./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.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-79.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 72bf3c0845cdd2bb0ceb7773d767081845ae984de3bbd8e14ca740b1ff59160d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:05:17,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:05:17,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:05:17,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:05:17,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:05:17,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:05:17,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:05:17,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:05:17,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:05:17,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:05:17,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:05:17,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:05:17,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:05:17,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:05:17,367 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:05:17,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:05:17,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:05:17,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:05:17,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:05:17,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:05:17,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:05:17,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:05:17,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:05:17,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:05:17,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:05:17,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:05:17,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:05:17,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:05:17,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:05:17,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:05:17,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:05:17,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bf3c0845cdd2bb0ceb7773d767081845ae984de3bbd8e14ca740b1ff59160d [2024-11-22 12:05:17,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:05:17,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:05:17,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:05:17,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:05:17,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:05:17,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2024-11-22 12:05:18,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:05:19,032 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:05:19,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2024-11-22 12:05:19,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb785a80e/d1e80fbfa0ed433988580dbd1c73b67f/FLAGc9b6afcd5 [2024-11-22 12:05:19,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb785a80e/d1e80fbfa0ed433988580dbd1c73b67f [2024-11-22 12:05:19,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:05:19,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:05:19,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:05:19,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:05:19,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:05:19,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18093d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19, skipping insertion in model container [2024-11-22 12:05:19,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:05:19,259 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-79.i[916,929] [2024-11-22 12:05:19,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:05:19,430 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:05:19,442 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-79.i[916,929] [2024-11-22 12:05:19,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:05:19,527 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:05:19,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19 WrapperNode [2024-11-22 12:05:19,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:05:19,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:05:19,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:05:19,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:05:19,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,679 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 754 [2024-11-22 12:05:19,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:05:19,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:05:19,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:05:19,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:05:19,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,745 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 12:05:19,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:05:19,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:05:19,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:05:19,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:05:19,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (1/1) ... [2024-11-22 12:05:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:05:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:19,844 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 12:05:19,846 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 12:05:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:05:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:05:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:05:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:05:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:05:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:05:19,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:05:19,980 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:05:20,962 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-22 12:05:20,962 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:05:20,981 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:05:20,983 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:05:20,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:05:20 BoogieIcfgContainer [2024-11-22 12:05:20,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:05:20,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:05:20,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:05:20,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:05:20,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:05:19" (1/3) ... [2024-11-22 12:05:20,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@879cf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:05:20, skipping insertion in model container [2024-11-22 12:05:20,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:19" (2/3) ... [2024-11-22 12:05:20,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@879cf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:05:20, skipping insertion in model container [2024-11-22 12:05:20,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:05:20" (3/3) ... [2024-11-22 12:05:20,992 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-79.i [2024-11-22 12:05:21,005 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:05:21,006 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:05:21,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:05:21,074 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;@799a1c08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:05:21,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:05:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 238 states have (on average 1.5672268907563025) internal successors, (373), 239 states have internal predecessors, (373), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 12:05:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-22 12:05:21,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:21,106 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:21,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:21,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash -586400521, now seen corresponding path program 1 times [2024-11-22 12:05:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628784370] [2024-11-22 12:05:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-22 12:05:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628784370] [2024-11-22 12:05:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628784370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77914163] [2024-11-22 12:05:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:21,682 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 12:05:21,683 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 12:05:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:22,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:05:22,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-22 12:05:22,066 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:05:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77914163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:22,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:05:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:05:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416404694] [2024-11-22 12:05:22,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:22,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:05:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:05:22,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:05:22,100 INFO L87 Difference]: Start difference. First operand has 303 states, 238 states have (on average 1.5672268907563025) internal successors, (373), 239 states have internal predecessors, (373), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 12:05:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:22,146 INFO L93 Difference]: Finished difference Result 595 states and 1044 transitions. [2024-11-22 12:05:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:05:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 437 [2024-11-22 12:05:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:22,156 INFO L225 Difference]: With dead ends: 595 [2024-11-22 12:05:22,156 INFO L226 Difference]: Without dead ends: 295 [2024-11-22 12:05:22,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 438 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 12:05:22,162 INFO L432 NwaCegarLoop]: 483 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, 483 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 12:05:22,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:05:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-22 12:05:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2024-11-22 12:05:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 231 states have (on average 1.5541125541125542) internal successors, (359), 231 states have internal predecessors, (359), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 12:05:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 483 transitions. [2024-11-22 12:05:22,228 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 483 transitions. Word has length 437 [2024-11-22 12:05:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:22,231 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 483 transitions. [2024-11-22 12:05:22,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 12:05:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 483 transitions. [2024-11-22 12:05:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-22 12:05:22,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:22,243 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:22,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 12:05:22,444 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 12:05:22,446 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:22,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -920327421, now seen corresponding path program 1 times [2024-11-22 12:05:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351004686] [2024-11-22 12:05:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351004686] [2024-11-22 12:05:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351004686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:22,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:22,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:05:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816260978] [2024-11-22 12:05:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:22,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:05:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:05:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:05:22,978 INFO L87 Difference]: Start difference. First operand 295 states and 483 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:23,405 INFO L93 Difference]: Finished difference Result 1033 states and 1691 transitions. [2024-11-22 12:05:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:05:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 437 [2024-11-22 12:05:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:23,414 INFO L225 Difference]: With dead ends: 1033 [2024-11-22 12:05:23,416 INFO L226 Difference]: Without dead ends: 741 [2024-11-22 12:05:23,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:05:23,418 INFO L432 NwaCegarLoop]: 785 mSDtfsCounter, 720 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:23,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1520 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:05:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-22 12:05:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 736. [2024-11-22 12:05:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 602 states have (on average 1.5365448504983388) internal successors, (925), 603 states have internal predecessors, (925), 130 states have call successors, (130), 3 states have call predecessors, (130), 3 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 12:05:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1185 transitions. [2024-11-22 12:05:23,492 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1185 transitions. Word has length 437 [2024-11-22 12:05:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:23,495 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1185 transitions. [2024-11-22 12:05:23,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1185 transitions. [2024-11-22 12:05:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-22 12:05:23,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:23,503 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:23,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:05:23,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:23,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1744543739, now seen corresponding path program 1 times [2024-11-22 12:05:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845648851] [2024-11-22 12:05:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:23,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845648851] [2024-11-22 12:05:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845648851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:05:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218018342] [2024-11-22 12:05:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:23,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:05:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:05:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:23,819 INFO L87 Difference]: Start difference. First operand 736 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:23,892 INFO L93 Difference]: Finished difference Result 1796 states and 2891 transitions. [2024-11-22 12:05:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:05:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 437 [2024-11-22 12:05:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:23,902 INFO L225 Difference]: With dead ends: 1796 [2024-11-22 12:05:23,902 INFO L226 Difference]: Without dead ends: 1063 [2024-11-22 12:05:23,904 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 12:05:23,905 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 254 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:23,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 963 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:05:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-22 12:05:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 922. [2024-11-22 12:05:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 781 states have (on average 1.558258642765685) internal successors, (1217), 783 states have internal predecessors, (1217), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-22 12:05:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1489 transitions. [2024-11-22 12:05:23,959 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1489 transitions. Word has length 437 [2024-11-22 12:05:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:23,961 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1489 transitions. [2024-11-22 12:05:23,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1489 transitions. [2024-11-22 12:05:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-22 12:05:23,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:23,968 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:23,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:05:23,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:23,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -52655704, now seen corresponding path program 1 times [2024-11-22 12:05:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275918361] [2024-11-22 12:05:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275918361] [2024-11-22 12:05:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275918361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:24,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:24,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:05:24,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764398437] [2024-11-22 12:05:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:24,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:05:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:05:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:24,220 INFO L87 Difference]: Start difference. First operand 922 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:24,301 INFO L93 Difference]: Finished difference Result 1994 states and 3225 transitions. [2024-11-22 12:05:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:05:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 438 [2024-11-22 12:05:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:24,311 INFO L225 Difference]: With dead ends: 1994 [2024-11-22 12:05:24,311 INFO L226 Difference]: Without dead ends: 1075 [2024-11-22 12:05:24,313 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 12:05:24,316 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 425 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:24,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 874 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:05:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2024-11-22 12:05:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 906. [2024-11-22 12:05:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 765 states have (on average 1.4980392156862745) internal successors, (1146), 767 states have internal predecessors, (1146), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-22 12:05:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1418 transitions. [2024-11-22 12:05:24,400 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1418 transitions. Word has length 438 [2024-11-22 12:05:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:24,401 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1418 transitions. [2024-11-22 12:05:24,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1418 transitions. [2024-11-22 12:05:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-22 12:05:24,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:24,409 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:24,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:05:24,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:24,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1387999939, now seen corresponding path program 1 times [2024-11-22 12:05:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271115846] [2024-11-22 12:05:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271115846] [2024-11-22 12:05:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271115846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:25,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639738588] [2024-11-22 12:05:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:25,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:25,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:25,030 INFO L87 Difference]: Start difference. First operand 906 states and 1418 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:25,423 INFO L93 Difference]: Finished difference Result 1839 states and 2883 transitions. [2024-11-22 12:05:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 439 [2024-11-22 12:05:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:25,428 INFO L225 Difference]: With dead ends: 1839 [2024-11-22 12:05:25,429 INFO L226 Difference]: Without dead ends: 936 [2024-11-22 12:05:25,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:05:25,431 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 550 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:25,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2100 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:05:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-22 12:05:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 887. [2024-11-22 12:05:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 746 states have (on average 1.467828418230563) internal successors, (1095), 748 states have internal predecessors, (1095), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-22 12:05:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1367 transitions. [2024-11-22 12:05:25,498 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1367 transitions. Word has length 439 [2024-11-22 12:05:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:25,499 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1367 transitions. [2024-11-22 12:05:25,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1367 transitions. [2024-11-22 12:05:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-22 12:05:25,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:25,505 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:25,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:05:25,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:25,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -334766766, now seen corresponding path program 1 times [2024-11-22 12:05:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241903828] [2024-11-22 12:05:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241903828] [2024-11-22 12:05:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241903828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:26,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:05:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077372703] [2024-11-22 12:05:26,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:26,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:05:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:05:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:05:26,650 INFO L87 Difference]: Start difference. First operand 887 states and 1367 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:27,021 INFO L93 Difference]: Finished difference Result 2521 states and 3889 transitions. [2024-11-22 12:05:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:05:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 440 [2024-11-22 12:05:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:27,028 INFO L225 Difference]: With dead ends: 2521 [2024-11-22 12:05:27,028 INFO L226 Difference]: Without dead ends: 1637 [2024-11-22 12:05:27,030 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 12:05:27,031 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 376 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:27,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1324 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:05:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2024-11-22 12:05:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1583. [2024-11-22 12:05:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1379 states have (on average 1.495286439448876) internal successors, (2062), 1381 states have internal predecessors, (2062), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2024-11-22 12:05:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2458 transitions. [2024-11-22 12:05:27,113 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2458 transitions. Word has length 440 [2024-11-22 12:05:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:27,115 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2458 transitions. [2024-11-22 12:05:27,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2458 transitions. [2024-11-22 12:05:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-22 12:05:27,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:27,119 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:27,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:05:27,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:27,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash 899239339, now seen corresponding path program 1 times [2024-11-22 12:05:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944482534] [2024-11-22 12:05:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:27,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944482534] [2024-11-22 12:05:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944482534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:27,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612553846] [2024-11-22 12:05:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:27,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:27,988 INFO L87 Difference]: Start difference. First operand 1583 states and 2458 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:28,275 INFO L93 Difference]: Finished difference Result 3082 states and 4758 transitions. [2024-11-22 12:05:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 441 [2024-11-22 12:05:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:28,282 INFO L225 Difference]: With dead ends: 3082 [2024-11-22 12:05:28,282 INFO L226 Difference]: Without dead ends: 1637 [2024-11-22 12:05:28,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:05:28,285 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 375 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:28,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1813 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:05:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2024-11-22 12:05:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1583. [2024-11-22 12:05:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1379 states have (on average 1.4880348078317622) internal successors, (2052), 1381 states have internal predecessors, (2052), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2024-11-22 12:05:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2448 transitions. [2024-11-22 12:05:28,397 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2448 transitions. Word has length 441 [2024-11-22 12:05:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:28,397 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2448 transitions. [2024-11-22 12:05:28,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2448 transitions. [2024-11-22 12:05:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-22 12:05:28,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:28,400 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:28,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:05:28,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:28,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash -678641456, now seen corresponding path program 1 times [2024-11-22 12:05:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:28,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304091548] [2024-11-22 12:05:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304091548] [2024-11-22 12:05:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304091548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:28,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449657053] [2024-11-22 12:05:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:28,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:28,739 INFO L87 Difference]: Start difference. First operand 1583 states and 2448 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:29,014 INFO L93 Difference]: Finished difference Result 3070 states and 4728 transitions. [2024-11-22 12:05:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 443 [2024-11-22 12:05:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:29,021 INFO L225 Difference]: With dead ends: 3070 [2024-11-22 12:05:29,021 INFO L226 Difference]: Without dead ends: 1623 [2024-11-22 12:05:29,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:05:29,024 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 385 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:29,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1830 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:05:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2024-11-22 12:05:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1577. [2024-11-22 12:05:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1373 states have (on average 1.484340859431901) internal successors, (2038), 1375 states have internal predecessors, (2038), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2024-11-22 12:05:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2434 transitions. [2024-11-22 12:05:29,122 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2434 transitions. Word has length 443 [2024-11-22 12:05:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:29,122 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 2434 transitions. [2024-11-22 12:05:29,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2434 transitions. [2024-11-22 12:05:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-22 12:05:29,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:29,125 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:29,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:05:29,125 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:29,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1752861218, now seen corresponding path program 1 times [2024-11-22 12:05:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536702508] [2024-11-22 12:05:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:29,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2024-11-22 12:05:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536702508] [2024-11-22 12:05:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536702508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049858705] [2024-11-22 12:05:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:32,603 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 12:05:32,605 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 12:05:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:32,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 12:05:32,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 2437 proven. 147 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2024-11-22 12:05:33,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:05:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2024-11-22 12:05:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049858705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:05:34,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:05:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2024-11-22 12:05:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861267030] [2024-11-22 12:05:34,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:05:34,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 12:05:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 12:05:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:05:34,237 INFO L87 Difference]: Start difference. First operand 1577 states and 2434 transitions. Second operand has 17 states, 17 states have (on average 16.823529411764707) internal successors, (286), 17 states have internal predecessors, (286), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2024-11-22 12:05:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:35,831 INFO L93 Difference]: Finished difference Result 4070 states and 6231 transitions. [2024-11-22 12:05:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 12:05:35,832 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.823529411764707) internal successors, (286), 17 states have internal predecessors, (286), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) Word has length 443 [2024-11-22 12:05:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:35,842 INFO L225 Difference]: With dead ends: 4070 [2024-11-22 12:05:35,842 INFO L226 Difference]: Without dead ends: 2637 [2024-11-22 12:05:35,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=956, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 12:05:35,845 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 2731 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:35,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 3555 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 12:05:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2024-11-22 12:05:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2132. [2024-11-22 12:05:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1852 states have (on average 1.4659827213822894) internal successors, (2715), 1855 states have internal predecessors, (2715), 266 states have call successors, (266), 13 states have call predecessors, (266), 13 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-22 12:05:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3247 transitions. [2024-11-22 12:05:35,966 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3247 transitions. Word has length 443 [2024-11-22 12:05:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:35,967 INFO L471 AbstractCegarLoop]: Abstraction has 2132 states and 3247 transitions. [2024-11-22 12:05:35,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.823529411764707) internal successors, (286), 17 states have internal predecessors, (286), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2024-11-22 12:05:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3247 transitions. [2024-11-22 12:05:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-22 12:05:35,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:35,970 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:35,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 12:05:36,174 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,SelfDestructingSolverStorable8 [2024-11-22 12:05:36,175 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash 817060509, now seen corresponding path program 1 times [2024-11-22 12:05:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202495519] [2024-11-22 12:05:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2024-11-22 12:05:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202495519] [2024-11-22 12:05:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202495519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023341208] [2024-11-22 12:05:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:37,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:37,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:37,686 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 12:05:37,687 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 12:05:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:37,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 12:05:37,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 2283 proven. 150 refuted. 0 times theorem prover too weak. 5131 trivial. 0 not checked. [2024-11-22 12:05:38,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:05:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2024-11-22 12:05:38,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023341208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:05:38,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:05:38,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 12:05:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388815492] [2024-11-22 12:05:38,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:05:38,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 12:05:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 12:05:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:05:38,772 INFO L87 Difference]: Start difference. First operand 2132 states and 3247 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2024-11-22 12:05:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:39,155 INFO L93 Difference]: Finished difference Result 4118 states and 6251 transitions. [2024-11-22 12:05:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 12:05:39,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 445 [2024-11-22 12:05:39,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:39,165 INFO L225 Difference]: With dead ends: 4118 [2024-11-22 12:05:39,165 INFO L226 Difference]: Without dead ends: 2168 [2024-11-22 12:05:39,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 887 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 12:05:39,168 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 853 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:39,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1030 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:05:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2024-11-22 12:05:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2138. [2024-11-22 12:05:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1854 states have (on average 1.4492988133764833) internal successors, (2687), 1857 states have internal predecessors, (2687), 266 states have call successors, (266), 17 states have call predecessors, (266), 17 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-22 12:05:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3219 transitions. [2024-11-22 12:05:39,286 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3219 transitions. Word has length 445 [2024-11-22 12:05:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:39,287 INFO L471 AbstractCegarLoop]: Abstraction has 2138 states and 3219 transitions. [2024-11-22 12:05:39,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2024-11-22 12:05:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3219 transitions. [2024-11-22 12:05:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-22 12:05:39,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:39,289 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:39,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 12:05:39,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:39,494 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:39,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2140088739, now seen corresponding path program 1 times [2024-11-22 12:05:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235305666] [2024-11-22 12:05:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:05:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235305666] [2024-11-22 12:05:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235305666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:40,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:40,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:05:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309304902] [2024-11-22 12:05:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:40,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:05:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:05:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:05:40,582 INFO L87 Difference]: Start difference. First operand 2138 states and 3219 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:40,928 INFO L93 Difference]: Finished difference Result 3717 states and 5601 transitions. [2024-11-22 12:05:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:05:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2024-11-22 12:05:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:40,938 INFO L225 Difference]: With dead ends: 3717 [2024-11-22 12:05:40,938 INFO L226 Difference]: Without dead ends: 2552 [2024-11-22 12:05:40,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:05:40,942 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 870 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:40,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1649 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:05:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2024-11-22 12:05:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2291. [2024-11-22 12:05:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2007 states have (on average 1.460388639760837) internal successors, (2931), 2010 states have internal predecessors, (2931), 266 states have call successors, (266), 17 states have call predecessors, (266), 17 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-22 12:05:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3463 transitions. [2024-11-22 12:05:41,068 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3463 transitions. Word has length 445 [2024-11-22 12:05:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:41,069 INFO L471 AbstractCegarLoop]: Abstraction has 2291 states and 3463 transitions. [2024-11-22 12:05:41,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:05:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3463 transitions. [2024-11-22 12:05:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-22 12:05:41,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:41,072 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:41,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 12:05:41,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:41,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:41,073 INFO L85 PathProgramCache]: Analyzing trace with hash 535903643, now seen corresponding path program 1 times [2024-11-22 12:05:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:41,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74974877] [2024-11-22 12:05:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 48 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2024-11-22 12:05:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74974877] [2024-11-22 12:05:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74974877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719065165] [2024-11-22 12:05:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:43,417 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 12:05:43,417 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 12:05:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:43,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 12:05:43,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3524 proven. 120 refuted. 0 times theorem prover too weak. 3920 trivial. 0 not checked. [2024-11-22 12:05:44,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:05:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 240 proven. 123 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2024-11-22 12:05:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719065165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:05:45,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:05:45,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 22 [2024-11-22 12:05:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129519213] [2024-11-22 12:05:45,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:05:45,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 12:05:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 12:05:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-22 12:05:45,370 INFO L87 Difference]: Start difference. First operand 2291 states and 3463 transitions. Second operand has 22 states, 21 states have (on average 17.38095238095238) internal successors, (365), 20 states have internal predecessors, (365), 8 states have call successors, (186), 4 states have call predecessors, (186), 8 states have return successors, (186), 8 states have call predecessors, (186), 8 states have call successors, (186) [2024-11-22 12:05:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:47,402 INFO L93 Difference]: Finished difference Result 7869 states and 11764 transitions. [2024-11-22 12:05:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 12:05:47,403 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 17.38095238095238) internal successors, (365), 20 states have internal predecessors, (365), 8 states have call successors, (186), 4 states have call predecessors, (186), 8 states have return successors, (186), 8 states have call predecessors, (186), 8 states have call successors, (186) Word has length 445 [2024-11-22 12:05:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:47,422 INFO L225 Difference]: With dead ends: 7869 [2024-11-22 12:05:47,422 INFO L226 Difference]: Without dead ends: 5799 [2024-11-22 12:05:47,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2024-11-22 12:05:47,429 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 2074 mSDsluCounter, 4378 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:47,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 5003 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 12:05:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2024-11-22 12:05:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5708. [2024-11-22 12:05:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5031 states have (on average 1.4464321208507256) internal successors, (7277), 5043 states have internal predecessors, (7277), 608 states have call successors, (608), 68 states have call predecessors, (608), 68 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2024-11-22 12:05:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 8493 transitions. [2024-11-22 12:05:47,683 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 8493 transitions. Word has length 445 [2024-11-22 12:05:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:47,684 INFO L471 AbstractCegarLoop]: Abstraction has 5708 states and 8493 transitions. [2024-11-22 12:05:47,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 17.38095238095238) internal successors, (365), 20 states have internal predecessors, (365), 8 states have call successors, (186), 4 states have call predecessors, (186), 8 states have return successors, (186), 8 states have call predecessors, (186), 8 states have call successors, (186) [2024-11-22 12:05:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 8493 transitions. [2024-11-22 12:05:47,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-22 12:05:47,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:47,688 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:47,699 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 12:05:47,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:47,889 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:47,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1542018625, now seen corresponding path program 1 times [2024-11-22 12:05:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494056178] [2024-11-22 12:05:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 180 proven. 351 refuted. 0 times theorem prover too weak. 7033 trivial. 0 not checked. [2024-11-22 12:05:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494056178] [2024-11-22 12:05:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494056178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:50,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419017832] [2024-11-22 12:05:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:50,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:50,738 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 12:05:50,739 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 12:05:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:51,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 12:05:51,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3471 proven. 672 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2024-11-22 12:05:53,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:05:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 192 proven. 522 refuted. 0 times theorem prover too weak. 6850 trivial. 0 not checked. [2024-11-22 12:05:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419017832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:05:55,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:05:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22, 19] total 43 [2024-11-22 12:05:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690787500] [2024-11-22 12:05:55,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:05:55,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-22 12:05:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:55,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-22 12:05:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 12:05:55,139 INFO L87 Difference]: Start difference. First operand 5708 states and 8493 transitions. Second operand has 43 states, 39 states have (on average 9.025641025641026) internal successors, (352), 38 states have internal predecessors, (352), 15 states have call successors, (169), 7 states have call predecessors, (169), 13 states have return successors, (171), 13 states have call predecessors, (171), 15 states have call successors, (171) [2024-11-22 12:06:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:14,066 INFO L93 Difference]: Finished difference Result 33321 states and 48366 transitions. [2024-11-22 12:06:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-22 12:06:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 9.025641025641026) internal successors, (352), 38 states have internal predecessors, (352), 15 states have call successors, (169), 7 states have call predecessors, (169), 13 states have return successors, (171), 13 states have call predecessors, (171), 15 states have call successors, (171) Word has length 446 [2024-11-22 12:06:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:14,140 INFO L225 Difference]: With dead ends: 33321 [2024-11-22 12:06:14,140 INFO L226 Difference]: Without dead ends: 28082 [2024-11-22 12:06:14,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11654 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=5979, Invalid=26963, Unknown=0, NotChecked=0, Total=32942 [2024-11-22 12:06:14,157 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 8501 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 2559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8501 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2559 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:14,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8501 Valid, 2981 Invalid, 5828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2559 Valid, 3268 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2024-11-22 12:06:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28082 states. [2024-11-22 12:06:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28082 to 11058. [2024-11-22 12:06:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11058 states, 10302 states have (on average 1.4594253543001359) internal successors, (15035), 10314 states have internal predecessors, (15035), 608 states have call successors, (608), 147 states have call predecessors, (608), 147 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2024-11-22 12:06:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11058 states to 11058 states and 16251 transitions. [2024-11-22 12:06:14,832 INFO L78 Accepts]: Start accepts. Automaton has 11058 states and 16251 transitions. Word has length 446 [2024-11-22 12:06:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:14,833 INFO L471 AbstractCegarLoop]: Abstraction has 11058 states and 16251 transitions. [2024-11-22 12:06:14,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 9.025641025641026) internal successors, (352), 38 states have internal predecessors, (352), 15 states have call successors, (169), 7 states have call predecessors, (169), 13 states have return successors, (171), 13 states have call predecessors, (171), 15 states have call successors, (171) [2024-11-22 12:06:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 11058 states and 16251 transitions. [2024-11-22 12:06:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-22 12:06:14,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:14,838 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:14,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 12:06:15,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 12:06:15,039 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:15,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2095995017, now seen corresponding path program 1 times [2024-11-22 12:06:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809315722] [2024-11-22 12:06:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 12:06:18,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238937305] [2024-11-22 12:06:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:18,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:18,657 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 12:06:18,658 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 12:06:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:18,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 12:06:18,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:06:18,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:06:18,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:18,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809315722] [2024-11-22 12:06:18,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 12:06:18,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238937305] [2024-11-22 12:06:18,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238937305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:18,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:18,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 12:06:18,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709271569] [2024-11-22 12:06:18,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:18,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 12:06:18,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 12:06:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:06:18,972 INFO L87 Difference]: Start difference. First operand 11058 states and 16251 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:21,183 INFO L93 Difference]: Finished difference Result 36099 states and 53107 transitions. [2024-11-22 12:06:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 12:06:21,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2024-11-22 12:06:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:21,236 INFO L225 Difference]: With dead ends: 36099 [2024-11-22 12:06:21,237 INFO L226 Difference]: Without dead ends: 25854 [2024-11-22 12:06:21,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 12:06:21,255 INFO L432 NwaCegarLoop]: 1010 mSDtfsCounter, 1424 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:21,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 2978 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 12:06:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25854 states. [2024-11-22 12:06:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25854 to 15322. [2024-11-22 12:06:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15322 states, 14566 states have (on average 1.4689688315254703) internal successors, (21397), 14578 states have internal predecessors, (21397), 608 states have call successors, (608), 147 states have call predecessors, (608), 147 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2024-11-22 12:06:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 22613 transitions. [2024-11-22 12:06:22,015 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 22613 transitions. Word has length 448 [2024-11-22 12:06:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:22,016 INFO L471 AbstractCegarLoop]: Abstraction has 15322 states and 22613 transitions. [2024-11-22 12:06:22,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 22613 transitions. [2024-11-22 12:06:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-22 12:06:22,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:22,022 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:22,032 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 12:06:22,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:22,223 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:22,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash -635988000, now seen corresponding path program 1 times [2024-11-22 12:06:22,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:22,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946022077] [2024-11-22 12:06:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:22,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 12:06:23,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910154233] [2024-11-22 12:06:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:23,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:23,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:23,828 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 12:06:23,829 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 12:06:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:24,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 12:06:24,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:06:24,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:06:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946022077] [2024-11-22 12:06:24,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 12:06:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910154233] [2024-11-22 12:06:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910154233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:06:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864653853] [2024-11-22 12:06:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:24,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:06:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:06:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:06:24,142 INFO L87 Difference]: Start difference. First operand 15322 states and 22613 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:25,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:25,711 INFO L93 Difference]: Finished difference Result 31646 states and 46148 transitions. [2024-11-22 12:06:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:06:25,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2024-11-22 12:06:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:25,746 INFO L225 Difference]: With dead ends: 31646 [2024-11-22 12:06:25,746 INFO L226 Difference]: Without dead ends: 19481 [2024-11-22 12:06:25,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:06:25,760 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 861 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:25,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2016 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:06:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19481 states. [2024-11-22 12:06:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19481 to 15034. [2024-11-22 12:06:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15034 states, 14278 states have (on average 1.4694635102955595) internal successors, (20981), 14290 states have internal predecessors, (20981), 608 states have call successors, (608), 147 states have call predecessors, (608), 147 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2024-11-22 12:06:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15034 states to 15034 states and 22197 transitions. [2024-11-22 12:06:26,508 INFO L78 Accepts]: Start accepts. Automaton has 15034 states and 22197 transitions. Word has length 448 [2024-11-22 12:06:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:26,508 INFO L471 AbstractCegarLoop]: Abstraction has 15034 states and 22197 transitions. [2024-11-22 12:06:26,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15034 states and 22197 transitions. [2024-11-22 12:06:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-22 12:06:26,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:26,514 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:26,523 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 12:06:26,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:26,715 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:26,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1941506554, now seen corresponding path program 1 times [2024-11-22 12:06:26,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570414762] [2024-11-22 12:06:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:26,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 12:06:27,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570414762] [2024-11-22 12:06:27,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570414762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:27,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:27,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:06:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739086402] [2024-11-22 12:06:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:27,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:06:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:06:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:27,043 INFO L87 Difference]: Start difference. First operand 15034 states and 22197 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:27,603 INFO L93 Difference]: Finished difference Result 31537 states and 46938 transitions. [2024-11-22 12:06:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:06:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 449 [2024-11-22 12:06:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:27,633 INFO L225 Difference]: With dead ends: 31537 [2024-11-22 12:06:27,633 INFO L226 Difference]: Without dead ends: 18326 [2024-11-22 12:06:27,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:27,652 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 84 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:27,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1805 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:06:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2024-11-22 12:06:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 15802. [2024-11-22 12:06:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15802 states, 15046 states have (on average 1.4625149541406355) internal successors, (22005), 15058 states have internal predecessors, (22005), 608 states have call successors, (608), 147 states have call predecessors, (608), 147 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2024-11-22 12:06:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15802 states to 15802 states and 23221 transitions. [2024-11-22 12:06:28,272 INFO L78 Accepts]: Start accepts. Automaton has 15802 states and 23221 transitions. Word has length 449 [2024-11-22 12:06:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:28,272 INFO L471 AbstractCegarLoop]: Abstraction has 15802 states and 23221 transitions. [2024-11-22 12:06:28,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 12:06:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15802 states and 23221 transitions. [2024-11-22 12:06:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-22 12:06:28,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:28,281 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:28,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 12:06:28,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:28,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash 873438991, now seen corresponding path program 1 times [2024-11-22 12:06:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475455293] [2024-11-22 12:06:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 234 proven. 297 refuted. 0 times theorem prover too weak. 7033 trivial. 0 not checked. [2024-11-22 12:06:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475455293] [2024-11-22 12:06:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475455293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:06:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179055426] [2024-11-22 12:06:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:31,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:31,172 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 12:06:31,173 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 12:06:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:31,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 12:06:31,482 INFO L278 TraceCheckSpWp]: Computing forward predicates...