./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.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 f0fa134855523ba41b09db07b615548474e6d0ee22f6659fed051b05fa2d243f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:35:26,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:35:26,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:35:26,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:35:26,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:35:26,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:35:26,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:35:26,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:35:26,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:35:26,410 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:35:26,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:35:26,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:35:26,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:35:26,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:35:26,413 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:35:26,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:35:26,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:35:26,414 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:35:26,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:35:26,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:35:26,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:35:26,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:35:26,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:35:26,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:35:26,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:35:26,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:35:26,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:35:26,417 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:35:26,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:35:26,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:35:26,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:35:26,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:35:26,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:35:26,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:35:26,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:35:26,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:35:26,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:35:26,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:35:26,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:35:26,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:35:26,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:35:26,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:35:26,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0fa134855523ba41b09db07b615548474e6d0ee22f6659fed051b05fa2d243f [2024-11-18 20:35:26,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:35:26,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:35:26,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:35:26,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:35:26,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:35:26,693 INFO L431 ainManager$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-52.i [2024-11-18 20:35:28,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:35:28,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:35:28,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i [2024-11-18 20:35:28,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8be9e31/055774e43c3d4f01927717fee4fd29c4/FLAG7c2be43c8 [2024-11-18 20:35:28,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8be9e31/055774e43c3d4f01927717fee4fd29c4 [2024-11-18 20:35:28,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:35:28,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:35:28,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:35:28,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:35:28,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:35:28,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5882c13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28, skipping insertion in model container [2024-11-18 20:35:28,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:35:28,458 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-52.i[919,932] [2024-11-18 20:35:28,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:35:28,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:35:28,554 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-52.i[919,932] [2024-11-18 20:35:28,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:35:28,611 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:35:28,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28 WrapperNode [2024-11-18 20:35:28,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:35:28,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:35:28,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:35:28,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:35:28,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,711 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2024-11-18 20:35:28,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:35:28,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:35:28,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:35:28,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:35:28,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,742 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 20:35:28,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:35:28,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:35:28,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:35:28,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:35:28,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (1/1) ... [2024-11-18 20:35:28,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:35:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:35:28,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 20:35:28,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 20:35:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:35:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:35:28,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:35:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:35:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:35:28,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:35:28,917 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:35:28,919 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:35:29,235 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 20:35:29,235 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:35:29,249 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:35:29,250 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:35:29,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:29 BoogieIcfgContainer [2024-11-18 20:35:29,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:35:29,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:35:29,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:35:29,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:35:29,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:28" (1/3) ... [2024-11-18 20:35:29,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559b826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:29, skipping insertion in model container [2024-11-18 20:35:29,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:28" (2/3) ... [2024-11-18 20:35:29,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559b826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:29, skipping insertion in model container [2024-11-18 20:35:29,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:29" (3/3) ... [2024-11-18 20:35:29,260 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i [2024-11-18 20:35:29,272 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:35:29,273 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:35:29,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:35:29,340 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;@5d1e1a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:35:29,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:35:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 20:35:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 20:35:29,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:29,360 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:29,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:29,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1529496274, now seen corresponding path program 1 times [2024-11-18 20:35:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:29,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258325081] [2024-11-18 20:35:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 20:35:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258325081] [2024-11-18 20:35:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258325081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:35:29,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130441205] [2024-11-18 20:35:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:29,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:35:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:35:29,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:35:29,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:35:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:29,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:35:29,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:35:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 20:35:29,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:35:29,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130441205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:29,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:35:29,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:35:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51699248] [2024-11-18 20:35:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:29,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:35:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:35:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:35:29,952 INFO L87 Difference]: Start difference. First operand has 87 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:35:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:30,043 INFO L93 Difference]: Finished difference Result 167 states and 286 transitions. [2024-11-18 20:35:30,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:35:30,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 152 [2024-11-18 20:35:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:30,057 INFO L225 Difference]: With dead ends: 167 [2024-11-18 20:35:30,057 INFO L226 Difference]: Without dead ends: 83 [2024-11-18 20:35:30,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:35:30,065 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:30,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:35:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-18 20:35:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-18 20:35:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 states have internal predecessors, (84), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 20:35:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 128 transitions. [2024-11-18 20:35:30,102 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 128 transitions. Word has length 152 [2024-11-18 20:35:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:30,102 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 128 transitions. [2024-11-18 20:35:30,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:35:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2024-11-18 20:35:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 20:35:30,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:30,105 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:30,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 20:35:30,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:35:30,306 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:30,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2088658442, now seen corresponding path program 1 times [2024-11-18 20:35:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244689244] [2024-11-18 20:35:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244689244] [2024-11-18 20:35:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244689244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:35:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828210533] [2024-11-18 20:35:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:30,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:35:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:35:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:35:30,759 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:30,815 INFO L93 Difference]: Finished difference Result 243 states and 378 transitions. [2024-11-18 20:35:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:35:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 152 [2024-11-18 20:35:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:30,821 INFO L225 Difference]: With dead ends: 243 [2024-11-18 20:35:30,823 INFO L226 Difference]: Without dead ends: 163 [2024-11-18 20:35:30,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:35:30,824 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 75 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:30,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:35:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-18 20:35:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2024-11-18 20:35:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 114 states have internal predecessors, (163), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 20:35:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 251 transitions. [2024-11-18 20:35:30,871 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 251 transitions. Word has length 152 [2024-11-18 20:35:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:30,872 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 251 transitions. [2024-11-18 20:35:30,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 251 transitions. [2024-11-18 20:35:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 20:35:30,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:30,874 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:30,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:35:30,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:30,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash 311281213, now seen corresponding path program 1 times [2024-11-18 20:35:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032130317] [2024-11-18 20:35:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032130317] [2024-11-18 20:35:37,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032130317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:37,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:37,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 20:35:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885528555] [2024-11-18 20:35:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:37,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 20:35:37,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 20:35:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:35:37,862 INFO L87 Difference]: Start difference. First operand 161 states and 251 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-18 20:35:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:38,628 INFO L93 Difference]: Finished difference Result 537 states and 839 transitions. [2024-11-18 20:35:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 20:35:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 153 [2024-11-18 20:35:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:38,632 INFO L225 Difference]: With dead ends: 537 [2024-11-18 20:35:38,632 INFO L226 Difference]: Without dead ends: 379 [2024-11-18 20:35:38,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:35:38,638 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 413 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:38,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 865 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:35:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-18 20:35:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 233. [2024-11-18 20:35:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 163 states have (on average 1.3987730061349692) internal successors, (228), 163 states have internal predecessors, (228), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:35:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 360 transitions. [2024-11-18 20:35:38,666 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 360 transitions. Word has length 153 [2024-11-18 20:35:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:38,667 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 360 transitions. [2024-11-18 20:35:38,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-18 20:35:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 360 transitions. [2024-11-18 20:35:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 20:35:38,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:38,669 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:38,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:35:38,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:38,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1494157121, now seen corresponding path program 1 times [2024-11-18 20:35:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555145361] [2024-11-18 20:35:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555145361] [2024-11-18 20:35:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555145361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:35:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648825195] [2024-11-18 20:35:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:38,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:35:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:35:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:35:38,763 INFO L87 Difference]: Start difference. First operand 233 states and 360 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:38,882 INFO L93 Difference]: Finished difference Result 553 states and 860 transitions. [2024-11-18 20:35:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:35:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-18 20:35:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:38,886 INFO L225 Difference]: With dead ends: 553 [2024-11-18 20:35:38,886 INFO L226 Difference]: Without dead ends: 386 [2024-11-18 20:35:38,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:35:38,887 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 241 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:38,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 394 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-18 20:35:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 269. [2024-11-18 20:35:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 199 states have (on average 1.4170854271356783) internal successors, (282), 199 states have internal predecessors, (282), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:35:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 414 transitions. [2024-11-18 20:35:38,933 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 414 transitions. Word has length 153 [2024-11-18 20:35:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:38,934 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 414 transitions. [2024-11-18 20:35:38,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 414 transitions. [2024-11-18 20:35:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 20:35:38,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:38,937 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:38,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:35:38,937 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:38,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1968682943, now seen corresponding path program 1 times [2024-11-18 20:35:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859601787] [2024-11-18 20:35:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:38,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859601787] [2024-11-18 20:35:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859601787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:39,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:39,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:35:39,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272540097] [2024-11-18 20:35:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:39,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:35:39,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:35:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:35:39,031 INFO L87 Difference]: Start difference. First operand 269 states and 414 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:39,072 INFO L93 Difference]: Finished difference Result 621 states and 965 transitions. [2024-11-18 20:35:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:35:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-18 20:35:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:39,076 INFO L225 Difference]: With dead ends: 621 [2024-11-18 20:35:39,076 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 20:35:39,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:35:39,077 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 69 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:39,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 289 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:35:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 20:35:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2024-11-18 20:35:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 307 states have (on average 1.4169381107491856) internal successors, (435), 307 states have internal predecessors, (435), 110 states have call successors, (110), 5 states have call predecessors, (110), 5 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-18 20:35:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 655 transitions. [2024-11-18 20:35:39,114 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 655 transitions. Word has length 153 [2024-11-18 20:35:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:39,114 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 655 transitions. [2024-11-18 20:35:39,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 655 transitions. [2024-11-18 20:35:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 20:35:39,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:39,117 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:39,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:35:39,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:39,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -520846019, now seen corresponding path program 1 times [2024-11-18 20:35:39,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:39,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779812047] [2024-11-18 20:35:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779812047] [2024-11-18 20:35:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779812047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:39,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:35:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427809478] [2024-11-18 20:35:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:39,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:35:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:35:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:39,237 INFO L87 Difference]: Start difference. First operand 423 states and 655 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:39,403 INFO L93 Difference]: Finished difference Result 774 states and 1203 transitions. [2024-11-18 20:35:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:35:39,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-18 20:35:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:39,408 INFO L225 Difference]: With dead ends: 774 [2024-11-18 20:35:39,409 INFO L226 Difference]: Without dead ends: 580 [2024-11-18 20:35:39,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:35:39,411 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 186 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:39,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 591 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-18 20:35:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 575. [2024-11-18 20:35:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 413 states have (on average 1.4092009685230025) internal successors, (582), 413 states have internal predecessors, (582), 154 states have call successors, (154), 7 states have call predecessors, (154), 7 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 20:35:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 890 transitions. [2024-11-18 20:35:39,470 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 890 transitions. Word has length 153 [2024-11-18 20:35:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:39,471 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 890 transitions. [2024-11-18 20:35:39,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 890 transitions. [2024-11-18 20:35:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 20:35:39,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:39,473 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:39,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:35:39,473 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:39,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash 373320827, now seen corresponding path program 1 times [2024-11-18 20:35:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212857535] [2024-11-18 20:35:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212857535] [2024-11-18 20:35:39,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212857535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:39,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:39,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:35:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951912624] [2024-11-18 20:35:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:39,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:35:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:35:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:39,579 INFO L87 Difference]: Start difference. First operand 575 states and 890 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:39,713 INFO L93 Difference]: Finished difference Result 1075 states and 1669 transitions. [2024-11-18 20:35:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:35:39,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-18 20:35:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:39,716 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 20:35:39,716 INFO L226 Difference]: Without dead ends: 575 [2024-11-18 20:35:39,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:35:39,718 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 148 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:39,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 192 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-18 20:35:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-11-18 20:35:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 413 states have (on average 1.3922518159806296) internal successors, (575), 413 states have internal predecessors, (575), 154 states have call successors, (154), 7 states have call predecessors, (154), 7 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 20:35:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 883 transitions. [2024-11-18 20:35:39,760 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 883 transitions. Word has length 153 [2024-11-18 20:35:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:39,760 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 883 transitions. [2024-11-18 20:35:39,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 883 transitions. [2024-11-18 20:35:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 20:35:39,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:39,762 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:39,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:35:39,762 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:39,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1408442812, now seen corresponding path program 1 times [2024-11-18 20:35:39,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:39,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634925453] [2024-11-18 20:35:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:39,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634925453] [2024-11-18 20:35:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634925453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:40,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:35:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365479055] [2024-11-18 20:35:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:40,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:35:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:35:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:40,125 INFO L87 Difference]: Start difference. First operand 575 states and 883 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:40,256 INFO L93 Difference]: Finished difference Result 1386 states and 2095 transitions. [2024-11-18 20:35:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:35:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 154 [2024-11-18 20:35:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:40,260 INFO L225 Difference]: With dead ends: 1386 [2024-11-18 20:35:40,261 INFO L226 Difference]: Without dead ends: 867 [2024-11-18 20:35:40,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:40,262 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 178 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:40,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 274 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-18 20:35:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 723. [2024-11-18 20:35:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.3826714801444044) internal successors, (766), 554 states have internal predecessors, (766), 154 states have call successors, (154), 14 states have call predecessors, (154), 14 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 20:35:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1074 transitions. [2024-11-18 20:35:40,307 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1074 transitions. Word has length 154 [2024-11-18 20:35:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:40,307 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1074 transitions. [2024-11-18 20:35:40,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1074 transitions. [2024-11-18 20:35:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 20:35:40,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:40,309 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:40,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:35:40,309 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:40,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1382302396, now seen corresponding path program 1 times [2024-11-18 20:35:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721537086] [2024-11-18 20:35:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:40,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721537086] [2024-11-18 20:35:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721537086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:40,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:35:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134245210] [2024-11-18 20:35:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:40,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:35:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:35:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:35:40,438 INFO L87 Difference]: Start difference. First operand 723 states and 1074 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:40,568 INFO L93 Difference]: Finished difference Result 1184 states and 1760 transitions. [2024-11-18 20:35:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:35:40,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 154 [2024-11-18 20:35:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:40,572 INFO L225 Difference]: With dead ends: 1184 [2024-11-18 20:35:40,572 INFO L226 Difference]: Without dead ends: 512 [2024-11-18 20:35:40,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:40,574 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 184 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:40,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 385 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-18 20:35:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 341. [2024-11-18 20:35:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 268 states have (on average 1.3694029850746268) internal successors, (367), 268 states have internal predecessors, (367), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:35:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 499 transitions. [2024-11-18 20:35:40,595 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 499 transitions. Word has length 154 [2024-11-18 20:35:40,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:40,596 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 499 transitions. [2024-11-18 20:35:40,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 499 transitions. [2024-11-18 20:35:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 20:35:40,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:40,597 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:40,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:35:40,597 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:40,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1516315902, now seen corresponding path program 1 times [2024-11-18 20:35:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:40,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627241503] [2024-11-18 20:35:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:40,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627241503] [2024-11-18 20:35:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627241503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:40,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:35:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227736100] [2024-11-18 20:35:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:40,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:35:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:35:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:40,934 INFO L87 Difference]: Start difference. First operand 341 states and 499 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:41,060 INFO L93 Difference]: Finished difference Result 666 states and 970 transitions. [2024-11-18 20:35:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:35:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 154 [2024-11-18 20:35:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:41,063 INFO L225 Difference]: With dead ends: 666 [2024-11-18 20:35:41,063 INFO L226 Difference]: Without dead ends: 376 [2024-11-18 20:35:41,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:35:41,064 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 142 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:41,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:35:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-18 20:35:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 335. [2024-11-18 20:35:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.3473282442748091) internal successors, (353), 262 states have internal predecessors, (353), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:35:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 485 transitions. [2024-11-18 20:35:41,085 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 485 transitions. Word has length 154 [2024-11-18 20:35:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:41,085 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 485 transitions. [2024-11-18 20:35:41,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 485 transitions. [2024-11-18 20:35:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 20:35:41,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:41,087 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:41,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:35:41,087 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:41,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1803152235, now seen corresponding path program 1 times [2024-11-18 20:35:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164142880] [2024-11-18 20:35:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:35:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164142880] [2024-11-18 20:35:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164142880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 20:35:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511260037] [2024-11-18 20:35:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:41,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 20:35:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 20:35:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:35:41,440 INFO L87 Difference]: Start difference. First operand 335 states and 485 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:41,900 INFO L93 Difference]: Finished difference Result 825 states and 1190 transitions. [2024-11-18 20:35:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:35:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 155 [2024-11-18 20:35:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:41,905 INFO L225 Difference]: With dead ends: 825 [2024-11-18 20:35:41,905 INFO L226 Difference]: Without dead ends: 541 [2024-11-18 20:35:41,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:35:41,907 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 299 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:41,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 727 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:35:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-18 20:35:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 369. [2024-11-18 20:35:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 296 states have internal predecessors, (398), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:35:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 530 transitions. [2024-11-18 20:35:41,960 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 530 transitions. Word has length 155 [2024-11-18 20:35:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:41,961 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 530 transitions. [2024-11-18 20:35:41,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:35:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 530 transitions. [2024-11-18 20:35:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 20:35:41,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:41,962 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:41,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:35:41,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:41,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -28144873, now seen corresponding path program 1 times [2024-11-18 20:35:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143169328] [2024-11-18 20:35:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat