./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.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_fillercode_fillercodesize_ps-cn-500_file-38.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 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:43:14,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:43:14,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:43:14,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:43:14,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:43:15,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:43:15,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:43:15,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:43:15,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:43:15,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:43:15,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:43:15,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:43:15,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:43:15,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:43:15,007 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:43:15,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:43:15,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:43:15,015 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:43:15,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:43:15,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:43:15,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:43:15,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:43:15,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:43:15,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:43:15,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:43:15,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:43:15,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:43:15,018 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:43:15,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:43:15,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:43:15,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:43:15,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:43:15,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:43:15,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:43:15,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:43:15,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:43:15,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:43:15,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:43:15,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:43:15,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:43:15,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:43:15,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:43:15,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b [2024-11-22 07:43:15,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:43:15,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:43:15,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:43:15,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:43:15,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:43:15,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-22 07:43:16,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:43:17,036 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:43:17,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-22 07:43:17,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382e276a4/aef48ecf93eb4ce592026d049fcf5d9b/FLAGc9e8cd0c0 [2024-11-22 07:43:17,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382e276a4/aef48ecf93eb4ce592026d049fcf5d9b [2024-11-22 07:43:17,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:43:17,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:43:17,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:43:17,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:43:17,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:43:17,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ced9f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17, skipping insertion in model container [2024-11-22 07:43:17,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:43:17,261 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_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2024-11-22 07:43:17,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:43:17,483 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:43:17,492 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_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2024-11-22 07:43:17,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:43:17,561 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:43:17,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17 WrapperNode [2024-11-22 07:43:17,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:43:17,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:43:17,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:43:17,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:43:17,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,649 INFO L138 Inliner]: procedures = 26, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 864 [2024-11-22 07:43:17,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:43:17,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:43:17,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:43:17,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:43:17,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,721 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 07:43:17,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:43:17,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:43:17,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:43:17,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:43:17,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (1/1) ... [2024-11-22 07:43:17,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:43:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:43:17,822 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 07:43:17,827 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 07:43:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:43:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:43:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:43:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:43:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:43:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:43:18,081 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:43:18,085 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:43:19,527 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-22 07:43:19,528 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:43:19,553 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:43:19,555 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:43:19,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:43:19 BoogieIcfgContainer [2024-11-22 07:43:19,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:43:19,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:43:19,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:43:19,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:43:19,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:43:17" (1/3) ... [2024-11-22 07:43:19,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c81c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:43:19, skipping insertion in model container [2024-11-22 07:43:19,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:43:17" (2/3) ... [2024-11-22 07:43:19,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c81c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:43:19, skipping insertion in model container [2024-11-22 07:43:19,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:43:19" (3/3) ... [2024-11-22 07:43:19,567 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-22 07:43:19,585 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:43:19,585 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:43:19,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:43:19,677 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;@3d7e55df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:43:19,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:43:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 246 states have (on average 1.5731707317073171) internal successors, (387), 247 states have internal predecessors, (387), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-22 07:43:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:19,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:19,770 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:19,770 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:19,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash -295408479, now seen corresponding path program 1 times [2024-11-22 07:43:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:19,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993935698] [2024-11-22 07:43:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2024-11-22 07:43:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993935698] [2024-11-22 07:43:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993935698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:43:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038953212] [2024-11-22 07:43:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:20,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:43:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:43:20,381 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 07:43:20,382 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 07:43:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:20,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:43:20,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:43:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2024-11-22 07:43:20,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:43:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038953212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:20,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:43:20,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:43:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706137169] [2024-11-22 07:43:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:20,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:43:20,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:43:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:43:20,923 INFO L87 Difference]: Start difference. First operand has 358 states, 246 states have (on average 1.5731707317073171) internal successors, (387), 247 states have internal predecessors, (387), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2024-11-22 07:43:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:20,980 INFO L93 Difference]: Finished difference Result 709 states and 1313 transitions. [2024-11-22 07:43:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:43:20,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) Word has length 697 [2024-11-22 07:43:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:20,992 INFO L225 Difference]: With dead ends: 709 [2024-11-22 07:43:20,992 INFO L226 Difference]: Without dead ends: 354 [2024-11-22 07:43:21,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 698 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 07:43:21,004 INFO L432 NwaCegarLoop]: 597 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, 597 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 07:43:21,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:43:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-22 07:43:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2024-11-22 07:43:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 243 states have (on average 1.559670781893004) internal successors, (379), 243 states have internal predecessors, (379), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-22 07:43:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 597 transitions. [2024-11-22 07:43:21,094 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 597 transitions. Word has length 697 [2024-11-22 07:43:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:21,094 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 597 transitions. [2024-11-22 07:43:21,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2024-11-22 07:43:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 597 transitions. [2024-11-22 07:43:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:21,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:21,111 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:21,123 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 07:43:21,312 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 07:43:21,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:21,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1349456401, now seen corresponding path program 1 times [2024-11-22 07:43:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337765555] [2024-11-22 07:43:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:21,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337765555] [2024-11-22 07:43:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337765555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:21,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:43:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479783780] [2024-11-22 07:43:21,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:21,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:43:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:43:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:43:21,849 INFO L87 Difference]: Start difference. First operand 354 states and 597 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:21,962 INFO L93 Difference]: Finished difference Result 1033 states and 1742 transitions. [2024-11-22 07:43:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:43:21,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-22 07:43:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:21,969 INFO L225 Difference]: With dead ends: 1033 [2024-11-22 07:43:21,969 INFO L226 Difference]: Without dead ends: 682 [2024-11-22 07:43:21,971 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 07:43:21,972 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 516 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:21,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1470 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:43:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-22 07:43:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 440. [2024-11-22 07:43:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 329 states have (on average 1.6200607902735562) internal successors, (533), 329 states have internal predecessors, (533), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-22 07:43:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 751 transitions. [2024-11-22 07:43:22,011 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 751 transitions. Word has length 697 [2024-11-22 07:43:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:22,013 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 751 transitions. [2024-11-22 07:43:22,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 751 transitions. [2024-11-22 07:43:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:22,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:22,018 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:22,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:43:22,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:22,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1084291665, now seen corresponding path program 1 times [2024-11-22 07:43:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800559698] [2024-11-22 07:43:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:22,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800559698] [2024-11-22 07:43:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800559698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:43:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734372781] [2024-11-22 07:43:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:22,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:43:22,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:43:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:43:22,422 INFO L87 Difference]: Start difference. First operand 440 states and 751 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:22,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:22,502 INFO L93 Difference]: Finished difference Result 1314 states and 2247 transitions. [2024-11-22 07:43:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:43:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-22 07:43:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:22,519 INFO L225 Difference]: With dead ends: 1314 [2024-11-22 07:43:22,519 INFO L226 Difference]: Without dead ends: 877 [2024-11-22 07:43:22,522 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 07:43:22,524 INFO L432 NwaCegarLoop]: 1118 mSDtfsCounter, 585 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:22,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1705 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:43:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-22 07:43:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2024-11-22 07:43:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 652 states have (on average 1.6196319018404908) internal successors, (1056), 652 states have internal predecessors, (1056), 218 states have call successors, (218), 2 states have call predecessors, (218), 2 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2024-11-22 07:43:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1492 transitions. [2024-11-22 07:43:22,633 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1492 transitions. Word has length 697 [2024-11-22 07:43:22,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:22,635 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1492 transitions. [2024-11-22 07:43:22,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1492 transitions. [2024-11-22 07:43:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:22,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:22,645 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:22,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:43:22,645 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:22,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1824472237, now seen corresponding path program 1 times [2024-11-22 07:43:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362185847] [2024-11-22 07:43:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362185847] [2024-11-22 07:43:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362185847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:22,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:22,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:43:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690775524] [2024-11-22 07:43:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:43:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:43:22,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:43:22,967 INFO L87 Difference]: Start difference. First operand 873 states and 1492 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:23,060 INFO L93 Difference]: Finished difference Result 2173 states and 3672 transitions. [2024-11-22 07:43:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:43:23,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-22 07:43:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:23,070 INFO L225 Difference]: With dead ends: 2173 [2024-11-22 07:43:23,070 INFO L226 Difference]: Without dead ends: 1303 [2024-11-22 07:43:23,073 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 07:43:23,074 INFO L432 NwaCegarLoop]: 878 mSDtfsCounter, 339 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:23,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1467 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:43:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-22 07:43:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1299. [2024-11-22 07:43:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 862 states have (on average 1.5243619489559164) internal successors, (1314), 864 states have internal predecessors, (1314), 432 states have call successors, (432), 4 states have call predecessors, (432), 4 states have return successors, (432), 430 states have call predecessors, (432), 432 states have call successors, (432) [2024-11-22 07:43:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2178 transitions. [2024-11-22 07:43:23,218 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2178 transitions. Word has length 697 [2024-11-22 07:43:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:23,219 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 2178 transitions. [2024-11-22 07:43:23,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2178 transitions. [2024-11-22 07:43:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:23,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:23,224 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:23,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:43:23,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:23,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:23,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1605617519, now seen corresponding path program 1 times [2024-11-22 07:43:23,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229263516] [2024-11-22 07:43:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:23,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229263516] [2024-11-22 07:43:23,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229263516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:23,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:23,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:43:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346350621] [2024-11-22 07:43:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:23,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:43:23,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:43:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:43:23,840 INFO L87 Difference]: Start difference. First operand 1299 states and 2178 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:23,967 INFO L93 Difference]: Finished difference Result 3477 states and 5860 transitions. [2024-11-22 07:43:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:43:23,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-22 07:43:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:23,981 INFO L225 Difference]: With dead ends: 3477 [2024-11-22 07:43:23,982 INFO L226 Difference]: Without dead ends: 2181 [2024-11-22 07:43:23,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:43:23,986 INFO L432 NwaCegarLoop]: 1134 mSDtfsCounter, 590 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:23,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1723 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:43:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2024-11-22 07:43:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2167. [2024-11-22 07:43:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1510 states have (on average 1.5589403973509934) internal successors, (2354), 1512 states have internal predecessors, (2354), 650 states have call successors, (650), 6 states have call predecessors, (650), 6 states have return successors, (650), 648 states have call predecessors, (650), 650 states have call successors, (650) [2024-11-22 07:43:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3654 transitions. [2024-11-22 07:43:24,168 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3654 transitions. Word has length 697 [2024-11-22 07:43:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:24,169 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3654 transitions. [2024-11-22 07:43:24,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3654 transitions. [2024-11-22 07:43:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-22 07:43:24,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:24,174 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:24,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:43:24,174 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:24,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash 34174639, now seen corresponding path program 1 times [2024-11-22 07:43:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:24,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048384696] [2024-11-22 07:43:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048384696] [2024-11-22 07:43:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048384696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:25,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:25,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:43:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432152362] [2024-11-22 07:43:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:25,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:43:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:43:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:43:25,341 INFO L87 Difference]: Start difference. First operand 2167 states and 3654 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:26,121 INFO L93 Difference]: Finished difference Result 8629 states and 14553 transitions. [2024-11-22 07:43:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:43:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-22 07:43:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:26,156 INFO L225 Difference]: With dead ends: 8629 [2024-11-22 07:43:26,157 INFO L226 Difference]: Without dead ends: 6465 [2024-11-22 07:43:26,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:43:26,168 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 1594 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:26,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2358 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:43:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2024-11-22 07:43:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 4329. [2024-11-22 07:43:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3016 states have (on average 1.5576923076923077) internal successors, (4698), 3020 states have internal predecessors, (4698), 1300 states have call successors, (1300), 12 states have call predecessors, (1300), 12 states have return successors, (1300), 1296 states have call predecessors, (1300), 1300 states have call successors, (1300) [2024-11-22 07:43:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 7298 transitions. [2024-11-22 07:43:26,963 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 7298 transitions. Word has length 697 [2024-11-22 07:43:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:26,965 INFO L471 AbstractCegarLoop]: Abstraction has 4329 states and 7298 transitions. [2024-11-22 07:43:26,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 7298 transitions. [2024-11-22 07:43:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-22 07:43:26,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:26,974 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:26,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:43:26,974 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:26,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 806915875, now seen corresponding path program 1 times [2024-11-22 07:43:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:26,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769545063] [2024-11-22 07:43:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769545063] [2024-11-22 07:43:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769545063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:27,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:43:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500871278] [2024-11-22 07:43:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:27,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:43:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:43:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:43:27,981 INFO L87 Difference]: Start difference. First operand 4329 states and 7298 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:29,282 INFO L93 Difference]: Finished difference Result 11283 states and 18793 transitions. [2024-11-22 07:43:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:43:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-22 07:43:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:29,338 INFO L225 Difference]: With dead ends: 11283 [2024-11-22 07:43:29,339 INFO L226 Difference]: Without dead ends: 6957 [2024-11-22 07:43:29,356 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 07:43:29,357 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 813 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:29,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1589 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 07:43:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2024-11-22 07:43:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 5225. [2024-11-22 07:43:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 3480 states have (on average 1.5195402298850575) internal successors, (5288), 3488 states have internal predecessors, (5288), 1728 states have call successors, (1728), 16 states have call predecessors, (1728), 16 states have return successors, (1728), 1720 states have call predecessors, (1728), 1728 states have call successors, (1728) [2024-11-22 07:43:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8744 transitions. [2024-11-22 07:43:30,068 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8744 transitions. Word has length 698 [2024-11-22 07:43:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:30,071 INFO L471 AbstractCegarLoop]: Abstraction has 5225 states and 8744 transitions. [2024-11-22 07:43:30,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8744 transitions. [2024-11-22 07:43:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-22 07:43:30,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:30,081 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:30,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:43:30,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:30,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash 297442785, now seen corresponding path program 1 times [2024-11-22 07:43:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:30,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364736945] [2024-11-22 07:43:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:30,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:30,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364736945] [2024-11-22 07:43:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364736945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:30,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:30,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:43:30,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110264214] [2024-11-22 07:43:30,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:30,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:43:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:30,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:43:30,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:43:30,911 INFO L87 Difference]: Start difference. First operand 5225 states and 8744 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:32,151 INFO L93 Difference]: Finished difference Result 15959 states and 26683 transitions. [2024-11-22 07:43:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:43:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-22 07:43:32,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:32,229 INFO L225 Difference]: With dead ends: 15959 [2024-11-22 07:43:32,230 INFO L226 Difference]: Without dead ends: 10737 [2024-11-22 07:43:32,259 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 07:43:32,259 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 619 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:32,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2154 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:43:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2024-11-22 07:43:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 10461. [2024-11-22 07:43:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 6972 states have (on average 1.5186460126219163) internal successors, (10588), 6988 states have internal predecessors, (10588), 3456 states have call successors, (3456), 32 states have call predecessors, (3456), 32 states have return successors, (3456), 3440 states have call predecessors, (3456), 3456 states have call successors, (3456) [2024-11-22 07:43:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 17500 transitions. [2024-11-22 07:43:33,823 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 17500 transitions. Word has length 698 [2024-11-22 07:43:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:43:33,824 INFO L471 AbstractCegarLoop]: Abstraction has 10461 states and 17500 transitions. [2024-11-22 07:43:33,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 17500 transitions. [2024-11-22 07:43:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-22 07:43:33,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:43:33,829 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:33,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 07:43:33,829 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:43:33,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:43:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash -713674465, now seen corresponding path program 1 times [2024-11-22 07:43:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:43:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23907996] [2024-11-22 07:43:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:43:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:43:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:43:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:43:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:43:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23907996] [2024-11-22 07:43:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23907996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:43:36,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:43:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 07:43:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667121604] [2024-11-22 07:43:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:43:36,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 07:43:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:43:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 07:43:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:43:36,605 INFO L87 Difference]: Start difference. First operand 10461 states and 17500 transitions. Second operand has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:43:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:43:58,764 INFO L93 Difference]: Finished difference Result 172093 states and 293860 transitions. [2024-11-22 07:43:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 07:43:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-22 07:43:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:43:59,188 INFO L225 Difference]: With dead ends: 172093 [2024-11-22 07:43:59,188 INFO L226 Difference]: Without dead ends: 161635 [2024-11-22 07:43:59,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=475, Invalid=1247, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 07:43:59,276 INFO L432 NwaCegarLoop]: 1274 mSDtfsCounter, 7881 mSDsluCounter, 15064 mSDsCounter, 0 mSdLazyCounter, 9080 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7881 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 10113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 9080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:43:59,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7881 Valid, 16338 Invalid, 10113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1033 Valid, 9080 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-22 07:43:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161635 states. [2024-11-22 07:44:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161635 to 49981. [2024-11-22 07:44:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49981 states, 39012 states have (on average 1.6223726033015482) internal successors, (63292), 39140 states have internal predecessors, (63292), 10776 states have call successors, (10776), 192 states have call predecessors, (10776), 192 states have return successors, (10776), 10648 states have call predecessors, (10776), 10776 states have call successors, (10776) [2024-11-22 07:44:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49981 states to 49981 states and 84844 transitions. [2024-11-22 07:44:06,114 INFO L78 Accepts]: Start accepts. Automaton has 49981 states and 84844 transitions. Word has length 698 [2024-11-22 07:44:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:06,115 INFO L471 AbstractCegarLoop]: Abstraction has 49981 states and 84844 transitions. [2024-11-22 07:44:06,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 49981 states and 84844 transitions. [2024-11-22 07:44:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-22 07:44:06,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:06,125 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:06,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 07:44:06,125 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:06,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash 327862707, now seen corresponding path program 1 times [2024-11-22 07:44:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:06,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830932369] [2024-11-22 07:44:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830932369] [2024-11-22 07:44:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830932369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:44:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603893389] [2024-11-22 07:44:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:06,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:44:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:44:06,965 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 07:44:06,966 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 07:44:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:07,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 07:44:07,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:44:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2024-11-22 07:44:07,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:44:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 204 proven. 120 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603893389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:44:08,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:44:08,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 10 [2024-11-22 07:44:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583676260] [2024-11-22 07:44:08,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:44:08,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 07:44:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 07:44:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:44:08,242 INFO L87 Difference]: Start difference. First operand 49981 states and 84844 transitions. Second operand has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) [2024-11-22 07:44:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:11,258 INFO L93 Difference]: Finished difference Result 72884 states and 123362 transitions. [2024-11-22 07:44:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 07:44:11,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) Word has length 698 [2024-11-22 07:44:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:11,370 INFO L225 Difference]: With dead ends: 72884 [2024-11-22 07:44:11,370 INFO L226 Difference]: Without dead ends: 22906 [2024-11-22 07:44:11,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1419 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2024-11-22 07:44:11,483 INFO L432 NwaCegarLoop]: 713 mSDtfsCounter, 1401 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1013 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:11,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 2375 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1013 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 07:44:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22906 states. [2024-11-22 07:44:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22906 to 14837. [2024-11-22 07:44:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14837 states, 11943 states have (on average 1.6242987524072678) internal successors, (19399), 11967 states have internal predecessors, (19399), 2781 states have call successors, (2781), 112 states have call predecessors, (2781), 112 states have return successors, (2781), 2757 states have call predecessors, (2781), 2781 states have call successors, (2781) [2024-11-22 07:44:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14837 states to 14837 states and 24961 transitions. [2024-11-22 07:44:13,364 INFO L78 Accepts]: Start accepts. Automaton has 14837 states and 24961 transitions. Word has length 698 [2024-11-22 07:44:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:13,365 INFO L471 AbstractCegarLoop]: Abstraction has 14837 states and 24961 transitions. [2024-11-22 07:44:13,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) [2024-11-22 07:44:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 14837 states and 24961 transitions. [2024-11-22 07:44:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-22 07:44:13,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:13,373 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:13,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 07:44:13,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 07:44:13,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:13,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1604655337, now seen corresponding path program 1 times [2024-11-22 07:44:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:13,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367104601] [2024-11-22 07:44:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:44:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367104601] [2024-11-22 07:44:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367104601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:44:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:44:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:44:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020515759] [2024-11-22 07:44:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:44:14,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:44:14,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:44:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:44:14,028 INFO L87 Difference]: Start difference. First operand 14837 states and 24961 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:15,483 INFO L93 Difference]: Finished difference Result 28957 states and 48605 transitions. [2024-11-22 07:44:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:44:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2024-11-22 07:44:15,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:15,537 INFO L225 Difference]: With dead ends: 28957 [2024-11-22 07:44:15,537 INFO L226 Difference]: Without dead ends: 14921 [2024-11-22 07:44:15,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 07:44:15,558 INFO L432 NwaCegarLoop]: 583 mSDtfsCounter, 377 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:15,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1213 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:44:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2024-11-22 07:44:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 14921. [2024-11-22 07:44:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14921 states, 12006 states have (on average 1.618024321172747) internal successors, (19426), 12030 states have internal predecessors, (19426), 2781 states have call successors, (2781), 133 states have call predecessors, (2781), 133 states have return successors, (2781), 2757 states have call predecessors, (2781), 2781 states have call successors, (2781) [2024-11-22 07:44:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 24988 transitions. [2024-11-22 07:44:17,095 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 24988 transitions. Word has length 699 [2024-11-22 07:44:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:17,096 INFO L471 AbstractCegarLoop]: Abstraction has 14921 states and 24988 transitions. [2024-11-22 07:44:17,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 24988 transitions. [2024-11-22 07:44:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-22 07:44:17,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:17,103 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:17,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 07:44:17,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:17,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2038384423, now seen corresponding path program 1 times [2024-11-22 07:44:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931634996] [2024-11-22 07:44:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:18,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931634996] [2024-11-22 07:44:18,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931634996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:44:18,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821233508] [2024-11-22 07:44:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:44:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:44:18,245 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 07:44:18,246 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 07:44:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:18,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:44:18,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:44:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:18,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:44:18,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821233508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:44:18,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:44:18,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2024-11-22 07:44:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217968053] [2024-11-22 07:44:18,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:44:18,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:44:18,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:44:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:44:18,669 INFO L87 Difference]: Start difference. First operand 14921 states and 24988 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:19,570 INFO L93 Difference]: Finished difference Result 15075 states and 25160 transitions. [2024-11-22 07:44:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:44:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2024-11-22 07:44:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:19,608 INFO L225 Difference]: With dead ends: 15075 [2024-11-22 07:44:19,608 INFO L226 Difference]: Without dead ends: 7433 [2024-11-22 07:44:19,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:44:19,630 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 425 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:19,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1221 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:44:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2024-11-22 07:44:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7361. [2024-11-22 07:44:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7361 states, 6117 states have (on average 1.645414418832761) internal successors, (10065), 6125 states have internal predecessors, (10065), 1181 states have call successors, (1181), 62 states have call predecessors, (1181), 62 states have return successors, (1181), 1173 states have call predecessors, (1181), 1181 states have call successors, (1181) [2024-11-22 07:44:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 12427 transitions. [2024-11-22 07:44:20,442 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 12427 transitions. Word has length 699 [2024-11-22 07:44:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:20,443 INFO L471 AbstractCegarLoop]: Abstraction has 7361 states and 12427 transitions. [2024-11-22 07:44:20,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 12427 transitions. [2024-11-22 07:44:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-22 07:44:20,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:20,448 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:20,458 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 07:44:20,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:44:20,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:20,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -696255699, now seen corresponding path program 1 times [2024-11-22 07:44:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:20,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809513952] [2024-11-22 07:44:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809513952] [2024-11-22 07:44:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809513952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:44:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424384832] [2024-11-22 07:44:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:21,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:44:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:44:21,516 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 07:44:21,517 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 07:44:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:21,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 07:44:21,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:44:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 15489 proven. 300 refuted. 0 times theorem prover too weak. 7755 trivial. 0 not checked. [2024-11-22 07:44:23,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:44:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 240 proven. 84 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-22 07:44:23,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424384832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:44:23,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:44:23,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2024-11-22 07:44:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010778743] [2024-11-22 07:44:23,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:44:23,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 07:44:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 07:44:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 07:44:23,603 INFO L87 Difference]: Start difference. First operand 7361 states and 12427 transitions. Second operand has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) [2024-11-22 07:44:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:25,861 INFO L93 Difference]: Finished difference Result 14105 states and 23548 transitions. [2024-11-22 07:44:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 07:44:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) Word has length 699 [2024-11-22 07:44:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:25,882 INFO L225 Difference]: With dead ends: 14105 [2024-11-22 07:44:25,883 INFO L226 Difference]: Without dead ends: 7719 [2024-11-22 07:44:25,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1437 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 07:44:25,892 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 4623 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 2521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2521 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:25,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4625 Valid, 2199 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2521 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 07:44:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2024-11-22 07:44:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7569. [2024-11-22 07:44:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 6289 states have (on average 1.6264906980442042) internal successors, (10229), 6297 states have internal predecessors, (10229), 1181 states have call successors, (1181), 98 states have call predecessors, (1181), 98 states have return successors, (1181), 1173 states have call predecessors, (1181), 1181 states have call successors, (1181) [2024-11-22 07:44:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 12591 transitions. [2024-11-22 07:44:26,468 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 12591 transitions. Word has length 699 [2024-11-22 07:44:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:26,472 INFO L471 AbstractCegarLoop]: Abstraction has 7569 states and 12591 transitions. [2024-11-22 07:44:26,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) [2024-11-22 07:44:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 12591 transitions. [2024-11-22 07:44:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-22 07:44:26,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:26,480 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:26,491 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 07:44:26,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:44:26,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:26,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1552797633, now seen corresponding path program 1 times [2024-11-22 07:44:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599356291] [2024-11-22 07:44:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:44:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599356291] [2024-11-22 07:44:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599356291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:44:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:44:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:44:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608274912] [2024-11-22 07:44:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:44:26,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:44:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:44:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:44:26,874 INFO L87 Difference]: Start difference. First operand 7569 states and 12591 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:27,625 INFO L93 Difference]: Finished difference Result 20770 states and 34733 transitions. [2024-11-22 07:44:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:44:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 701 [2024-11-22 07:44:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:27,670 INFO L225 Difference]: With dead ends: 20770 [2024-11-22 07:44:27,670 INFO L226 Difference]: Without dead ends: 13492 [2024-11-22 07:44:27,687 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 07:44:27,688 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 358 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:27,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1460 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:44:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2024-11-22 07:44:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13482. [2024-11-22 07:44:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13482 states, 11602 states have (on average 1.635666264437166) internal successors, (18977), 11626 states have internal predecessors, (18977), 1733 states have call successors, (1733), 146 states have call predecessors, (1733), 146 states have return successors, (1733), 1709 states have call predecessors, (1733), 1733 states have call successors, (1733) [2024-11-22 07:44:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13482 states to 13482 states and 22443 transitions. [2024-11-22 07:44:28,691 INFO L78 Accepts]: Start accepts. Automaton has 13482 states and 22443 transitions. Word has length 701 [2024-11-22 07:44:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:28,693 INFO L471 AbstractCegarLoop]: Abstraction has 13482 states and 22443 transitions. [2024-11-22 07:44:28,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13482 states and 22443 transitions. [2024-11-22 07:44:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-22 07:44:28,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:28,700 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:28,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 07:44:28,700 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:28,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1593472383, now seen corresponding path program 1 times [2024-11-22 07:44:28,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:28,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882243955] [2024-11-22 07:44:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:28,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:44:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-22 07:44:29,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:44:29,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882243955] [2024-11-22 07:44:29,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882243955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:44:29,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:44:29,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:44:29,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341990639] [2024-11-22 07:44:29,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:44:29,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:44:29,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:44:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:44:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:44:29,258 INFO L87 Difference]: Start difference. First operand 13482 states and 22443 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:44:30,837 INFO L93 Difference]: Finished difference Result 40565 states and 67631 transitions. [2024-11-22 07:44:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:44:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 701 [2024-11-22 07:44:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:44:30,893 INFO L225 Difference]: With dead ends: 40565 [2024-11-22 07:44:30,893 INFO L226 Difference]: Without dead ends: 28695 [2024-11-22 07:44:30,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:44:30,916 INFO L432 NwaCegarLoop]: 1422 mSDtfsCounter, 1105 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:44:30,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 3304 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:44:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28695 states. [2024-11-22 07:44:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28695 to 24265. [2024-11-22 07:44:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24265 states, 21808 states have (on average 1.6714508437270725) internal successors, (36451), 21824 states have internal predecessors, (36451), 2253 states have call successors, (2253), 203 states have call predecessors, (2253), 203 states have return successors, (2253), 2237 states have call predecessors, (2253), 2253 states have call successors, (2253) [2024-11-22 07:44:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24265 states to 24265 states and 40957 transitions. [2024-11-22 07:44:32,346 INFO L78 Accepts]: Start accepts. Automaton has 24265 states and 40957 transitions. Word has length 701 [2024-11-22 07:44:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:44:32,347 INFO L471 AbstractCegarLoop]: Abstraction has 24265 states and 40957 transitions. [2024-11-22 07:44:32,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-22 07:44:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 24265 states and 40957 transitions. [2024-11-22 07:44:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-22 07:44:32,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:44:32,364 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:32,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 07:44:32,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:44:32,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:44:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2016174209, now seen corresponding path program 1 times [2024-11-22 07:44:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:44:32,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804575512] [2024-11-22 07:44:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:44:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:44:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat