./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.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-1.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 ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:58:18,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:58:18,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:58:18,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:58:18,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:58:18,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:58:18,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:58:18,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:58:18,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:58:18,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:58:18,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:58:18,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:58:18,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:58:18,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:58:18,442 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:58:18,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:58:18,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:58:18,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:58:18,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:58:18,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:58:18,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:58:18,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:58:18,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:58:18,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:58:18,445 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:58:18,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:58:18,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:58:18,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:58:18,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:58:18,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:58:18,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:58:18,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:58:18,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:58:18,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:58:18,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:58:18,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:58:18,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:58:18,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:58:18,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:58:18,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:58:18,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:58:18,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:58:18,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 [2024-11-22 11:58:18,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:58:18,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:58:18,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:58:18,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:58:18,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:58:18,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2024-11-22 11:58:20,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:58:20,277 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:58:20,278 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2024-11-22 11:58:20,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec88bf84/82fe26809369415e9d47f0da32be49cf/FLAGf405c13ce [2024-11-22 11:58:20,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec88bf84/82fe26809369415e9d47f0da32be49cf [2024-11-22 11:58:20,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:58:20,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:58:20,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:58:20,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:58:20,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:58:20,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:58:20" (1/1) ... [2024-11-22 11:58:20,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41171dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:20, skipping insertion in model container [2024-11-22 11:58:20,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:58:20" (1/1) ... [2024-11-22 11:58:20,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:58:20,822 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-1.i[915,928] [2024-11-22 11:58:21,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:58:21,072 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:58:21,082 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-1.i[915,928] [2024-11-22 11:58:21,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:58:21,211 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:58:21,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21 WrapperNode [2024-11-22 11:58:21,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:58:21,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:58:21,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:58:21,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:58:21,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,360 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 753 [2024-11-22 11:58:21,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:58:21,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:58:21,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:58:21,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:58:21,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,456 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 11:58:21,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:58:21,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:58:21,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:58:21,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:58:21,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (1/1) ... [2024-11-22 11:58:21,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:58:21,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:58:21,570 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 11:58:21,575 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 11:58:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:58:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:58:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:58:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:58:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:58:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:58:21,714 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:58:21,716 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:58:22,846 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2024-11-22 11:58:22,846 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:58:22,872 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:58:22,872 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:58:22,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:58:22 BoogieIcfgContainer [2024-11-22 11:58:22,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:58:22,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:58:22,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:58:22,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:58:22,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:58:20" (1/3) ... [2024-11-22 11:58:22,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15da2d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:58:22, skipping insertion in model container [2024-11-22 11:58:22,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:58:21" (2/3) ... [2024-11-22 11:58:22,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15da2d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:58:22, skipping insertion in model container [2024-11-22 11:58:22,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:58:22" (3/3) ... [2024-11-22 11:58:22,883 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-1.i [2024-11-22 11:58:22,898 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:58:22,898 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:58:22,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:58:22,979 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;@32738bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:58:22,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:58:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 233 states have (on average 1.553648068669528) internal successors, (362), 234 states have internal predecessors, (362), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:58:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-22 11:58:23,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:23,014 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:23,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:23,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1914085921, now seen corresponding path program 1 times [2024-11-22 11:58:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984830773] [2024-11-22 11:58:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-22 11:58:23,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:23,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984830773] [2024-11-22 11:58:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984830773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:58:23,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024873393] [2024-11-22 11:58:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:58:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:58:23,537 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 11:58:23,539 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 11:58:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:23,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:58:23,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:58:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-22 11:58:23,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:58:23,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024873393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:58:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:58:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250613104] [2024-11-22 11:58:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:23,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:58:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:58:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:58:23,951 INFO L87 Difference]: Start difference. First operand has 297 states, 233 states have (on average 1.553648068669528) internal successors, (362), 234 states have internal predecessors, (362), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:58:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:24,000 INFO L93 Difference]: Finished difference Result 584 states and 1017 transitions. [2024-11-22 11:58:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:58:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 436 [2024-11-22 11:58:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:24,011 INFO L225 Difference]: With dead ends: 584 [2024-11-22 11:58:24,011 INFO L226 Difference]: Without dead ends: 290 [2024-11-22 11:58:24,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 437 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 11:58:24,018 INFO L432 NwaCegarLoop]: 469 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, 469 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 11:58:24,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:58:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-22 11:58:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-22 11:58:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 227 states have (on average 1.52863436123348) internal successors, (347), 227 states have internal predecessors, (347), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:58:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 469 transitions. [2024-11-22 11:58:24,083 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 469 transitions. Word has length 436 [2024-11-22 11:58:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:24,084 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 469 transitions. [2024-11-22 11:58:24,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:58:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 469 transitions. [2024-11-22 11:58:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-22 11:58:24,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:24,095 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:24,107 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 11:58:24,300 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 11:58:24,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:24,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1750067161, now seen corresponding path program 1 times [2024-11-22 11:58:24,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:24,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302370675] [2024-11-22 11:58:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302370675] [2024-11-22 11:58:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302370675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:58:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423530573] [2024-11-22 11:58:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:24,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:58:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:58:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:58:24,829 INFO L87 Difference]: Start difference. First operand 290 states and 469 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:24,908 INFO L93 Difference]: Finished difference Result 739 states and 1197 transitions. [2024-11-22 11:58:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:58:24,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-22 11:58:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:24,917 INFO L225 Difference]: With dead ends: 739 [2024-11-22 11:58:24,918 INFO L226 Difference]: Without dead ends: 452 [2024-11-22 11:58:24,920 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 11:58:24,921 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 235 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:24,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1069 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:58:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-22 11:58:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 345. [2024-11-22 11:58:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 282 states have (on average 1.5567375886524824) internal successors, (439), 282 states have internal predecessors, (439), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:58:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 561 transitions. [2024-11-22 11:58:24,958 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 561 transitions. Word has length 436 [2024-11-22 11:58:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:24,962 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 561 transitions. [2024-11-22 11:58:24,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 561 transitions. [2024-11-22 11:58:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-22 11:58:24,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:24,970 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:58:24,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:24,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1577549481, now seen corresponding path program 1 times [2024-11-22 11:58:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775529523] [2024-11-22 11:58:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775529523] [2024-11-22 11:58:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775529523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:58:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18237252] [2024-11-22 11:58:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:25,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:58:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:58:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:58:25,916 INFO L87 Difference]: Start difference. First operand 345 states and 561 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:25,973 INFO L93 Difference]: Finished difference Result 1029 states and 1677 transitions. [2024-11-22 11:58:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:58:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-22 11:58:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:25,982 INFO L225 Difference]: With dead ends: 1029 [2024-11-22 11:58:25,983 INFO L226 Difference]: Without dead ends: 687 [2024-11-22 11:58:25,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 11:58:25,986 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 323 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:25,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 922 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:58:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-22 11:58:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 665. [2024-11-22 11:58:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 540 states have (on average 1.5518518518518518) internal successors, (838), 540 states have internal predecessors, (838), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-22 11:58:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1082 transitions. [2024-11-22 11:58:26,031 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1082 transitions. Word has length 436 [2024-11-22 11:58:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:26,033 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1082 transitions. [2024-11-22 11:58:26,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1082 transitions. [2024-11-22 11:58:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-22 11:58:26,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:26,038 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:26,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:58:26,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:26,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1593068199, now seen corresponding path program 1 times [2024-11-22 11:58:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146765347] [2024-11-22 11:58:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146765347] [2024-11-22 11:58:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146765347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:58:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821819334] [2024-11-22 11:58:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:58:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:58:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:58:27,016 INFO L87 Difference]: Start difference. First operand 665 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:27,222 INFO L93 Difference]: Finished difference Result 2103 states and 3407 transitions. [2024-11-22 11:58:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:58:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-22 11:58:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:27,233 INFO L225 Difference]: With dead ends: 2103 [2024-11-22 11:58:27,234 INFO L226 Difference]: Without dead ends: 1441 [2024-11-22 11:58:27,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:58:27,242 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 660 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:27,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1315 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:58:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2024-11-22 11:58:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1251. [2024-11-22 11:58:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1108 states have (on average 1.5866425992779782) internal successors, (1758), 1110 states have internal predecessors, (1758), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-22 11:58:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 2034 transitions. [2024-11-22 11:58:27,303 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 2034 transitions. Word has length 436 [2024-11-22 11:58:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:27,306 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 2034 transitions. [2024-11-22 11:58:27,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 2034 transitions. [2024-11-22 11:58:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-22 11:58:27,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:27,313 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:27,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:58:27,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:27,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash 330159835, now seen corresponding path program 1 times [2024-11-22 11:58:27,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:27,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827963369] [2024-11-22 11:58:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827963369] [2024-11-22 11:58:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827963369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:58:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337438589] [2024-11-22 11:58:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:28,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:58:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:58:28,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:58:28,582 INFO L87 Difference]: Start difference. First operand 1251 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:28,693 INFO L93 Difference]: Finished difference Result 2999 states and 4860 transitions. [2024-11-22 11:58:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:58:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-22 11:58:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:28,702 INFO L225 Difference]: With dead ends: 2999 [2024-11-22 11:58:28,703 INFO L226 Difference]: Without dead ends: 1751 [2024-11-22 11:58:28,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:58:28,706 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 264 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:28,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1339 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:58:28,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2024-11-22 11:58:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1259. [2024-11-22 11:58:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1116 states have (on average 1.586021505376344) internal successors, (1770), 1118 states have internal predecessors, (1770), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-22 11:58:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2046 transitions. [2024-11-22 11:58:28,763 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2046 transitions. Word has length 436 [2024-11-22 11:58:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:28,764 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 2046 transitions. [2024-11-22 11:58:28,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2046 transitions. [2024-11-22 11:58:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-22 11:58:28,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:28,771 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:28,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:58:28,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:28,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2009811705, now seen corresponding path program 1 times [2024-11-22 11:58:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115906679] [2024-11-22 11:58:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:30,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115906679] [2024-11-22 11:58:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115906679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:30,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:30,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:58:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708305537] [2024-11-22 11:58:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:30,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:58:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:58:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:58:30,276 INFO L87 Difference]: Start difference. First operand 1259 states and 2046 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:30,872 INFO L93 Difference]: Finished difference Result 3804 states and 6171 transitions. [2024-11-22 11:58:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:58:30,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 437 [2024-11-22 11:58:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:30,884 INFO L225 Difference]: With dead ends: 3804 [2024-11-22 11:58:30,884 INFO L226 Difference]: Without dead ends: 2548 [2024-11-22 11:58:30,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:58:30,889 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 635 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:30,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1831 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:58:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2024-11-22 11:58:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2545. [2024-11-22 11:58:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2246 states have (on average 1.577025823686554) internal successors, (3542), 2251 states have internal predecessors, (3542), 286 states have call successors, (286), 12 states have call predecessors, (286), 12 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) [2024-11-22 11:58:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4114 transitions. [2024-11-22 11:58:31,037 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4114 transitions. Word has length 437 [2024-11-22 11:58:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:31,041 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4114 transitions. [2024-11-22 11:58:31,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4114 transitions. [2024-11-22 11:58:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-22 11:58:31,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:31,047 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:31,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:58:31,048 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:31,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -406024645, now seen corresponding path program 1 times [2024-11-22 11:58:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471598696] [2024-11-22 11:58:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471598696] [2024-11-22 11:58:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471598696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:32,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:58:32,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502769097] [2024-11-22 11:58:32,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:32,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:58:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:58:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:58:32,097 INFO L87 Difference]: Start difference. First operand 2545 states and 4114 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:32,530 INFO L93 Difference]: Finished difference Result 7333 states and 11833 transitions. [2024-11-22 11:58:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:58:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 437 [2024-11-22 11:58:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:32,553 INFO L225 Difference]: With dead ends: 7333 [2024-11-22 11:58:32,554 INFO L226 Difference]: Without dead ends: 6077 [2024-11-22 11:58:32,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 11:58:32,558 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 645 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:32,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 2144 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:58:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2024-11-22 11:58:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5065. [2024-11-22 11:58:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 4480 states have (on average 1.5785714285714285) internal successors, (7072), 4489 states have internal predecessors, (7072), 562 states have call successors, (562), 22 states have call predecessors, (562), 22 states have return successors, (562), 553 states have call predecessors, (562), 562 states have call successors, (562) [2024-11-22 11:58:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 8196 transitions. [2024-11-22 11:58:32,861 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 8196 transitions. Word has length 437 [2024-11-22 11:58:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:32,862 INFO L471 AbstractCegarLoop]: Abstraction has 5065 states and 8196 transitions. [2024-11-22 11:58:32,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 8196 transitions. [2024-11-22 11:58:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-22 11:58:32,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:32,873 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:32,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:58:32,873 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:32,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1390045769, now seen corresponding path program 1 times [2024-11-22 11:58:32,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:32,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154889109] [2024-11-22 11:58:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:58:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:58:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:58:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154889109] [2024-11-22 11:58:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154889109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:58:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:58:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:58:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83520498] [2024-11-22 11:58:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:58:33,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:58:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:58:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:58:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:58:33,783 INFO L87 Difference]: Start difference. First operand 5065 states and 8196 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:58:33,894 INFO L93 Difference]: Finished difference Result 10135 states and 16405 transitions. [2024-11-22 11:58:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:58:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 438 [2024-11-22 11:58:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:58:33,917 INFO L225 Difference]: With dead ends: 10135 [2024-11-22 11:58:33,917 INFO L226 Difference]: Without dead ends: 5097 [2024-11-22 11:58:33,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:58:33,928 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:58:33,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1393 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:58:33,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2024-11-22 11:58:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 5097. [2024-11-22 11:58:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 4512 states have (on average 1.574468085106383) internal successors, (7104), 4521 states have internal predecessors, (7104), 562 states have call successors, (562), 22 states have call predecessors, (562), 22 states have return successors, (562), 553 states have call predecessors, (562), 562 states have call successors, (562) [2024-11-22 11:58:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 8228 transitions. [2024-11-22 11:58:34,154 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 8228 transitions. Word has length 438 [2024-11-22 11:58:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:58:34,155 INFO L471 AbstractCegarLoop]: Abstraction has 5097 states and 8228 transitions. [2024-11-22 11:58:34,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:58:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 8228 transitions. [2024-11-22 11:58:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-22 11:58:34,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:58:34,163 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:34,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:58:34,163 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:58:34,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:58:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1002273106, now seen corresponding path program 1 times [2024-11-22 11:58:34,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:58:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986504632] [2024-11-22 11:58:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:58:34,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:58:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat