states have internal predecessors, (235), 3 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (196), 3 states have call predecessors, (196), 3 states have call successors, (196) [2024-11-22 12:02:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11659 states and 19408 transitions. [2024-11-22 12:02:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-22 12:02:58,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:02:58,977 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:02:58,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 12:02:59,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:02:59,178 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:02:59,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:02:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1618735304, now seen corresponding path program 1 times [2024-11-22 12:02:59,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:02:59,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621642404] [2024-11-22 12:02:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:02:59,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:02:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:02:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:02:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:02:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621642404] [2024-11-22 12:02:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621642404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:02:59,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:02:59,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:02:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382227953] [2024-11-22 12:02:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:02:59,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:02:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:02:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:02:59,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:59,363 INFO L87 Difference]: Start difference. First operand 11659 states and 19408 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:02:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:02:59,805 INFO L93 Difference]: Finished difference Result 33707 states and 56190 transitions. [2024-11-22 12:02:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:02:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 570 [2024-11-22 12:02:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:02:59,867 INFO L225 Difference]: With dead ends: 33707 [2024-11-22 12:02:59,867 INFO L226 Difference]: Without dead ends: 22499 [2024-11-22 12:02:59,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:02:59,890 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 431 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:02:59,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 966 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:02:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22499 states. [2024-11-22 12:03:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22499 to 17383. [2024-11-22 12:03:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17383 states, 15777 states have (on average 1.6600114090131204) internal successors, (26190), 15801 states have internal predecessors, (26190), 1519 states have call successors, (1519), 86 states have call predecessors, (1519), 86 states have return successors, (1519), 1495 states have call predecessors, (1519), 1519 states have call successors, (1519) [2024-11-22 12:03:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17383 states to 17383 states and 29228 transitions. [2024-11-22 12:03:00,653 INFO L78 Accepts]: Start accepts. Automaton has 17383 states and 29228 transitions. Word has length 570 [2024-11-22 12:03:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:00,654 INFO L471 AbstractCegarLoop]: Abstraction has 17383 states and 29228 transitions. [2024-11-22 12:03:00,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 17383 states and 29228 transitions. [2024-11-22 12:03:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-22 12:03:00,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:00,664 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:00,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 12:03:00,664 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:00,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 598876980, now seen corresponding path program 1 times [2024-11-22 12:03:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:00,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79834779] [2024-11-22 12:03:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:00,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:03:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79834779] [2024-11-22 12:03:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79834779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310005122] [2024-11-22 12:03:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:00,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:00,836 INFO L87 Difference]: Start difference. First operand 17383 states and 29228 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:01,307 INFO L93 Difference]: Finished difference Result 37207 states and 61862 transitions. [2024-11-22 12:03:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:01,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 570 [2024-11-22 12:03:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:01,375 INFO L225 Difference]: With dead ends: 37207 [2024-11-22 12:03:01,375 INFO L226 Difference]: Without dead ends: 22499 [2024-11-22 12:03:01,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:01,403 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 427 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:01,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1349 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22499 states. [2024-11-22 12:03:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22499 to 17383. [2024-11-22 12:03:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17383 states, 15777 states have (on average 1.6493629967674464) internal successors, (26022), 15801 states have internal predecessors, (26022), 1519 states have call successors, (1519), 86 states have call predecessors, (1519), 86 states have return successors, (1519), 1495 states have call predecessors, (1519), 1519 states have call successors, (1519) [2024-11-22 12:03:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17383 states to 17383 states and 29060 transitions. [2024-11-22 12:03:02,422 INFO L78 Accepts]: Start accepts. Automaton has 17383 states and 29060 transitions. Word has length 570 [2024-11-22 12:03:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:02,423 INFO L471 AbstractCegarLoop]: Abstraction has 17383 states and 29060 transitions. [2024-11-22 12:03:02,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 17383 states and 29060 transitions. [2024-11-22 12:03:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-22 12:03:02,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:02,437 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:02,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 12:03:02,437 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:02,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:02,438 INFO L85 PathProgramCache]: Analyzing trace with hash 643828780, now seen corresponding path program 1 times [2024-11-22 12:03:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:02,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305885363] [2024-11-22 12:03:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:02,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:03:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305885363] [2024-11-22 12:03:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305885363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585665222] [2024-11-22 12:03:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:03,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:03,416 INFO L87 Difference]: Start difference. First operand 17383 states and 29060 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:04,064 INFO L93 Difference]: Finished difference Result 26455 states and 43874 transitions. [2024-11-22 12:03:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:03:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 571 [2024-11-22 12:03:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:04,106 INFO L225 Difference]: With dead ends: 26455 [2024-11-22 12:03:04,106 INFO L226 Difference]: Without dead ends: 11571 [2024-11-22 12:03:04,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:04,129 INFO L432 NwaCegarLoop]: 734 mSDtfsCounter, 701 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:04,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1295 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:03:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11571 states. [2024-11-22 12:03:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11571 to 11571. [2024-11-22 12:03:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11571 states, 9948 states have (on average 1.6096702854845195) internal successors, (16013), 9972 states have internal predecessors, (16013), 1519 states have call successors, (1519), 103 states have call predecessors, (1519), 103 states have return successors, (1519), 1495 states have call predecessors, (1519), 1519 states have call successors, (1519) [2024-11-22 12:03:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 19051 transitions. [2024-11-22 12:03:04,699 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 19051 transitions. Word has length 571 [2024-11-22 12:03:04,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:04,699 INFO L471 AbstractCegarLoop]: Abstraction has 11571 states and 19051 transitions. [2024-11-22 12:03:04,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 19051 transitions. [2024-11-22 12:03:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-22 12:03:04,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:04,706 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:04,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 12:03:04,706 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:04,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash -516564999, now seen corresponding path program 1 times [2024-11-22 12:03:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:04,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168669772] [2024-11-22 12:03:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:03:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168669772] [2024-11-22 12:03:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168669772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:05,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:03:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503941443] [2024-11-22 12:03:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:05,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:03:05,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:03:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:03:05,898 INFO L87 Difference]: Start difference. First operand 11571 states and 19051 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:06,830 INFO L93 Difference]: Finished difference Result 30050 states and 49493 transitions. [2024-11-22 12:03:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:03:06,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 572 [2024-11-22 12:03:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:06,878 INFO L225 Difference]: With dead ends: 30050 [2024-11-22 12:03:06,879 INFO L226 Difference]: Without dead ends: 20438 [2024-11-22 12:03:06,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:03:06,897 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 784 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:06,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 2061 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:03:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20438 states. [2024-11-22 12:03:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20438 to 18690. [2024-11-22 12:03:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18690 states, 16464 states have (on average 1.618561710398445) internal successors, (26648), 16516 states have internal predecessors, (26648), 2079 states have call successors, (2079), 146 states have call predecessors, (2079), 146 states have return successors, (2079), 2027 states have call predecessors, (2079), 2079 states have call successors, (2079) [2024-11-22 12:03:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18690 states to 18690 states and 30806 transitions. [2024-11-22 12:03:07,558 INFO L78 Accepts]: Start accepts. Automaton has 18690 states and 30806 transitions. Word has length 572 [2024-11-22 12:03:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:07,559 INFO L471 AbstractCegarLoop]: Abstraction has 18690 states and 30806 transitions. [2024-11-22 12:03:07,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18690 states and 30806 transitions. [2024-11-22 12:03:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-22 12:03:07,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:07,566 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:07,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 12:03:07,567 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:07,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash -979060989, now seen corresponding path program 1 times [2024-11-22 12:03:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:07,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429036202] [2024-11-22 12:03:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 114 proven. 144 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:08,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429036202] [2024-11-22 12:03:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429036202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147713820] [2024-11-22 12:03:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:08,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:08,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 12:03:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:09,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 12:03:09,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 3786 proven. 36 refuted. 0 times theorem prover too weak. 11142 trivial. 0 not checked. [2024-11-22 12:03:09,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 222 proven. 36 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147713820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:10,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:10,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 17 [2024-11-22 12:03:10,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812399459] [2024-11-22 12:03:10,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:10,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 12:03:10,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 12:03:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:03:10,228 INFO L87 Difference]: Start difference. First operand 18690 states and 30806 transitions. Second operand has 17 states, 17 states have (on average 19.764705882352942) internal successors, (336), 17 states have internal predecessors, (336), 5 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (223), 5 states have call predecessors, (223), 5 states have call successors, (223) [2024-11-22 12:03:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:11,740 INFO L93 Difference]: Finished difference Result 36874 states and 60651 transitions. [2024-11-22 12:03:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 12:03:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.764705882352942) internal successors, (336), 17 states have internal predecessors, (336), 5 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (223), 5 states have call predecessors, (223), 5 states have call successors, (223) Word has length 573 [2024-11-22 12:03:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:11,794 INFO L225 Difference]: With dead ends: 36874 [2024-11-22 12:03:11,794 INFO L226 Difference]: Without dead ends: 18804 [2024-11-22 12:03:11,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1134 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-22 12:03:11,822 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1165 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:11,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1689 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 12:03:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18804 states. [2024-11-22 12:03:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18804 to 10644. [2024-11-22 12:03:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10644 states, 9426 states have (on average 1.5375556970082749) internal successors, (14493), 9454 states have internal predecessors, (14493), 1123 states have call successors, (1123), 94 states have call predecessors, (1123), 94 states have return successors, (1123), 1095 states have call predecessors, (1123), 1123 states have call successors, (1123) [2024-11-22 12:03:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 16739 transitions. [2024-11-22 12:03:12,485 INFO L78 Accepts]: Start accepts. Automaton has 10644 states and 16739 transitions. Word has length 573 [2024-11-22 12:03:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:12,485 INFO L471 AbstractCegarLoop]: Abstraction has 10644 states and 16739 transitions. [2024-11-22 12:03:12,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.764705882352942) internal successors, (336), 17 states have internal predecessors, (336), 5 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (223), 5 states have call predecessors, (223), 5 states have call successors, (223) [2024-11-22 12:03:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10644 states and 16739 transitions. [2024-11-22 12:03:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 12:03:12,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:12,491 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:12,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 12:03:12,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 12:03:12,692 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:12,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:12,693 INFO L85 PathProgramCache]: Analyzing trace with hash 828165205, now seen corresponding path program 1 times [2024-11-22 12:03:12,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:12,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827846274] [2024-11-22 12:03:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:12,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 36 proven. 222 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827846274] [2024-11-22 12:03:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827846274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733704864] [2024-11-22 12:03:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:13,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:13,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:13,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 12:03:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:14,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 12:03:14,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 5087 proven. 444 refuted. 0 times theorem prover too weak. 9433 trivial. 0 not checked. [2024-11-22 12:03:15,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 66 proven. 447 refuted. 0 times theorem prover too weak. 14451 trivial. 0 not checked. [2024-11-22 12:03:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733704864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:15,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2024-11-22 12:03:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433798114] [2024-11-22 12:03:15,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:15,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 12:03:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:15,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 12:03:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:03:15,506 INFO L87 Difference]: Start difference. First operand 10644 states and 16739 transitions. Second operand has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 6 states have call successors, (249), 3 states have call predecessors, (249), 7 states have return successors, (251), 6 states have call predecessors, (251), 6 states have call successors, (251) [2024-11-22 12:03:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:16,632 INFO L93 Difference]: Finished difference Result 16699 states and 26017 transitions. [2024-11-22 12:03:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 12:03:16,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 6 states have call successors, (249), 3 states have call predecessors, (249), 7 states have return successors, (251), 6 states have call predecessors, (251), 6 states have call successors, (251) Word has length 574 [2024-11-22 12:03:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:16,650 INFO L225 Difference]: With dead ends: 16699 [2024-11-22 12:03:16,650 INFO L226 Difference]: Without dead ends: 6261 [2024-11-22 12:03:16,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1139 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 12:03:16,658 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 969 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:16,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1573 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:03:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2024-11-22 12:03:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 6136. [2024-11-22 12:03:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 5171 states have (on average 1.4894604525236899) internal successors, (7702), 5183 states have internal predecessors, (7702), 835 states have call successors, (835), 129 states have call predecessors, (835), 129 states have return successors, (835), 823 states have call predecessors, (835), 835 states have call successors, (835) [2024-11-22 12:03:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 9372 transitions. [2024-11-22 12:03:17,015 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 9372 transitions. Word has length 574 [2024-11-22 12:03:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:17,016 INFO L471 AbstractCegarLoop]: Abstraction has 6136 states and 9372 transitions. [2024-11-22 12:03:17,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 6 states have call successors, (249), 3 states have call predecessors, (249), 7 states have return successors, (251), 6 states have call predecessors, (251), 6 states have call successors, (251) [2024-11-22 12:03:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 9372 transitions. [2024-11-22 12:03:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2024-11-22 12:03:17,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:17,020 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:17,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 12:03:17,220 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,SelfDestructingSolverStorable16 [2024-11-22 12:03:17,220 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:17,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1539306415, now seen corresponding path program 1 times [2024-11-22 12:03:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614197779] [2024-11-22 12:03:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 135 proven. 123 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614197779] [2024-11-22 12:03:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614197779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810521751] [2024-11-22 12:03:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:18,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:18,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 12:03:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:19,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 12:03:19,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7556 proven. 123 refuted. 0 times theorem prover too weak. 7285 trivial. 0 not checked. [2024-11-22 12:03:19,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 135 proven. 123 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:20,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810521751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:20,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2024-11-22 12:03:20,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722486310] [2024-11-22 12:03:20,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:20,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 12:03:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 12:03:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-22 12:03:20,486 INFO L87 Difference]: Start difference. First operand 6136 states and 9372 transitions. Second operand has 19 states, 19 states have (on average 14.947368421052632) internal successors, (284), 19 states have internal predecessors, (284), 5 states have call successors, (215), 3 states have call predecessors, (215), 6 states have return successors, (216), 5 states have call predecessors, (216), 5 states have call successors, (216) [2024-11-22 12:03:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:22,381 INFO L93 Difference]: Finished difference Result 8338 states and 12684 transitions. [2024-11-22 12:03:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 12:03:22,382 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.947368421052632) internal successors, (284), 19 states have internal predecessors, (284), 5 states have call successors, (215), 3 states have call predecessors, (215), 6 states have return successors, (216), 5 states have call predecessors, (216), 5 states have call successors, (216) Word has length 575 [2024-11-22 12:03:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:22,395 INFO L225 Difference]: With dead ends: 8338 [2024-11-22 12:03:22,395 INFO L226 Difference]: Without dead ends: 3066 [2024-11-22 12:03:22,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1142 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 12:03:22,402 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 2158 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:22,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 2377 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 12:03:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2024-11-22 12:03:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2167. [2024-11-22 12:03:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1797 states have (on average 1.473010573177518) internal successors, (2647), 1800 states have internal predecessors, (2647), 318 states have call successors, (318), 51 states have call predecessors, (318), 51 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) [2024-11-22 12:03:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3283 transitions. [2024-11-22 12:03:22,559 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3283 transitions. Word has length 575 [2024-11-22 12:03:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:22,559 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3283 transitions. [2024-11-22 12:03:22,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.947368421052632) internal successors, (284), 19 states have internal predecessors, (284), 5 states have call successors, (215), 3 states have call predecessors, (215), 6 states have return successors, (216), 5 states have call predecessors, (216), 5 states have call successors, (216) [2024-11-22 12:03:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3283 transitions. [2024-11-22 12:03:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 12:03:22,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:22,563 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:22,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 12:03:22,764 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,SelfDestructingSolverStorable17 [2024-11-22 12:03:22,765 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:22,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash -416617703, now seen corresponding path program 1 times [2024-11-22 12:03:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58080539] [2024-11-22 12:03:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 171 proven. 87 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58080539] [2024-11-22 12:03:24,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58080539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714520143] [2024-11-22 12:03:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:24,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:24,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 12:03:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:24,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 12:03:24,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 6638 proven. 174 refuted. 0 times theorem prover too weak. 8152 trivial. 0 not checked. [2024-11-22 12:03:25,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:03:25,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714520143] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:25,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 12:03:25,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 8] total 11 [2024-11-22 12:03:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397310745] [2024-11-22 12:03:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:25,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:03:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:03:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 12:03:25,757 INFO L87 Difference]: Start difference. First operand 2167 states and 3283 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:26,062 INFO L93 Difference]: Finished difference Result 5179 states and 7907 transitions. [2024-11-22 12:03:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:03:26,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 576 [2024-11-22 12:03:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:26,073 INFO L225 Difference]: With dead ends: 5179 [2024-11-22 12:03:26,073 INFO L226 Difference]: Without dead ends: 3707 [2024-11-22 12:03:26,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 1146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-22 12:03:26,076 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 184 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:26,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1759 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:03:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2024-11-22 12:03:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3701. [2024-11-22 12:03:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3279 states have (on average 1.5099115584019518) internal successors, (4951), 3286 states have internal predecessors, (4951), 358 states have call successors, (358), 63 states have call predecessors, (358), 63 states have return successors, (358), 351 states have call predecessors, (358), 358 states have call successors, (358) [2024-11-22 12:03:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 5667 transitions. [2024-11-22 12:03:26,269 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 5667 transitions. Word has length 576 [2024-11-22 12:03:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:26,270 INFO L471 AbstractCegarLoop]: Abstraction has 3701 states and 5667 transitions. [2024-11-22 12:03:26,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 5667 transitions. [2024-11-22 12:03:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 12:03:26,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:26,274 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:26,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 12:03:26,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:26,475 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:26,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1095533369, now seen corresponding path program 1 times [2024-11-22 12:03:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:26,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919294277] [2024-11-22 12:03:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 171 proven. 87 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:27,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919294277] [2024-11-22 12:03:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919294277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856275406] [2024-11-22 12:03:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:27,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:27,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:27,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:27,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 12:03:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:28,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 12:03:28,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 4262 proven. 42 refuted. 0 times theorem prover too weak. 10660 trivial. 0 not checked. [2024-11-22 12:03:28,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 216 proven. 42 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:28,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856275406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:28,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 17 [2024-11-22 12:03:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565988736] [2024-11-22 12:03:28,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:28,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 12:03:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 12:03:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:03:28,506 INFO L87 Difference]: Start difference. First operand 3701 states and 5667 transitions. Second operand has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2024-11-22 12:03:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:29,917 INFO L93 Difference]: Finished difference Result 6767 states and 10349 transitions. [2024-11-22 12:03:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 12:03:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 577 [2024-11-22 12:03:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:29,928 INFO L225 Difference]: With dead ends: 6767 [2024-11-22 12:03:29,928 INFO L226 Difference]: Without dead ends: 3789 [2024-11-22 12:03:29,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1147 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=424, Invalid=1382, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 12:03:29,932 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 3037 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:29,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 2723 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 12:03:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2024-11-22 12:03:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 2243. [2024-11-22 12:03:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1960 states have (on average 1.5020408163265306) internal successors, (2944), 1963 states have internal predecessors, (2944), 238 states have call successors, (238), 44 states have call predecessors, (238), 44 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-22 12:03:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3420 transitions. [2024-11-22 12:03:30,072 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3420 transitions. Word has length 577 [2024-11-22 12:03:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:30,073 INFO L471 AbstractCegarLoop]: Abstraction has 2243 states and 3420 transitions. [2024-11-22 12:03:30,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2024-11-22 12:03:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3420 transitions. [2024-11-22 12:03:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 12:03:30,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:30,076 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:30,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 12:03:30,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:30,277 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:30,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1557997123, now seen corresponding path program 1 times [2024-11-22 12:03:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809147375] [2024-11-22 12:03:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 12:03:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809147375] [2024-11-22 12:03:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809147375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:30,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625967720] [2024-11-22 12:03:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:30,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:30,891 INFO L87 Difference]: Start difference. First operand 2243 states and 3420 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:31,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:31,214 INFO L93 Difference]: Finished difference Result 4177 states and 6401 transitions. [2024-11-22 12:03:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:03:31,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 577 [2024-11-22 12:03:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:31,224 INFO L225 Difference]: With dead ends: 4177 [2024-11-22 12:03:31,224 INFO L226 Difference]: Without dead ends: 2243 [2024-11-22 12:03:31,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:31,226 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 661 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:31,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 482 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:03:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2024-11-22 12:03:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2243. [2024-11-22 12:03:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1960 states have (on average 1.4959183673469387) internal successors, (2932), 1963 states have internal predecessors, (2932), 238 states have call successors, (238), 44 states have call predecessors, (238), 44 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-22 12:03:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3408 transitions. [2024-11-22 12:03:31,360 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3408 transitions. Word has length 577 [2024-11-22 12:03:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:31,360 INFO L471 AbstractCegarLoop]: Abstraction has 2243 states and 3408 transitions. [2024-11-22 12:03:31,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 12:03:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3408 transitions. [2024-11-22 12:03:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 12:03:31,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:31,364 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:31,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 12:03:31,364 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:31,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1520816447, now seen corresponding path program 1 times [2024-11-22 12:03:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:31,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231017738] [2024-11-22 12:03:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 420 proven. 90 refuted. 0 times theorem prover too weak. 14454 trivial. 0 not checked. [2024-11-22 12:03:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231017738] [2024-11-22 12:03:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231017738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49061774] [2024-11-22 12:03:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:32,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:32,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:32,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 12:03:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:32,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 12:03:32,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 5051 proven. 90 refuted. 0 times theorem prover too weak. 9823 trivial. 0 not checked. [2024-11-22 12:03:33,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 420 proven. 93 refuted. 0 times theorem prover too weak. 14451 trivial. 0 not checked. [2024-11-22 12:03:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49061774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:33,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-11-22 12:03:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310050409] [2024-11-22 12:03:33,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 12:03:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 12:03:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-22 12:03:33,458 INFO L87 Difference]: Start difference. First operand 2243 states and 3408 transitions. Second operand has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 6 states have call successors, (121), 3 states have call predecessors, (121), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2024-11-22 12:03:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:34,191 INFO L93 Difference]: Finished difference Result 4213 states and 6407 transitions. [2024-11-22 12:03:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 12:03:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 6 states have call successors, (121), 3 states have call predecessors, (121), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) Word has length 577 [2024-11-22 12:03:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:34,202 INFO L225 Difference]: With dead ends: 4213 [2024-11-22 12:03:34,202 INFO L226 Difference]: Without dead ends: 2259 [2024-11-22 12:03:34,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2024-11-22 12:03:34,205 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 807 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:34,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1668 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:03:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2024-11-22 12:03:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2227. [2024-11-22 12:03:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1940 states have (on average 1.4907216494845361) internal successors, (2892), 1943 states have internal predecessors, (2892), 238 states have call successors, (238), 48 states have call predecessors, (238), 48 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-22 12:03:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3368 transitions. [2024-11-22 12:03:34,342 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3368 transitions. Word has length 577 [2024-11-22 12:03:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:34,343 INFO L471 AbstractCegarLoop]: Abstraction has 2227 states and 3368 transitions. [2024-11-22 12:03:34,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 6 states have call successors, (121), 3 states have call predecessors, (121), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2024-11-22 12:03:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3368 transitions. [2024-11-22 12:03:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 12:03:34,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:34,346 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:34,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 12:03:34,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:34,547 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:34,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1295953727, now seen corresponding path program 1 times [2024-11-22 12:03:34,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:34,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542530385] [2024-11-22 12:03:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:34,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 204 proven. 54 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:35,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:35,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542530385] [2024-11-22 12:03:35,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542530385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:35,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196463796] [2024-11-22 12:03:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:35,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:35,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:35,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 12:03:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:36,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 12:03:36,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 5118 proven. 54 refuted. 0 times theorem prover too weak. 9792 trivial. 0 not checked. [2024-11-22 12:03:36,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 204 proven. 54 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196463796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:36,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 12:03:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065118834] [2024-11-22 12:03:36,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:36,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 12:03:36,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 12:03:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-22 12:03:36,581 INFO L87 Difference]: Start difference. First operand 2227 states and 3368 transitions. Second operand has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2024-11-22 12:03:37,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:37,492 INFO L93 Difference]: Finished difference Result 3837 states and 5734 transitions. [2024-11-22 12:03:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 12:03:37,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 577 [2024-11-22 12:03:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:37,502 INFO L225 Difference]: With dead ends: 3837 [2024-11-22 12:03:37,502 INFO L226 Difference]: Without dead ends: 2459 [2024-11-22 12:03:37,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1148 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2024-11-22 12:03:37,504 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 1304 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:37,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 2024 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 12:03:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2024-11-22 12:03:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2235. [2024-11-22 12:03:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1946 states have (on average 1.487153134635149) internal successors, (2894), 1949 states have internal predecessors, (2894), 238 states have call successors, (238), 50 states have call predecessors, (238), 50 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-22 12:03:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3370 transitions. [2024-11-22 12:03:37,651 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3370 transitions. Word has length 577 [2024-11-22 12:03:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:37,651 INFO L471 AbstractCegarLoop]: Abstraction has 2235 states and 3370 transitions. [2024-11-22 12:03:37,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2024-11-22 12:03:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3370 transitions. [2024-11-22 12:03:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 12:03:37,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:37,655 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:03:37,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 12:03:37,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 12:03:37,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:37,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash -390226111, now seen corresponding path program 1 times [2024-11-22 12:03:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891047483] [2024-11-22 12:03:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:37,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 243 proven. 15 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891047483] [2024-11-22 12:03:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891047483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397035166] [2024-11-22 12:03:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:39,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:03:39,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 12:03:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:39,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 12:03:39,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 1875 proven. 24 refuted. 0 times theorem prover too weak. 13065 trivial. 0 not checked. [2024-11-22 12:03:40,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:03:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 243 proven. 15 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2024-11-22 12:03:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397035166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:03:40,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:03:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 15 [2024-11-22 12:03:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774599348] [2024-11-22 12:03:40,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:03:40,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 12:03:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:40,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 12:03:40,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-22 12:03:40,446 INFO L87 Difference]: Start difference. First operand 2235 states and 3370 transitions. Second operand has 15 states, 15 states have (on average 17.266666666666666) internal successors, (259), 15 states have internal predecessors, (259), 4 states have call successors, (97), 3 states have call predecessors, (97), 5 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98)