./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-250_file-36.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 08d675ba4148739e9e7cf1bbda146cfc1e7cae9e235e349f1daedec05eaa7d10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:31:18,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:31:18,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:31:18,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:31:18,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:31:18,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:31:18,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:31:18,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:31:18,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:31:18,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:31:18,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:31:18,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:31:18,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:31:18,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:31:18,616 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:31:18,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:31:18,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:31:18,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:31:18,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:31:18,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:31:18,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:31:18,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:31:18,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:31:18,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:31:18,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:31:18,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:31:18,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:31:18,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:31:18,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:31:18,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:31:18,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:31:18,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:31:18,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:31:18,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:31:18,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:31:18,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:31:18,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:31:18,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:31:18,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:31:18,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:31:18,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:31:18,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:31:18,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08d675ba4148739e9e7cf1bbda146cfc1e7cae9e235e349f1daedec05eaa7d10 [2024-11-18 19:31:18,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:31:18,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:31:18,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:31:18,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:31:18,886 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:31:18,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-18 19:31:20,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:31:20,578 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:31:20,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-18 19:31:20,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ef7ae69/935cf0fdaf0348319b58863e96036bb8/FLAG94db6300d [2024-11-18 19:31:20,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ef7ae69/935cf0fdaf0348319b58863e96036bb8 [2024-11-18 19:31:20,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:31:20,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:31:20,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:20,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:31:20,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:31:20,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:20" (1/1) ... [2024-11-18 19:31:20,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e22e933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:20, skipping insertion in model container [2024-11-18 19:31:20,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:20" (1/1) ... [2024-11-18 19:31:20,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:31:21,203 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-250_file-36.i[916,929] [2024-11-18 19:31:21,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:21,372 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:31:21,384 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-250_file-36.i[916,929] [2024-11-18 19:31:21,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:21,501 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:31:21,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21 WrapperNode [2024-11-18 19:31:21,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:21,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:21,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:31:21,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:31:21,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,636 INFO L138 Inliner]: procedures = 26, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 615 [2024-11-18 19:31:21,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:21,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:31:21,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:31:21,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:31:21,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,702 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]. [2024-11-18 19:31:21,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:31:21,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:31:21,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:31:21,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:31:21,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (1/1) ... [2024-11-18 19:31:21,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:31:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:21,798 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) [2024-11-18 19:31:21,806 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 [2024-11-18 19:31:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:31:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:31:21,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:31:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:31:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:31:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:31:21,995 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:31:21,997 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:31:22,732 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 19:31:22,732 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:31:22,744 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:31:22,744 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:31:22,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:22 BoogieIcfgContainer [2024-11-18 19:31:22,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:31:22,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:31:22,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:31:22,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:31:22,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:20" (1/3) ... [2024-11-18 19:31:22,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b94828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:22, skipping insertion in model container [2024-11-18 19:31:22,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21" (2/3) ... [2024-11-18 19:31:22,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b94828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:22, skipping insertion in model container [2024-11-18 19:31:22,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:22" (3/3) ... [2024-11-18 19:31:22,751 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-18 19:31:22,762 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:31:22,763 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:31:22,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:31:22,825 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;@7e7a072b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:31:22,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:31:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 168 states have (on average 1.494047619047619) internal successors, (251), 169 states have internal predecessors, (251), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 19:31:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:22,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:22,852 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:22,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:22,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1928267879, now seen corresponding path program 1 times [2024-11-18 19:31:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092118859] [2024-11-18 19:31:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-18 19:31:23,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:23,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092118859] [2024-11-18 19:31:23,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092118859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029834691] [2024-11-18 19:31:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:23,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:23,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:23,398 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) [2024-11-18 19:31:23,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:31:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:23,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:31:23,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-18 19:31:23,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:31:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029834691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:31:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:31:23,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709049097] [2024-11-18 19:31:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:23,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:31:23,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:23,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:31:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:31:23,853 INFO L87 Difference]: Start difference. First operand has 263 states, 168 states have (on average 1.494047619047619) internal successors, (251), 169 states have internal predecessors, (251), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-18 19:31:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:23,918 INFO L93 Difference]: Finished difference Result 515 states and 950 transitions. [2024-11-18 19:31:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:31:23,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) Word has length 574 [2024-11-18 19:31:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:23,930 INFO L225 Difference]: With dead ends: 515 [2024-11-18 19:31:23,930 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 19:31:23,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:31:23,941 INFO L432 NwaCegarLoop]: 418 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, 418 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 [2024-11-18 19:31:23,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 19:31:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-18 19:31:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.453416149068323) internal successors, (234), 161 states have internal predecessors, (234), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 19:31:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 418 transitions. [2024-11-18 19:31:24,011 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 418 transitions. Word has length 574 [2024-11-18 19:31:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:24,011 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 418 transitions. [2024-11-18 19:31:24,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-18 19:31:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 418 transitions. [2024-11-18 19:31:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:24,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:24,025 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:24,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:31:24,225 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 [2024-11-18 19:31:24,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:24,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1816391901, now seen corresponding path program 1 times [2024-11-18 19:31:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168496086] [2024-11-18 19:31:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168496086] [2024-11-18 19:31:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168496086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:24,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848452803] [2024-11-18 19:31:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:24,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:24,788 INFO L87 Difference]: Start difference. First operand 255 states and 418 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:24,889 INFO L93 Difference]: Finished difference Result 657 states and 1078 transitions. [2024-11-18 19:31:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:24,902 INFO L225 Difference]: With dead ends: 657 [2024-11-18 19:31:24,903 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 19:31:24,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:24,905 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 208 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:24,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 918 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 19:31:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 402. [2024-11-18 19:31:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 269 states have (on average 1.479553903345725) internal successors, (398), 270 states have internal predecessors, (398), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-18 19:31:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 658 transitions. [2024-11-18 19:31:24,988 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 658 transitions. Word has length 574 [2024-11-18 19:31:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:24,991 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 658 transitions. [2024-11-18 19:31:24,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 658 transitions. [2024-11-18 19:31:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:24,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:24,999 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:24,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:31:25,000 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:25,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1457507041, now seen corresponding path program 1 times [2024-11-18 19:31:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278921155] [2024-11-18 19:31:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278921155] [2024-11-18 19:31:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278921155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:25,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:31:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974170802] [2024-11-18 19:31:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:25,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:31:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:31:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:25,706 INFO L87 Difference]: Start difference. First operand 402 states and 658 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:26,112 INFO L93 Difference]: Finished difference Result 1517 states and 2496 transitions. [2024-11-18 19:31:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:31:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:26,125 INFO L225 Difference]: With dead ends: 1517 [2024-11-18 19:31:26,125 INFO L226 Difference]: Without dead ends: 1118 [2024-11-18 19:31:26,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:31:26,127 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 892 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:26,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1622 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:31:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-18 19:31:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 955. [2024-11-18 19:31:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 694 states have (on average 1.521613832853026) internal successors, (1056), 699 states have internal predecessors, (1056), 254 states have call successors, (254), 6 states have call predecessors, (254), 6 states have return successors, (254), 249 states have call predecessors, (254), 254 states have call successors, (254) [2024-11-18 19:31:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1564 transitions. [2024-11-18 19:31:26,210 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1564 transitions. Word has length 574 [2024-11-18 19:31:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:26,215 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1564 transitions. [2024-11-18 19:31:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1564 transitions. [2024-11-18 19:31:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:26,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:26,219 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:26,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:31:26,219 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:26,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -518572583, now seen corresponding path program 1 times [2024-11-18 19:31:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501247208] [2024-11-18 19:31:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:26,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501247208] [2024-11-18 19:31:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501247208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:26,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:26,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:31:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119189297] [2024-11-18 19:31:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:26,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:31:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:31:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:26,590 INFO L87 Difference]: Start difference. First operand 955 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:26,964 INFO L93 Difference]: Finished difference Result 3492 states and 5709 transitions. [2024-11-18 19:31:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:31:26,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:26,978 INFO L225 Difference]: With dead ends: 3492 [2024-11-18 19:31:26,978 INFO L226 Difference]: Without dead ends: 2540 [2024-11-18 19:31:26,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:26,983 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 466 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:26,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1081 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 19:31:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2024-11-18 19:31:27,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2524. [2024-11-18 19:31:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 1951 states have (on average 1.5479241414659148) internal successors, (3020), 1968 states have internal predecessors, (3020), 554 states have call successors, (554), 18 states have call predecessors, (554), 18 states have return successors, (554), 537 states have call predecessors, (554), 554 states have call successors, (554) [2024-11-18 19:31:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 4128 transitions. [2024-11-18 19:31:27,284 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 4128 transitions. Word has length 574 [2024-11-18 19:31:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:27,285 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 4128 transitions. [2024-11-18 19:31:27,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 4128 transitions. [2024-11-18 19:31:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:27,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:27,292 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:27,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:31:27,293 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:27,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -571079069, now seen corresponding path program 1 times [2024-11-18 19:31:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946789956] [2024-11-18 19:31:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946789956] [2024-11-18 19:31:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946789956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:27,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:31:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739277798] [2024-11-18 19:31:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:27,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:31:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:31:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:27,830 INFO L87 Difference]: Start difference. First operand 2524 states and 4128 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:28,210 INFO L93 Difference]: Finished difference Result 6631 states and 10834 transitions. [2024-11-18 19:31:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:31:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:28,234 INFO L225 Difference]: With dead ends: 6631 [2024-11-18 19:31:28,234 INFO L226 Difference]: Without dead ends: 4110 [2024-11-18 19:31:28,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:28,244 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 400 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:28,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 990 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 19:31:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2024-11-18 19:31:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3331. [2024-11-18 19:31:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3331 states, 2586 states have (on average 1.5452436194895591) internal successors, (3996), 2609 states have internal predecessors, (3996), 718 states have call successors, (718), 26 states have call predecessors, (718), 26 states have return successors, (718), 695 states have call predecessors, (718), 718 states have call successors, (718) [2024-11-18 19:31:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 5432 transitions. [2024-11-18 19:31:28,489 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 5432 transitions. Word has length 574 [2024-11-18 19:31:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:28,490 INFO L471 AbstractCegarLoop]: Abstraction has 3331 states and 5432 transitions. [2024-11-18 19:31:28,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:28,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 5432 transitions. [2024-11-18 19:31:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:28,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:28,498 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:28,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:31:28,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:28,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash -127178395, now seen corresponding path program 1 times [2024-11-18 19:31:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:28,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641172336] [2024-11-18 19:31:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641172336] [2024-11-18 19:31:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641172336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:28,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:28,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:31:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945238946] [2024-11-18 19:31:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:28,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:31:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:31:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:28,851 INFO L87 Difference]: Start difference. First operand 3331 states and 5432 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:29,758 INFO L93 Difference]: Finished difference Result 11303 states and 18409 transitions. [2024-11-18 19:31:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:31:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:29,807 INFO L225 Difference]: With dead ends: 11303 [2024-11-18 19:31:29,808 INFO L226 Difference]: Without dead ends: 7975 [2024-11-18 19:31:29,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:31:29,822 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 443 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:29,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1616 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:31:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2024-11-18 19:31:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 7952. [2024-11-18 19:31:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 6096 states have (on average 1.5346128608923884) internal successors, (9355), 6154 states have internal predecessors, (9355), 1793 states have call successors, (1793), 62 states have call predecessors, (1793), 62 states have return successors, (1793), 1735 states have call predecessors, (1793), 1793 states have call successors, (1793) [2024-11-18 19:31:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 12941 transitions. [2024-11-18 19:31:30,290 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 12941 transitions. Word has length 574 [2024-11-18 19:31:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:30,291 INFO L471 AbstractCegarLoop]: Abstraction has 7952 states and 12941 transitions. [2024-11-18 19:31:30,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 12941 transitions. [2024-11-18 19:31:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:30,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:30,301 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:30,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:31:30,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -629503387, now seen corresponding path program 1 times [2024-11-18 19:31:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485337720] [2024-11-18 19:31:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:30,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:30,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485337720] [2024-11-18 19:31:30,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485337720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:30,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:31:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093812730] [2024-11-18 19:31:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:30,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:31:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:30,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:31:30,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:30,864 INFO L87 Difference]: Start difference. First operand 7952 states and 12941 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:31,674 INFO L93 Difference]: Finished difference Result 18591 states and 30124 transitions. [2024-11-18 19:31:31,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:31:31,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:31,776 INFO L225 Difference]: With dead ends: 18591 [2024-11-18 19:31:31,777 INFO L226 Difference]: Without dead ends: 10642 [2024-11-18 19:31:31,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:31:31,804 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 817 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:31,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1578 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:31:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2024-11-18 19:31:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 9784. [2024-11-18 19:31:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9784 states, 7468 states have (on average 1.5239689341189073) internal successors, (11381), 7540 states have internal predecessors, (11381), 2225 states have call successors, (2225), 90 states have call predecessors, (2225), 90 states have return successors, (2225), 2153 states have call predecessors, (2225), 2225 states have call successors, (2225) [2024-11-18 19:31:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 15831 transitions. [2024-11-18 19:31:32,552 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 15831 transitions. Word has length 574 [2024-11-18 19:31:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:32,553 INFO L471 AbstractCegarLoop]: Abstraction has 9784 states and 15831 transitions. [2024-11-18 19:31:32,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 15831 transitions. [2024-11-18 19:31:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-18 19:31:32,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:32,575 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:32,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:31:32,575 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:32,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash -982591769, now seen corresponding path program 1 times [2024-11-18 19:31:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809730587] [2024-11-18 19:31:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809730587] [2024-11-18 19:31:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809730587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:31:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618638269] [2024-11-18 19:31:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:32,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:31:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:31:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:32,874 INFO L87 Difference]: Start difference. First operand 9784 states and 15831 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:33,253 INFO L93 Difference]: Finished difference Result 19713 states and 31881 transitions. [2024-11-18 19:31:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:31:33,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-18 19:31:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:33,297 INFO L225 Difference]: With dead ends: 19713 [2024-11-18 19:31:33,297 INFO L226 Difference]: Without dead ends: 9932 [2024-11-18 19:31:33,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:33,325 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 0 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:33,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1228 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:31:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2024-11-18 19:31:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 9932. [2024-11-18 19:31:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 7616 states have (on average 1.5137867647058822) internal successors, (11529), 7688 states have internal predecessors, (11529), 2225 states have call successors, (2225), 90 states have call predecessors, (2225), 90 states have return successors, (2225), 2153 states have call predecessors, (2225), 2225 states have call successors, (2225) [2024-11-18 19:31:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 15979 transitions. [2024-11-18 19:31:33,988 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 15979 transitions. Word has length 574 [2024-11-18 19:31:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:33,989 INFO L471 AbstractCegarLoop]: Abstraction has 9932 states and 15979 transitions. [2024-11-18 19:31:33,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 15979 transitions. [2024-11-18 19:31:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-18 19:31:34,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:34,005 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:34,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:31:34,005 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:34,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1677198246, now seen corresponding path program 1 times [2024-11-18 19:31:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:34,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070731254] [2024-11-18 19:31:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070731254] [2024-11-18 19:31:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070731254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:34,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:31:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073807167] [2024-11-18 19:31:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:34,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:31:34,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:31:34,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:31:34,475 INFO L87 Difference]: Start difference. First operand 9932 states and 15979 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:36,170 INFO L93 Difference]: Finished difference Result 37729 states and 60461 transitions. [2024-11-18 19:31:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:31:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 576 [2024-11-18 19:31:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:36,308 INFO L225 Difference]: With dead ends: 37729 [2024-11-18 19:31:36,309 INFO L226 Difference]: Without dead ends: 27800 [2024-11-18 19:31:36,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:31:36,345 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 394 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:36,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1776 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:31:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27800 states. [2024-11-18 19:31:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27800 to 11996. [2024-11-18 19:31:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11996 states, 9182 states have (on average 1.5221084730995427) internal successors, (13976), 9272 states have internal predecessors, (13976), 2705 states have call successors, (2705), 108 states have call predecessors, (2705), 108 states have return successors, (2705), 2615 states have call predecessors, (2705), 2705 states have call successors, (2705) [2024-11-18 19:31:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11996 states to 11996 states and 19386 transitions. [2024-11-18 19:31:37,306 INFO L78 Accepts]: Start accepts. Automaton has 11996 states and 19386 transitions. Word has length 576 [2024-11-18 19:31:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:37,307 INFO L471 AbstractCegarLoop]: Abstraction has 11996 states and 19386 transitions. [2024-11-18 19:31:37,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11996 states and 19386 transitions. [2024-11-18 19:31:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-18 19:31:37,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:37,327 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:37,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:31:37,327 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:37,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1800120600, now seen corresponding path program 1 times [2024-11-18 19:31:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:37,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025654330] [2024-11-18 19:31:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:31:38,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025654330] [2024-11-18 19:31:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025654330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429719129] [2024-11-18 19:31:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:38,265 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) [2024-11-18 19:31:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:31:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:38,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 19:31:38,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8307 proven. 117 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 19:31:38,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:31:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:31:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429719129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:31:39,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:31:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-18 19:31:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748702494] [2024-11-18 19:31:39,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:31:39,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 19:31:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 19:31:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-18 19:31:39,547 INFO L87 Difference]: Start difference. First operand 11996 states and 19386 transitions. Second operand has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2024-11-18 19:31:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:43,065 INFO L93 Difference]: Finished difference Result 43555 states and 69758 transitions. [2024-11-18 19:31:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 19:31:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 576 [2024-11-18 19:31:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:43,210 INFO L225 Difference]: With dead ends: 43555 [2024-11-18 19:31:43,210 INFO L226 Difference]: Without dead ends: 31562 [2024-11-18 19:31:43,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1147 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2024-11-18 19:31:43,254 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 716 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:43,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 2700 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 19:31:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31562 states. [2024-11-18 19:31:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31562 to 22498. [2024-11-18 19:31:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22498 states, 16927 states have (on average 1.4999704613930407) internal successors, (25390), 17109 states have internal predecessors, (25390), 5348 states have call successors, (5348), 222 states have call predecessors, (5348), 222 states have return successors, (5348), 5166 states have call predecessors, (5348), 5348 states have call successors, (5348) [2024-11-18 19:31:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22498 states to 22498 states and 36086 transitions. [2024-11-18 19:31:44,969 INFO L78 Accepts]: Start accepts. Automaton has 22498 states and 36086 transitions. Word has length 576 [2024-11-18 19:31:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:44,970 INFO L471 AbstractCegarLoop]: Abstraction has 22498 states and 36086 transitions. [2024-11-18 19:31:44,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2024-11-18 19:31:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 22498 states and 36086 transitions. [2024-11-18 19:31:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-18 19:31:44,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:44,996 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:45,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 19:31:45,197 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 [2024-11-18 19:31:45,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:45,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1862160214, now seen corresponding path program 1 times [2024-11-18 19:31:45,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:45,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952059704] [2024-11-18 19:31:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-18 19:31:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:45,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952059704] [2024-11-18 19:31:45,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952059704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:45,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:45,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:31:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858234401] [2024-11-18 19:31:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:45,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:31:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:31:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:45,448 INFO L87 Difference]: Start difference. First operand 22498 states and 36086 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:49,523 INFO L93 Difference]: Finished difference Result 75079 states and 120260 transitions. [2024-11-18 19:31:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:31:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 576 [2024-11-18 19:31:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:49,724 INFO L225 Difference]: With dead ends: 75079 [2024-11-18 19:31:49,725 INFO L226 Difference]: Without dead ends: 52584 [2024-11-18 19:31:49,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:31:49,785 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 597 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:49,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1151 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:31:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52584 states. [2024-11-18 19:31:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52584 to 47479. [2024-11-18 19:31:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47479 states, 36306 states have (on average 1.4996419324629537) internal successors, (54446), 36671 states have internal predecessors, (54446), 10726 states have call successors, (10726), 446 states have call predecessors, (10726), 446 states have return successors, (10726), 10361 states have call predecessors, (10726), 10726 states have call successors, (10726) [2024-11-18 19:31:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47479 states to 47479 states and 75898 transitions. [2024-11-18 19:31:53,589 INFO L78 Accepts]: Start accepts. Automaton has 47479 states and 75898 transitions. Word has length 576 [2024-11-18 19:31:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:53,591 INFO L471 AbstractCegarLoop]: Abstraction has 47479 states and 75898 transitions. [2024-11-18 19:31:53,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-18 19:31:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 47479 states and 75898 transitions. [2024-11-18 19:31:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-18 19:31:53,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:53,638 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:53,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:31:53,638 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:53,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1749172138, now seen corresponding path program 1 times [2024-11-18 19:31:53,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:53,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645326218] [2024-11-18 19:31:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:53,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 177 proven. 96 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:31:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645326218] [2024-11-18 19:31:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645326218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142852193] [2024-11-18 19:31:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:54,279 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) [2024-11-18 19:31:54,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:31:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:54,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 19:31:54,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 7761 proven. 96 refuted. 0 times theorem prover too weak. 8887 trivial. 0 not checked. [2024-11-18 19:31:55,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:31:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 177 proven. 96 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:31:57,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142852193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:31:57,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:31:57,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2024-11-18 19:31:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299836564] [2024-11-18 19:31:57,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:31:57,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 19:31:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 19:31:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 19:31:57,048 INFO L87 Difference]: Start difference. First operand 47479 states and 75898 transitions. Second operand has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) [2024-11-18 19:32:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:02,997 INFO L93 Difference]: Finished difference Result 119578 states and 191244 transitions. [2024-11-18 19:32:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 19:32:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) Word has length 576 [2024-11-18 19:32:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:03,341 INFO L225 Difference]: With dead ends: 119578 [2024-11-18 19:32:03,342 INFO L226 Difference]: Without dead ends: 72159 [2024-11-18 19:32:03,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1143 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-18 19:32:03,448 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 706 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:03,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2205 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 19:32:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72159 states. [2024-11-18 19:32:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72159 to 38934. [2024-11-18 19:32:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38934 states, 30165 states have (on average 1.5062821150339798) internal successors, (45437), 30450 states have internal predecessors, (45437), 8402 states have call successors, (8402), 366 states have call predecessors, (8402), 366 states have return successors, (8402), 8117 states have call predecessors, (8402), 8402 states have call successors, (8402) [2024-11-18 19:32:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38934 states to 38934 states and 62241 transitions. [2024-11-18 19:32:07,292 INFO L78 Accepts]: Start accepts. Automaton has 38934 states and 62241 transitions. Word has length 576 [2024-11-18 19:32:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:07,293 INFO L471 AbstractCegarLoop]: Abstraction has 38934 states and 62241 transitions. [2024-11-18 19:32:07,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) [2024-11-18 19:32:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 38934 states and 62241 transitions. [2024-11-18 19:32:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-18 19:32:07,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:07,318 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:32:07,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:32:07,519 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 [2024-11-18 19:32:07,520 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:07,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 847814998, now seen corresponding path program 1 times [2024-11-18 19:32:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696831861] [2024-11-18 19:32:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:32:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696831861] [2024-11-18 19:32:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696831861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:32:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749348435] [2024-11-18 19:32:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:08,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:32:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:08,561 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) [2024-11-18 19:32:08,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:32:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:08,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 19:32:08,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:32:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8307 proven. 117 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 19:32:10,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:32:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-18 19:32:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749348435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:32:10,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:32:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 23 [2024-11-18 19:32:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874747921] [2024-11-18 19:32:10,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:32:10,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 19:32:10,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 19:32:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-18 19:32:10,908 INFO L87 Difference]: Start difference. First operand 38934 states and 62241 transitions. Second operand has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 23 states have internal predecessors, (242), 4 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 4 states have call predecessors, (276), 4 states have call successors, (276) [2024-11-18 19:32:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:22,558 INFO L93 Difference]: Finished difference Result 124940 states and 199812 transitions. [2024-11-18 19:32:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-18 19:32:22,560 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 23 states have internal predecessors, (242), 4 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 4 states have call predecessors, (276), 4 states have call successors, (276) Word has length 576 [2024-11-18 19:32:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:22,936 INFO L225 Difference]: With dead ends: 124940 [2024-11-18 19:32:22,936 INFO L226 Difference]: Without dead ends: 86066 [2024-11-18 19:32:23,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1144 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 19:32:23,015 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 2775 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 1536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1536 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:23,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 5300 Invalid, 6388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1536 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-18 19:32:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86066 states.