./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_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 fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 03:17:16,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 03:17:16,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 03:17:16,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 03:17:16,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 03:17:16,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 03:17:16,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 03:17:16,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 03:17:16,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 03:17:16,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 03:17:16,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 03:17:16,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 03:17:16,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 03:17:16,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 03:17:16,436 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 03:17:16,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 03:17:16,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 03:17:16,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 03:17:16,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 03:17:16,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 03:17:16,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 03:17:16,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 03:17:16,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 03:17:16,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 03:17:16,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 03:17:16,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 03:17:16,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 03:17:16,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d [2024-10-13 03:17:16,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 03:17:16,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 03:17:16,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 03:17:16,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 03:17:16,670 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 03:17:16,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i [2024-10-13 03:17:17,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 03:17:18,045 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 03:17:18,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i [2024-10-13 03:17:18,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bcd22cd/632f0af99d8648e49bc3bd8ea539fb6b/FLAGcece7da99 [2024-10-13 03:17:18,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bcd22cd/632f0af99d8648e49bc3bd8ea539fb6b [2024-10-13 03:17:18,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 03:17:18,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 03:17:18,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 03:17:18,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 03:17:18,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 03:17:18,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3563e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18, skipping insertion in model container [2024-10-13 03:17:18,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 03:17:18,263 WARN L248 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_normal_file-59.i[913,926] [2024-10-13 03:17:18,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 03:17:18,311 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 03:17:18,320 WARN L248 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_normal_file-59.i[913,926] [2024-10-13 03:17:18,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 03:17:18,357 INFO L204 MainTranslator]: Completed translation [2024-10-13 03:17:18,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18 WrapperNode [2024-10-13 03:17:18,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 03:17:18,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 03:17:18,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 03:17:18,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 03:17:18,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,409 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2024-10-13 03:17:18,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 03:17:18,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 03:17:18,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 03:17:18,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 03:17:18,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,437 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]. [2024-10-13 03:17:18,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 03:17:18,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 03:17:18,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 03:17:18,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 03:17:18,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (1/1) ... [2024-10-13 03:17:18,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 03:17:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 03:17:18,497 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) [2024-10-13 03:17:18,499 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 [2024-10-13 03:17:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 03:17:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 03:17:18,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 03:17:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 03:17:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 03:17:18,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 03:17:18,593 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 03:17:18,595 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 03:17:18,861 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-10-13 03:17:18,861 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 03:17:18,900 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 03:17:18,900 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 03:17:18,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:17:18 BoogieIcfgContainer [2024-10-13 03:17:18,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 03:17:18,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 03:17:18,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 03:17:18,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 03:17:18,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:17:18" (1/3) ... [2024-10-13 03:17:18,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb3a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:17:18, skipping insertion in model container [2024-10-13 03:17:18,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:17:18" (2/3) ... [2024-10-13 03:17:18,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb3a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:17:18, skipping insertion in model container [2024-10-13 03:17:18,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:17:18" (3/3) ... [2024-10-13 03:17:18,908 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-59.i [2024-10-13 03:17:18,923 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 03:17:18,923 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 03:17:18,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 03:17:18,972 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;@f74a8bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 03:17:18,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 03:17:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-13 03:17:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-13 03:17:18,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 03:17:18,985 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 03:17:18,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 03:17:18,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 03:17:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash -962313202, now seen corresponding path program 1 times [2024-10-13 03:17:18,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 03:17:18,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435768320] [2024-10-13 03:17:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 03:17:18,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 03:17:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 03:17:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 03:17:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-13 03:17:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 03:17:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-13 03:17:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 03:17:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 03:17:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 03:17:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 03:17:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-13 03:17:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-13 03:17:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-13 03:17:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-13 03:17:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-13 03:17:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-13 03:17:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 03:17:19,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435768320] [2024-10-13 03:17:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435768320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 03:17:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 03:17:19,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 03:17:19,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706067291] [2024-10-13 03:17:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 03:17:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 03:17:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 03:17:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 03:17:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 03:17:19,325 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-13 03:17:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 03:17:19,359 INFO L93 Difference]: Finished difference Result 93 states and 160 transitions. [2024-10-13 03:17:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 03:17:19,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2024-10-13 03:17:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 03:17:19,370 INFO L225 Difference]: With dead ends: 93 [2024-10-13 03:17:19,371 INFO L226 Difference]: Without dead ends: 46 [2024-10-13 03:17:19,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 03:17:19,376 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 03:17:19,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 03:17:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-13 03:17:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-13 03:17:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-13 03:17:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 69 transitions. [2024-10-13 03:17:19,406 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 69 transitions. Word has length 91 [2024-10-13 03:17:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 03:17:19,406 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 69 transitions. [2024-10-13 03:17:19,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-13 03:17:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2024-10-13 03:17:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-13 03:17:19,410 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 03:17:19,411 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 03:17:19,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 03:17:19,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 03:17:19,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 03:17:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1652727722, now seen corresponding path program 1 times [2024-10-13 03:17:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 03:17:19,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780985736] [2024-10-13 03:17:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 03:17:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 03:17:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 03:17:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 03:17:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-13 03:17:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 03:17:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-13 03:17:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 03:17:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 03:17:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 03:17:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 03:17:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-13 03:17:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-13 03:17:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-13 03:17:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-13 03:17:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-13 03:17:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-13 03:17:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 03:17:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780985736] [2024-10-13 03:17:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780985736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 03:17:19,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 03:17:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 03:17:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777643991] [2024-10-13 03:17:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 03:17:19,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 03:17:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 03:17:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 03:17:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 03:17:19,830 INFO L87 Difference]: Start difference. First operand 46 states and 69 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-13 03:17:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 03:17:19,942 INFO L93 Difference]: Finished difference Result 137 states and 206 transitions. [2024-10-13 03:17:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 03:17:19,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2024-10-13 03:17:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 03:17:19,945 INFO L225 Difference]: With dead ends: 137 [2024-10-13 03:17:19,947 INFO L226 Difference]: Without dead ends: 92 [2024-10-13 03:17:19,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 03:17:19,949 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 47 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 03:17:19,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 194 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 03:17:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-13 03:17:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2024-10-13 03:17:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-13 03:17:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 110 transitions. [2024-10-13 03:17:19,968 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 110 transitions. Word has length 91 [2024-10-13 03:17:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 03:17:19,968 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 110 transitions. [2024-10-13 03:17:19,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-13 03:17:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 110 transitions. [2024-10-13 03:17:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-13 03:17:19,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 03:17:19,970 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 03:17:19,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 03:17:19,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 03:17:19,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 03:17:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 77792638, now seen corresponding path program 1 times [2024-10-13 03:17:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 03:17:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125660925] [2024-10-13 03:17:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 03:17:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 03:17:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 03:17:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 03:17:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-13 03:17:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 03:17:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-13 03:17:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 03:17:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 03:17:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 03:17:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 03:17:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-13 03:17:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-13 03:17:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-13 03:17:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-13 03:17:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-13 03:17:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-13 03:17:20,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 03:17:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125660925] [2024-10-13 03:17:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125660925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 03:17:20,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 03:17:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 03:17:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645562163] [2024-10-13 03:17:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 03:17:20,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 03:17:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 03:17:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 03:17:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 03:17:20,270 INFO L87 Difference]: Start difference. First operand 74 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-13 03:17:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 03:17:20,389 INFO L93 Difference]: Finished difference Result 173 states and 257 transitions. [2024-10-13 03:17:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 03:17:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 92 [2024-10-13 03:17:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 03:17:20,392 INFO L225 Difference]: With dead ends: 173 [2024-10-13 03:17:20,393 INFO L226 Difference]: Without dead ends: 128 [2024-10-13 03:17:20,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 03:17:20,395 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 61 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 03:17:20,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 191 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 03:17:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-13 03:17:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 117. [2024-10-13 03:17:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 71 states have internal predecessors, (91), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-13 03:17:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 175 transitions. [2024-10-13 03:17:20,423 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 175 transitions. Word has length 92 [2024-10-13 03:17:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 03:17:20,424 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 175 transitions. [2024-10-13 03:17:20,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-13 03:17:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 175 transitions. [2024-10-13 03:17:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-13 03:17:20,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 03:17:20,427 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 03:17:20,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 03:17:20,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 03:17:20,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 03:17:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -234886463, now seen corresponding path program 1 times [2024-10-13 03:17:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 03:17:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705404255] [2024-10-13 03:17:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 03:17:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 03:17:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 03:17:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416570052] [2024-10-13 03:17:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 03:17:20,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 03:17:20,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 03:17:20,558 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) [2024-10-13 03:17:20,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 03:17:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 03:17:20,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-13 03:17:20,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 03:17:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 169 proven. 105 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-13 03:17:22,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 03:17:56,544 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-13 03:18:04,120 WARN L286 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-13 03:18:21,801 WARN L286 SmtUtils]: Spent 14.61s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-13 03:18:34,699 WARN L286 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-13 03:18:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 03:18:52,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705404255] [2024-10-13 03:18:52,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 03:18:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416570052] [2024-10-13 03:18:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416570052] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 03:18:52,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 03:18:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2024-10-13 03:18:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067417208] [2024-10-13 03:18:52,154 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 03:18:52,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 03:18:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 03:18:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 03:18:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 03:18:52,157 INFO L87 Difference]: Start difference. First operand 117 states and 175 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)