./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.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-39.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 8b0d381d265ef579b87dc204e4bf201472b6c1640922289c165a4e9815d5548b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:31:24,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:31:24,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:31:24,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:31:24,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:31:24,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:31:24,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:31:24,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:31:24,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:31:24,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:31:24,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:31:24,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:31:24,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:31:24,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:31:24,499 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:31:24,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:31:24,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:31:24,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:31:24,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:31:24,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:31:24,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:31:24,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:31:24,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:31:24,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:31:24,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:31:24,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:31:24,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:31:24,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:31:24,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:31:24,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:31:24,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:31:24,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:31:24,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:31:24,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:31:24,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:31:24,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:31:24,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:31:24,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:31:24,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:31:24,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:31:24,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:31:24,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:31:24,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0d381d265ef579b87dc204e4bf201472b6c1640922289c165a4e9815d5548b [2024-11-18 19:31:24,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:31:24,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:31:24,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:31:24,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:31:24,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:31:24,805 INFO L431 ainManager$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-39.i [2024-11-18 19:31:26,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:31:26,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:31:26,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i [2024-11-18 19:31:26,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76efb9d1/a6c15ee26ff74a69ad88dc2b6d1174ba/FLAGc503004a5 [2024-11-18 19:31:26,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76efb9d1/a6c15ee26ff74a69ad88dc2b6d1174ba [2024-11-18 19:31:26,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:31:26,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:31:26,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:26,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:31:26,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:31:26,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:26" (1/1) ... [2024-11-18 19:31:26,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72120510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26, skipping insertion in model container [2024-11-18 19:31:26,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:26" (1/1) ... [2024-11-18 19:31:27,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:31:27,195 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-39.i[916,929] [2024-11-18 19:31:27,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:27,392 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:31:27,406 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-39.i[916,929] [2024-11-18 19:31:27,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:27,526 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:31:27,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27 WrapperNode [2024-11-18 19:31:27,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:27,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:27,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:31:27,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:31:27,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,636 INFO L138 Inliner]: procedures = 26, calls = 88, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 554 [2024-11-18 19:31:27,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:27,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:31:27,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:31:27,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:31:27,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,716 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 19:31:27,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:31:27,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:31:27,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:31:27,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:31:27,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (1/1) ... [2024-11-18 19:31:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:31:27,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:27,901 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 19:31:27,907 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 19:31:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:31:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:31:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:31:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:31:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:31:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:31:28,084 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:31:28,086 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:31:28,986 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 19:31:28,987 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:31:29,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:31:29,021 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:31:29,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:29 BoogieIcfgContainer [2024-11-18 19:31:29,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:31:29,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:31:29,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:31:29,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:31:29,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:26" (1/3) ... [2024-11-18 19:31:29,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7334e305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:29, skipping insertion in model container [2024-11-18 19:31:29,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:27" (2/3) ... [2024-11-18 19:31:29,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7334e305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:29, skipping insertion in model container [2024-11-18 19:31:29,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:29" (3/3) ... [2024-11-18 19:31:29,029 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-39.i [2024-11-18 19:31:29,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:31:29,048 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:31:29,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:31:29,167 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;@1d05a390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:31:29,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:31:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 153 states have (on average 1.522875816993464) internal successors, (233), 154 states have internal predecessors, (233), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 19:31:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:31:29,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:29,217 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:29,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:29,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -473726290, now seen corresponding path program 1 times [2024-11-18 19:31:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656919753] [2024-11-18 19:31:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-18 19:31:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656919753] [2024-11-18 19:31:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656919753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642168077] [2024-11-18 19:31:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:29,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:29,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:29,880 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 19:31:29,881 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 19:31:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:30,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:31:30,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-18 19:31:30,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:31:30,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642168077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:30,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:31:30,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:31:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973306621] [2024-11-18 19:31:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:30,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:31:30,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:31:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:31:30,356 INFO L87 Difference]: Start difference. First operand has 231 states, 153 states have (on average 1.522875816993464) internal successors, (233), 154 states have internal predecessors, (233), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:31:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:30,419 INFO L93 Difference]: Finished difference Result 455 states and 835 transitions. [2024-11-18 19:31:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:31:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) Word has length 476 [2024-11-18 19:31:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:30,430 INFO L225 Difference]: With dead ends: 455 [2024-11-18 19:31:30,431 INFO L226 Difference]: Without dead ends: 227 [2024-11-18 19:31:30,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 477 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 19:31:30,442 INFO L432 NwaCegarLoop]: 375 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, 375 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 19:31:30,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-18 19:31:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-18 19:31:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 150 states have (on average 1.5) internal successors, (225), 150 states have internal predecessors, (225), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 19:31:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 375 transitions. [2024-11-18 19:31:30,515 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 375 transitions. Word has length 476 [2024-11-18 19:31:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:30,516 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 375 transitions. [2024-11-18 19:31:30,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:31:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 375 transitions. [2024-11-18 19:31:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:31:30,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:30,526 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:30,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:31:30,727 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 19:31:30,728 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:30,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:30,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1828495592, now seen corresponding path program 1 times [2024-11-18 19:31:30,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:30,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981302557] [2024-11-18 19:31:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:30,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981302557] [2024-11-18 19:31:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981302557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086210227] [2024-11-18 19:31:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:31,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:31,174 INFO L87 Difference]: Start difference. First operand 227 states and 375 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:31,265 INFO L93 Difference]: Finished difference Result 581 states and 964 transitions. [2024-11-18 19:31:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-18 19:31:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:31,274 INFO L225 Difference]: With dead ends: 581 [2024-11-18 19:31:31,276 INFO L226 Difference]: Without dead ends: 357 [2024-11-18 19:31:31,279 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 19:31:31,281 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 207 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:31,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 780 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:31,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-18 19:31:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2024-11-18 19:31:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 260 states have (on average 1.5538461538461539) internal successors, (404), 261 states have internal predecessors, (404), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 19:31:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 586 transitions. [2024-11-18 19:31:31,348 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 586 transitions. Word has length 476 [2024-11-18 19:31:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:31,350 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 586 transitions. [2024-11-18 19:31:31,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 586 transitions. [2024-11-18 19:31:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:31:31,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:31,363 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:31,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:31:31,364 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:31,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1364025958, now seen corresponding path program 1 times [2024-11-18 19:31:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213878162] [2024-11-18 19:31:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213878162] [2024-11-18 19:31:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213878162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:31,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3661403] [2024-11-18 19:31:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:31,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:31,708 INFO L87 Difference]: Start difference. First operand 354 states and 586 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:31,780 INFO L93 Difference]: Finished difference Result 951 states and 1570 transitions. [2024-11-18 19:31:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-18 19:31:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:31,795 INFO L225 Difference]: With dead ends: 951 [2024-11-18 19:31:31,795 INFO L226 Difference]: Without dead ends: 600 [2024-11-18 19:31:31,797 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 19:31:31,800 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 233 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:31,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 838 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-18 19:31:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 597. [2024-11-18 19:31:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 440 states have (on average 1.5386363636363636) internal successors, (677), 443 states have internal predecessors, (677), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-18 19:31:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 981 transitions. [2024-11-18 19:31:31,874 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 981 transitions. Word has length 476 [2024-11-18 19:31:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:31,876 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 981 transitions. [2024-11-18 19:31:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 981 transitions. [2024-11-18 19:31:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:31:31,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:31,887 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:31,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:31:31,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:31,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1504574568, now seen corresponding path program 1 times [2024-11-18 19:31:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:31,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621748998] [2024-11-18 19:31:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621748998] [2024-11-18 19:31:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621748998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738344709] [2024-11-18 19:31:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:32,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:32,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:32,319 INFO L87 Difference]: Start difference. First operand 597 states and 981 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:32,364 INFO L93 Difference]: Finished difference Result 1195 states and 1967 transitions. [2024-11-18 19:31:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:32,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-18 19:31:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:32,375 INFO L225 Difference]: With dead ends: 1195 [2024-11-18 19:31:32,375 INFO L226 Difference]: Without dead ends: 601 [2024-11-18 19:31:32,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:32,378 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:32,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-18 19:31:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2024-11-18 19:31:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 444 states have (on average 1.5337837837837838) internal successors, (681), 447 states have internal predecessors, (681), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-18 19:31:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 985 transitions. [2024-11-18 19:31:32,439 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 985 transitions. Word has length 476 [2024-11-18 19:31:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:32,442 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 985 transitions. [2024-11-18 19:31:32,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 985 transitions. [2024-11-18 19:31:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-18 19:31:32,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:32,453 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:32,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:31:32,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:32,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2094755999, now seen corresponding path program 1 times [2024-11-18 19:31:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354437229] [2024-11-18 19:31:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354437229] [2024-11-18 19:31:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354437229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046892184] [2024-11-18 19:31:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:32,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:32,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:32,946 INFO L87 Difference]: Start difference. First operand 601 states and 985 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:32,985 INFO L93 Difference]: Finished difference Result 1201 states and 1971 transitions. [2024-11-18 19:31:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 477 [2024-11-18 19:31:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:32,991 INFO L225 Difference]: With dead ends: 1201 [2024-11-18 19:31:32,992 INFO L226 Difference]: Without dead ends: 603 [2024-11-18 19:31:32,994 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 19:31:32,995 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:32,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-18 19:31:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-11-18 19:31:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 446 states have (on average 1.531390134529148) internal successors, (683), 449 states have internal predecessors, (683), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-18 19:31:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 987 transitions. [2024-11-18 19:31:33,043 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 987 transitions. Word has length 477 [2024-11-18 19:31:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:33,044 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 987 transitions. [2024-11-18 19:31:33,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 987 transitions. [2024-11-18 19:31:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-18 19:31:33,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:33,053 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:33,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:31:33,053 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:33,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash -902482597, now seen corresponding path program 1 times [2024-11-18 19:31:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107294280] [2024-11-18 19:31:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107294280] [2024-11-18 19:31:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107294280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179283650] [2024-11-18 19:31:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:33,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:33,763 INFO L87 Difference]: Start difference. First operand 603 states and 987 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:33,891 INFO L93 Difference]: Finished difference Result 1803 states and 2955 transitions. [2024-11-18 19:31:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 478 [2024-11-18 19:31:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:33,903 INFO L225 Difference]: With dead ends: 1803 [2024-11-18 19:31:33,903 INFO L226 Difference]: Without dead ends: 1203 [2024-11-18 19:31:33,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:33,908 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 226 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:33,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 718 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-18 19:31:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1199. [2024-11-18 19:31:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 886 states have (on average 1.528216704288939) internal successors, (1354), 892 states have internal predecessors, (1354), 304 states have call successors, (304), 8 states have call predecessors, (304), 8 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2024-11-18 19:31:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1962 transitions. [2024-11-18 19:31:34,045 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1962 transitions. Word has length 478 [2024-11-18 19:31:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:34,046 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1962 transitions. [2024-11-18 19:31:34,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1962 transitions. [2024-11-18 19:31:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-18 19:31:34,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:34,055 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:34,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:31:34,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:34,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 150334018, now seen corresponding path program 1 times [2024-11-18 19:31:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166546055] [2024-11-18 19:31:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-18 19:31:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166546055] [2024-11-18 19:31:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166546055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663006107] [2024-11-18 19:31:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:35,846 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 19:31:35,848 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 19:31:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:36,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 19:31:36,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 4974 proven. 72 refuted. 0 times theorem prover too weak. 6054 trivial. 0 not checked. [2024-11-18 19:31:37,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:31:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-18 19:31:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663006107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:31:38,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:31:38,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2024-11-18 19:31:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236474254] [2024-11-18 19:31:38,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:31:38,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 19:31:38,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 19:31:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-18 19:31:38,488 INFO L87 Difference]: Start difference. First operand 1199 states and 1962 transitions. Second operand has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) [2024-11-18 19:31:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:42,274 INFO L93 Difference]: Finished difference Result 7775 states and 12609 transitions. [2024-11-18 19:31:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 19:31:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) Word has length 479 [2024-11-18 19:31:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:42,321 INFO L225 Difference]: With dead ends: 7775 [2024-11-18 19:31:42,322 INFO L226 Difference]: Without dead ends: 6579 [2024-11-18 19:31:42,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2024-11-18 19:31:42,331 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 1696 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:42,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 3116 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 19:31:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2024-11-18 19:31:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 4699. [2024-11-18 19:31:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 3393 states have (on average 1.496610669024462) internal successors, (5078), 3424 states have internal predecessors, (5078), 1268 states have call successors, (1268), 37 states have call predecessors, (1268), 37 states have return successors, (1268), 1237 states have call predecessors, (1268), 1268 states have call successors, (1268) [2024-11-18 19:31:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 7614 transitions. [2024-11-18 19:31:42,903 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 7614 transitions. Word has length 479 [2024-11-18 19:31:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:42,904 INFO L471 AbstractCegarLoop]: Abstraction has 4699 states and 7614 transitions. [2024-11-18 19:31:42,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) [2024-11-18 19:31:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 7614 transitions. [2024-11-18 19:31:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-18 19:31:42,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:42,912 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:42,937 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 19:31:43,113 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,SelfDestructingSolverStorable6 [2024-11-18 19:31:43,113 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:43,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1593618742, now seen corresponding path program 1 times [2024-11-18 19:31:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622535334] [2024-11-18 19:31:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622535334] [2024-11-18 19:31:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622535334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:43,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:31:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001395826] [2024-11-18 19:31:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:43,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:31:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:43,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:31:43,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:43,709 INFO L87 Difference]: Start difference. First operand 4699 states and 7614 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:44,595 INFO L93 Difference]: Finished difference Result 13501 states and 21882 transitions. [2024-11-18 19:31:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:31:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 479 [2024-11-18 19:31:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:44,675 INFO L225 Difference]: With dead ends: 13501 [2024-11-18 19:31:44,675 INFO L226 Difference]: Without dead ends: 9405 [2024-11-18 19:31:44,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:44,701 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 247 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:44,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 923 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:31:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2024-11-18 19:31:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9403. [2024-11-18 19:31:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6792 states have (on average 1.4961719670200235) internal successors, (10162), 6854 states have internal predecessors, (10162), 2536 states have call successors, (2536), 74 states have call predecessors, (2536), 74 states have return successors, (2536), 2474 states have call predecessors, (2536), 2536 states have call successors, (2536) [2024-11-18 19:31:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 15234 transitions. [2024-11-18 19:31:45,840 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 15234 transitions. Word has length 479 [2024-11-18 19:31:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:45,841 INFO L471 AbstractCegarLoop]: Abstraction has 9403 states and 15234 transitions. [2024-11-18 19:31:45,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 15234 transitions. [2024-11-18 19:31:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-18 19:31:45,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:45,853 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:45,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:31:45,854 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:45,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1210246887, now seen corresponding path program 1 times [2024-11-18 19:31:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099845207] [2024-11-18 19:31:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:31:46,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099845207] [2024-11-18 19:31:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099845207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:46,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:46,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:31:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554563364] [2024-11-18 19:31:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:46,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:31:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:31:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:31:46,444 INFO L87 Difference]: Start difference. First operand 9403 states and 15234 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:47,459 INFO L93 Difference]: Finished difference Result 17613 states and 28536 transitions. [2024-11-18 19:31:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:31:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 480 [2024-11-18 19:31:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:47,541 INFO L225 Difference]: With dead ends: 17613 [2024-11-18 19:31:47,542 INFO L226 Difference]: Without dead ends: 9415 [2024-11-18 19:31:47,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:47,574 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 246 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:47,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 936 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:31:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2024-11-18 19:31:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 9403. [2024-11-18 19:31:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6792 states have (on average 1.4961719670200235) internal successors, (10162), 6854 states have internal predecessors, (10162), 2536 states have call successors, (2536), 74 states have call predecessors, (2536), 74 states have return successors, (2536), 2474 states have call predecessors, (2536), 2536 states have call successors, (2536) [2024-11-18 19:31:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 15234 transitions. [2024-11-18 19:31:48,444 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 15234 transitions. Word has length 480 [2024-11-18 19:31:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:48,445 INFO L471 AbstractCegarLoop]: Abstraction has 9403 states and 15234 transitions. [2024-11-18 19:31:48,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:31:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 15234 transitions. [2024-11-18 19:31:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-18 19:31:48,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:48,460 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:48,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:31:48,460 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -207977653, now seen corresponding path program 1 times [2024-11-18 19:31:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605103691] [2024-11-18 19:31:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:31:48,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543278790] [2024-11-18 19:31:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:48,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:48,994 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 19:31:48,999 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 19:31:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:49,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 19:31:49,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 2972 proven. 33 refuted. 0 times theorem prover too weak. 8095 trivial. 0 not checked. [2024-11-18 19:31:50,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:31:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:50,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605103691] [2024-11-18 19:31:50,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:31:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543278790] [2024-11-18 19:31:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543278790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:50,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:31:50,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-18 19:31:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681687455] [2024-11-18 19:31:50,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:31:50,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:31:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:31:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:31:50,991 INFO L87 Difference]: Start difference. First operand 9403 states and 15234 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:31:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:52,964 INFO L93 Difference]: Finished difference Result 28387 states and 45870 transitions. [2024-11-18 19:31:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:31:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 480 [2024-11-18 19:31:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:53,091 INFO L225 Difference]: With dead ends: 28387 [2024-11-18 19:31:53,092 INFO L226 Difference]: Without dead ends: 18987 [2024-11-18 19:31:53,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-18 19:31:53,155 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 405 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:53,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1254 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:31:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18987 states. [2024-11-18 19:31:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18987 to 18841. [2024-11-18 19:31:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18841 states, 13610 states have (on average 1.4911094783247612) internal successors, (20294), 13734 states have internal predecessors, (20294), 5072 states have call successors, (5072), 158 states have call predecessors, (5072), 158 states have return successors, (5072), 4948 states have call predecessors, (5072), 5072 states have call successors, (5072) [2024-11-18 19:31:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18841 states to 18841 states and 30438 transitions. [2024-11-18 19:31:55,328 INFO L78 Accepts]: Start accepts. Automaton has 18841 states and 30438 transitions. Word has length 480 [2024-11-18 19:31:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:55,330 INFO L471 AbstractCegarLoop]: Abstraction has 18841 states and 30438 transitions. [2024-11-18 19:31:55,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:31:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18841 states and 30438 transitions. [2024-11-18 19:31:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-18 19:31:55,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:55,347 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:55,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 19:31:55,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:55,549 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:55,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2067258455, now seen corresponding path program 1 times [2024-11-18 19:31:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:55,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360378117] [2024-11-18 19:31:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:55,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:31:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517726203] [2024-11-18 19:31:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:55,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:55,973 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 19:31:55,974 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 19:31:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:56,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 19:31:56,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 6835 proven. 315 refuted. 0 times theorem prover too weak. 3950 trivial. 0 not checked. [2024-11-18 19:31:59,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:32:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360378117] [2024-11-18 19:32:02,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:32:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517726203] [2024-11-18 19:32:02,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517726203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:32:02,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:32:02,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-18 19:32:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897087224] [2024-11-18 19:32:02,557 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:32:02,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 19:32:02,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 19:32:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 19:32:02,560 INFO L87 Difference]: Start difference. First operand 18841 states and 30438 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2024-11-18 19:32:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:11,690 INFO L93 Difference]: Finished difference Result 76925 states and 122356 transitions. [2024-11-18 19:32:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-18 19:32:11,691 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) Word has length 481 [2024-11-18 19:32:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:11,953 INFO L225 Difference]: With dead ends: 76925 [2024-11-18 19:32:11,954 INFO L226 Difference]: Without dead ends: 58087 [2024-11-18 19:32:12,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1466, Invalid=5014, Unknown=0, NotChecked=0, Total=6480 [2024-11-18 19:32:12,047 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 2609 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:12,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 2597 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-18 19:32:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58087 states. [2024-11-18 19:32:15,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58087 to 32824. [2024-11-18 19:32:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32824 states, 25592 states have (on average 1.5229759299781183) internal successors, (38976), 25822 states have internal predecessors, (38976), 6873 states have call successors, (6873), 358 states have call predecessors, (6873), 358 states have return successors, (6873), 6643 states have call predecessors, (6873), 6873 states have call successors, (6873) [2024-11-18 19:32:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32824 states to 32824 states and 52722 transitions. [2024-11-18 19:32:15,713 INFO L78 Accepts]: Start accepts. Automaton has 32824 states and 52722 transitions. Word has length 481 [2024-11-18 19:32:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:15,714 INFO L471 AbstractCegarLoop]: Abstraction has 32824 states and 52722 transitions. [2024-11-18 19:32:15,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2024-11-18 19:32:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 32824 states and 52722 transitions. [2024-11-18 19:32:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-18 19:32:15,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:15,744 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:15,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 19:32:15,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:32:15,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:15,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1994801401, now seen corresponding path program 1 times [2024-11-18 19:32:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:15,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384573998] [2024-11-18 19:32:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:32:16,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973370040] [2024-11-18 19:32:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:16,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:32:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:16,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:32:16,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 19:32:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:16,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 19:32:17,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:32:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 8328 proven. 429 refuted. 0 times theorem prover too weak. 2343 trivial. 0 not checked. [2024-11-18 19:32:21,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:32:24,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384573998] [2024-11-18 19:32:24,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:32:24,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973370040] [2024-11-18 19:32:24,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973370040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:32:24,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:32:24,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2024-11-18 19:32:24,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438984024] [2024-11-18 19:32:24,883 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:32:24,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 19:32:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 19:32:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1187, Unknown=6, NotChecked=0, Total=1406 [2024-11-18 19:32:24,886 INFO L87 Difference]: Start difference. First operand 32824 states and 52722 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 27 states have internal predecessors, (139), 7 states have call successors, (75), 7 states have call predecessors, (75), 11 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75)