./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_fillercodestructure_filler-pe-co_file-59.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 3ee40dd4c738937df3cfe28722079ab6375e7aef2ee40a12cb1af18759ea102b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 14:13:47,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 14:13:47,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 14:13:47,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 14:13:47,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 14:13:47,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 14:13:47,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 14:13:47,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 14:13:47,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 14:13:47,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 14:13:47,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 14:13:47,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 14:13:47,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 14:13:47,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 14:13:47,694 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 14:13:47,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 14:13:47,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 14:13:47,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 14:13:47,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 14:13:47,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 14:13:47,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 14:13:47,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 14:13:47,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 14:13:47,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 14:13:47,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 14:13:47,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 14:13:47,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 14:13:47,702 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 14:13:47,702 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 14:13:47,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 14:13:47,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 14:13:47,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 14:13:47,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 14:13:47,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 14:13:47,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 14:13:47,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 14:13:47,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 14:13:47,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 14:13:47,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 14:13:47,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 14:13:47,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 14:13:47,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 14:13:47,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ee40dd4c738937df3cfe28722079ab6375e7aef2ee40a12cb1af18759ea102b [2024-11-16 14:13:47,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 14:13:47,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 14:13:47,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 14:13:47,977 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 14:13:47,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 14:13:47,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-16 14:13:49,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 14:13:49,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 14:13:49,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-16 14:13:49,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c2bd6b5/cfc024e3d3f240df81b71f1f1335fcec/FLAGbc6923b31 [2024-11-16 14:13:49,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c2bd6b5/cfc024e3d3f240df81b71f1f1335fcec [2024-11-16 14:13:49,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 14:13:49,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 14:13:49,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 14:13:49,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 14:13:49,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 14:13:49,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:13:49" (1/1) ... [2024-11-16 14:13:49,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183ae755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:49, skipping insertion in model container [2024-11-16 14:13:49,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:13:49" (1/1) ... [2024-11-16 14:13:49,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 14:13:49,919 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_fillercodestructure_filler-pe-co_file-59.i[919,932] [2024-11-16 14:13:50,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 14:13:50,039 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 14:13:50,050 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_fillercodestructure_filler-pe-co_file-59.i[919,932] [2024-11-16 14:13:50,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 14:13:50,107 INFO L204 MainTranslator]: Completed translation [2024-11-16 14:13:50,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50 WrapperNode [2024-11-16 14:13:50,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 14:13:50,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 14:13:50,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 14:13:50,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 14:13:50,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,168 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2024-11-16 14:13:50,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 14:13:50,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 14:13:50,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 14:13:50,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 14:13:50,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,214 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]. [2024-11-16 14:13:50,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,227 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 14:13:50,240 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 14:13:50,240 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 14:13:50,240 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 14:13:50,241 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (1/1) ... [2024-11-16 14:13:50,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 14:13:50,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 14:13:50,279 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) [2024-11-16 14:13:50,284 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 [2024-11-16 14:13:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 14:13:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 14:13:50,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 14:13:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 14:13:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 14:13:50,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 14:13:50,449 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 14:13:50,451 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 14:13:50,926 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-16 14:13:50,926 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 14:13:50,955 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 14:13:50,955 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 14:13:50,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:13:50 BoogieIcfgContainer [2024-11-16 14:13:50,955 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 14:13:50,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 14:13:50,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 14:13:50,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 14:13:50,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:13:49" (1/3) ... [2024-11-16 14:13:50,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d645f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:13:50, skipping insertion in model container [2024-11-16 14:13:50,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:13:50" (2/3) ... [2024-11-16 14:13:50,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d645f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:13:50, skipping insertion in model container [2024-11-16 14:13:50,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:13:50" (3/3) ... [2024-11-16 14:13:50,968 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-16 14:13:50,986 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 14:13:50,986 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 14:13:51,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 14:13:51,065 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;@108013db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 14:13:51,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 14:13:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-16 14:13:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 14:13:51,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 14:13:51,083 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 14:13:51,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 14:13:51,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 14:13:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash 687070470, now seen corresponding path program 1 times [2024-11-16 14:13:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 14:13:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793817151] [2024-11-16 14:13:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:51,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 14:13:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 14:13:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 14:13:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 14:13:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 14:13:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 14:13:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 14:13:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-16 14:13:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 14:13:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 14:13:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 14:13:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 14:13:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 14:13:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 14:13:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 14:13:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-16 14:13:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 14:13:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 14:13:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-16 14:13:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 14:13:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-16 14:13:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 14:13:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 14:13:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-16 14:13:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 14:13:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-16 14:13:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-16 14:13:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 14:13:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-16 14:13:51,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 14:13:51,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793817151] [2024-11-16 14:13:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793817151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 14:13:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 14:13:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 14:13:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537738548] [2024-11-16 14:13:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 14:13:51,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 14:13:51,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 14:13:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 14:13:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 14:13:51,670 INFO L87 Difference]: Start difference. First operand has 94 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-16 14:13:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 14:13:51,712 INFO L93 Difference]: Finished difference Result 180 states and 318 transitions. [2024-11-16 14:13:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 14:13:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2024-11-16 14:13:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 14:13:51,723 INFO L225 Difference]: With dead ends: 180 [2024-11-16 14:13:51,723 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 14:13:51,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 14:13:51,733 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 14:13:51,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 14:13:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 14:13:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-16 14:13:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-16 14:13:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2024-11-16 14:13:51,798 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 139 transitions. Word has length 176 [2024-11-16 14:13:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 14:13:51,798 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 139 transitions. [2024-11-16 14:13:51,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-16 14:13:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 139 transitions. [2024-11-16 14:13:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 14:13:51,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 14:13:51,805 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 14:13:51,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 14:13:51,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 14:13:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 14:13:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1610017409, now seen corresponding path program 1 times [2024-11-16 14:13:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 14:13:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562783596] [2024-11-16 14:13:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:51,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 14:13:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 14:13:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 14:13:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 14:13:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 14:13:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 14:13:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 14:13:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-16 14:13:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 14:13:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 14:13:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 14:13:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 14:13:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 14:13:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 14:13:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 14:13:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-16 14:13:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 14:13:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 14:13:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-16 14:13:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 14:13:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-16 14:13:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 14:13:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 14:13:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-16 14:13:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 14:13:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-16 14:13:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-16 14:13:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 14:13:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-16 14:13:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 14:13:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562783596] [2024-11-16 14:13:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562783596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 14:13:52,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 14:13:52,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 14:13:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778228749] [2024-11-16 14:13:52,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 14:13:52,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 14:13:52,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 14:13:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 14:13:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 14:13:52,527 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-16 14:13:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 14:13:52,749 INFO L93 Difference]: Finished difference Result 263 states and 413 transitions. [2024-11-16 14:13:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 14:13:52,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-16 14:13:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 14:13:52,756 INFO L225 Difference]: With dead ends: 263 [2024-11-16 14:13:52,758 INFO L226 Difference]: Without dead ends: 177 [2024-11-16 14:13:52,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 14:13:52,760 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 92 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 14:13:52,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 393 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 14:13:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-16 14:13:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 138. [2024-11-16 14:13:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 81 states have (on average 1.308641975308642) internal successors, (106), 81 states have internal predecessors, (106), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-16 14:13:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 214 transitions. [2024-11-16 14:13:52,807 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 214 transitions. Word has length 176 [2024-11-16 14:13:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 14:13:52,808 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 214 transitions. [2024-11-16 14:13:52,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-16 14:13:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 214 transitions. [2024-11-16 14:13:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 14:13:52,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 14:13:52,813 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 14:13:52,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 14:13:52,814 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 14:13:52,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 14:13:52,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1140189163, now seen corresponding path program 1 times [2024-11-16 14:13:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 14:13:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149165307] [2024-11-16 14:13:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 14:13:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 14:13:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 14:13:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 14:13:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 14:13:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 14:13:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 14:13:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-16 14:13:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 14:13:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 14:13:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 14:13:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 14:13:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 14:13:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 14:13:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 14:13:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-16 14:13:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 14:13:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 14:13:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-16 14:13:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 14:13:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-16 14:13:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 14:13:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 14:13:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-16 14:13:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 14:13:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-16 14:13:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-16 14:13:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 14:13:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-16 14:13:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 14:13:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149165307] [2024-11-16 14:13:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149165307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 14:13:53,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 14:13:53,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 14:13:53,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340584055] [2024-11-16 14:13:53,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 14:13:53,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 14:13:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 14:13:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 14:13:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 14:13:53,328 INFO L87 Difference]: Start difference. First operand 138 states and 214 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-16 14:13:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 14:13:53,574 INFO L93 Difference]: Finished difference Result 340 states and 532 transitions. [2024-11-16 14:13:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 14:13:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-16 14:13:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 14:13:53,579 INFO L225 Difference]: With dead ends: 340 [2024-11-16 14:13:53,579 INFO L226 Difference]: Without dead ends: 254 [2024-11-16 14:13:53,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 14:13:53,584 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 140 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 14:13:53,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 424 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 14:13:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-16 14:13:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2024-11-16 14:13:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 136 states have internal predecessors, (184), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-16 14:13:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 346 transitions. [2024-11-16 14:13:53,638 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 346 transitions. Word has length 177 [2024-11-16 14:13:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 14:13:53,639 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 346 transitions. [2024-11-16 14:13:53,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-16 14:13:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 346 transitions. [2024-11-16 14:13:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-16 14:13:53,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 14:13:53,644 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 14:13:53,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 14:13:53,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 14:13:53,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 14:13:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2042426050, now seen corresponding path program 1 times [2024-11-16 14:13:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 14:13:53,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048137196] [2024-11-16 14:13:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:53,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 14:13:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 14:13:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 14:13:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 14:13:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 14:13:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 14:13:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 14:13:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-16 14:13:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 14:13:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 14:13:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 14:13:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 14:13:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 14:13:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 14:13:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 14:13:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-16 14:13:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 14:13:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 14:13:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-16 14:13:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 14:13:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-16 14:13:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 14:13:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 14:13:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-16 14:13:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 14:13:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-16 14:13:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-16 14:13:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 14:13:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-16 14:13:54,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 14:13:54,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048137196] [2024-11-16 14:13:54,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048137196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 14:13:54,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077935943] [2024-11-16 14:13:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:54,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 14:13:54,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 14:13:54,319 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) [2024-11-16 14:13:54,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 14:13:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:54,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 14:13:54,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 14:13:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2024-11-16 14:13:54,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 14:13:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-16 14:13:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077935943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 14:13:55,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 14:13:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 14:13:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532099067] [2024-11-16 14:13:55,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 14:13:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 14:13:55,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 14:13:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 14:13:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-16 14:13:55,311 INFO L87 Difference]: Start difference. First operand 221 states and 346 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-16 14:13:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 14:13:55,753 INFO L93 Difference]: Finished difference Result 414 states and 635 transitions. [2024-11-16 14:13:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 14:13:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 178 [2024-11-16 14:13:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 14:13:55,758 INFO L225 Difference]: With dead ends: 414 [2024-11-16 14:13:55,758 INFO L226 Difference]: Without dead ends: 245 [2024-11-16 14:13:55,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2024-11-16 14:13:55,760 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 245 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 14:13:55,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 267 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 14:13:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-16 14:13:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 233. [2024-11-16 14:13:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 145 states have (on average 1.303448275862069) internal successors, (189), 145 states have internal predecessors, (189), 81 states have call successors, (81), 6 states have call predecessors, (81), 6 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-16 14:13:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 351 transitions. [2024-11-16 14:13:55,796 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 351 transitions. Word has length 178 [2024-11-16 14:13:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 14:13:55,799 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 351 transitions. [2024-11-16 14:13:55,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-16 14:13:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 351 transitions. [2024-11-16 14:13:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 14:13:55,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 14:13:55,803 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 14:13:55,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 14:13:56,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 14:13:56,005 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 14:13:56,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 14:13:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash -267285063, now seen corresponding path program 1 times [2024-11-16 14:13:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 14:13:56,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054283314] [2024-11-16 14:13:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:56,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 14:13:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 14:13:56,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677552893] [2024-11-16 14:13:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 14:13:56,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 14:13:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 14:13:56,138 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) [2024-11-16 14:13:56,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 14:13:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 14:13:56,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 14:13:56,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 14:13:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 338 proven. 300 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-16 14:13:58,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 14:14:07,362 WARN L286 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-16 14:14:39,854 WARN L286 SmtUtils]: Spent 7.32s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)