./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.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-pr-co_file-34.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 68ec8a45185640c14efe48000e9f98891ce6fe2387f90662afdebba9912124a6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:06:04,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:06:04,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:06:04,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:06:04,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:06:04,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:06:04,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:06:04,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:06:04,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:06:04,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:06:04,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:06:04,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:06:04,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:06:04,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:06:04,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:06:04,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:06:04,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:06:04,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:06:04,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:06:04,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:06:04,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:06:04,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:06:04,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:06:04,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:06:04,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:06:04,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:06:04,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:06:04,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:06:04,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:06:04,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:06:04,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:06:04,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:06:04,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:06:04,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:06:04,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:06:04,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:06:04,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:06:04,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:06:04,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:06:04,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:06:04,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:06:04,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:06:04,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec8a45185640c14efe48000e9f98891ce6fe2387f90662afdebba9912124a6 [2024-11-18 21:06:05,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:06:05,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:06:05,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:06:05,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:06:05,041 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:06:05,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2024-11-18 21:06:06,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:06:06,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:06:06,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2024-11-18 21:06:06,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f1a6650/235d1f725004495886056f607497ed05/FLAG0ef9907f3 [2024-11-18 21:06:07,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f1a6650/235d1f725004495886056f607497ed05 [2024-11-18 21:06:07,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:06:07,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:06:07,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:06:07,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:06:07,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:06:07,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af42dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07, skipping insertion in model container [2024-11-18 21:06:07,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:06:07,308 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-pr-co_file-34.i[919,932] [2024-11-18 21:06:07,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:06:07,389 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:06:07,401 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-pr-co_file-34.i[919,932] [2024-11-18 21:06:07,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:06:07,476 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:06:07,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07 WrapperNode [2024-11-18 21:06:07,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:06:07,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:06:07,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:06:07,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:06:07,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,548 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2024-11-18 21:06:07,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:06:07,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:06:07,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:06:07,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:06:07,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,594 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 21:06:07,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:06:07,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:06:07,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:06:07,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:06:07,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (1/1) ... [2024-11-18 21:06:07,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:06:07,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:06:07,682 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 21:06:07,687 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 21:06:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:06:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:06:07,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:06:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:06:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:06:07,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:06:07,846 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:06:07,847 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:06:08,345 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-18 21:06:08,346 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:06:08,360 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:06:08,360 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:06:08,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:06:08 BoogieIcfgContainer [2024-11-18 21:06:08,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:06:08,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:06:08,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:06:08,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:06:08,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:06:07" (1/3) ... [2024-11-18 21:06:08,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc94954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:06:08, skipping insertion in model container [2024-11-18 21:06:08,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:07" (2/3) ... [2024-11-18 21:06:08,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc94954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:06:08, skipping insertion in model container [2024-11-18 21:06:08,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:06:08" (3/3) ... [2024-11-18 21:06:08,370 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2024-11-18 21:06:08,383 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:06:08,384 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:06:08,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:06:08,488 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;@82a2aa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:06:08,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:06:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:06:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 21:06:08,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:08,516 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:08,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:08,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1611331877, now seen corresponding path program 1 times [2024-11-18 21:06:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497447202] [2024-11-18 21:06:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-18 21:06:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497447202] [2024-11-18 21:06:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497447202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:06:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441573156] [2024-11-18 21:06:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:08,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:06:08,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:06:08,936 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 21:06:08,938 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 21:06:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:09,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:06:09,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:06:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-18 21:06:09,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:06:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441573156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:06:09,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:06:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184460732] [2024-11-18 21:06:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:09,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:06:09,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:06:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:06:09,262 INFO L87 Difference]: Start difference. First operand has 103 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 21:06:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:09,302 INFO L93 Difference]: Finished difference Result 199 states and 347 transitions. [2024-11-18 21:06:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:06:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 179 [2024-11-18 21:06:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:09,314 INFO L225 Difference]: With dead ends: 199 [2024-11-18 21:06:09,314 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 21:06:09,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 180 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 21:06:09,320 INFO L432 NwaCegarLoop]: 156 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, 156 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 21:06:09,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:06:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 21:06:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-18 21:06:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 70 states have internal predecessors, (102), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:06:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 156 transitions. [2024-11-18 21:06:09,366 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 156 transitions. Word has length 179 [2024-11-18 21:06:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:09,367 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 156 transitions. [2024-11-18 21:06:09,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 21:06:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 156 transitions. [2024-11-18 21:06:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 21:06:09,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:09,374 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:09,389 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 21:06:09,577 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 21:06:09,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:09,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1068083871, now seen corresponding path program 1 times [2024-11-18 21:06:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118597489] [2024-11-18 21:06:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:09,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:10,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118597489] [2024-11-18 21:06:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118597489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:06:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785970515] [2024-11-18 21:06:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:10,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:06:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:06:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:06:10,248 INFO L87 Difference]: Start difference. First operand 99 states and 156 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:10,467 INFO L93 Difference]: Finished difference Result 331 states and 526 transitions. [2024-11-18 21:06:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:10,468 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-18 21:06:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:10,473 INFO L225 Difference]: With dead ends: 331 [2024-11-18 21:06:10,473 INFO L226 Difference]: Without dead ends: 235 [2024-11-18 21:06:10,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:06:10,475 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 170 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:10,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 505 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:06:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-18 21:06:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 203. [2024-11-18 21:06:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 146 states have (on average 1.4863013698630136) internal successors, (217), 146 states have internal predecessors, (217), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 21:06:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 325 transitions. [2024-11-18 21:06:10,516 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 325 transitions. Word has length 179 [2024-11-18 21:06:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:10,517 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 325 transitions. [2024-11-18 21:06:10,517 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 325 transitions. [2024-11-18 21:06:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 21:06:10,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:10,520 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:10,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:06:10,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:10,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash -897775331, now seen corresponding path program 1 times [2024-11-18 21:06:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:10,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104022644] [2024-11-18 21:06:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104022644] [2024-11-18 21:06:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104022644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:06:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367218812] [2024-11-18 21:06:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:10,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:06:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:06:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:06:10,844 INFO L87 Difference]: Start difference. First operand 203 states and 325 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:11,195 INFO L93 Difference]: Finished difference Result 594 states and 952 transitions. [2024-11-18 21:06:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:06:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-11-18 21:06:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:11,204 INFO L225 Difference]: With dead ends: 594 [2024-11-18 21:06:11,204 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 21:06:11,206 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 21:06:11,209 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 187 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:11,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 592 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:06:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 21:06:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 207. [2024-11-18 21:06:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 150 states have (on average 1.4733333333333334) internal successors, (221), 150 states have internal predecessors, (221), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 21:06:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 329 transitions. [2024-11-18 21:06:11,262 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 329 transitions. Word has length 180 [2024-11-18 21:06:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:11,263 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 329 transitions. [2024-11-18 21:06:11,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 329 transitions. [2024-11-18 21:06:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 21:06:11,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:11,270 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:11,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:06:11,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:11,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:11,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1053291099, now seen corresponding path program 1 times [2024-11-18 21:06:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145276875] [2024-11-18 21:06:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145276875] [2024-11-18 21:06:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145276875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:14,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:14,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 21:06:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742613980] [2024-11-18 21:06:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:14,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 21:06:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 21:06:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:06:14,529 INFO L87 Difference]: Start difference. First operand 207 states and 329 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:15,131 INFO L93 Difference]: Finished difference Result 618 states and 972 transitions. [2024-11-18 21:06:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 21:06:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-18 21:06:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:15,136 INFO L225 Difference]: With dead ends: 618 [2024-11-18 21:06:15,136 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 21:06:15,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:06:15,138 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 221 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:15,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 460 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 21:06:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 21:06:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 296. [2024-11-18 21:06:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 211 states have (on average 1.4786729857819905) internal successors, (312), 211 states have internal predecessors, (312), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 474 transitions. [2024-11-18 21:06:15,189 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 474 transitions. Word has length 181 [2024-11-18 21:06:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:15,191 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 474 transitions. [2024-11-18 21:06:15,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 474 transitions. [2024-11-18 21:06:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 21:06:15,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:15,195 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:15,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:06:15,195 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:15,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1971543126, now seen corresponding path program 1 times [2024-11-18 21:06:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273480099] [2024-11-18 21:06:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:26,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:26,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273480099] [2024-11-18 21:06:26,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273480099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:26,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 21:06:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691610389] [2024-11-18 21:06:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:26,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 21:06:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:26,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 21:06:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 21:06:26,549 INFO L87 Difference]: Start difference. First operand 296 states and 474 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:29,021 INFO L93 Difference]: Finished difference Result 792 states and 1231 transitions. [2024-11-18 21:06:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 21:06:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-18 21:06:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:29,026 INFO L225 Difference]: With dead ends: 792 [2024-11-18 21:06:29,027 INFO L226 Difference]: Without dead ends: 551 [2024-11-18 21:06:29,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2024-11-18 21:06:29,030 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 623 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:29,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 766 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:06:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-18 21:06:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 397. [2024-11-18 21:06:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 312 states have (on average 1.4903846153846154) internal successors, (465), 312 states have internal predecessors, (465), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 627 transitions. [2024-11-18 21:06:29,073 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 627 transitions. Word has length 181 [2024-11-18 21:06:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:29,075 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 627 transitions. [2024-11-18 21:06:29,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 627 transitions. [2024-11-18 21:06:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 21:06:29,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:29,079 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:29,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:06:29,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:29,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash -196535764, now seen corresponding path program 1 times [2024-11-18 21:06:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428649677] [2024-11-18 21:06:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428649677] [2024-11-18 21:06:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428649677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:06:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252321110] [2024-11-18 21:06:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:31,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:06:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:06:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:06:31,252 INFO L87 Difference]: Start difference. First operand 397 states and 627 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:32,373 INFO L93 Difference]: Finished difference Result 852 states and 1333 transitions. [2024-11-18 21:06:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:06:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-18 21:06:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:32,377 INFO L225 Difference]: With dead ends: 852 [2024-11-18 21:06:32,377 INFO L226 Difference]: Without dead ends: 632 [2024-11-18 21:06:32,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-18 21:06:32,379 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 481 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:32,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 598 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:06:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-18 21:06:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 462. [2024-11-18 21:06:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 377 states have (on average 1.4960212201591512) internal successors, (564), 377 states have internal predecessors, (564), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 726 transitions. [2024-11-18 21:06:32,422 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 726 transitions. Word has length 181 [2024-11-18 21:06:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:32,425 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 726 transitions. [2024-11-18 21:06:32,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 726 transitions. [2024-11-18 21:06:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 21:06:32,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:32,427 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:32,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:06:32,428 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:32,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1291484756, now seen corresponding path program 1 times [2024-11-18 21:06:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906669097] [2024-11-18 21:06:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906669097] [2024-11-18 21:06:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906669097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:34,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:34,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:06:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713458355] [2024-11-18 21:06:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:34,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:06:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:06:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:06:34,881 INFO L87 Difference]: Start difference. First operand 462 states and 726 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:36,162 INFO L93 Difference]: Finished difference Result 820 states and 1269 transitions. [2024-11-18 21:06:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:06:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-18 21:06:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:36,166 INFO L225 Difference]: With dead ends: 820 [2024-11-18 21:06:36,166 INFO L226 Difference]: Without dead ends: 598 [2024-11-18 21:06:36,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-18 21:06:36,168 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 386 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:36,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 620 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:06:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-18 21:06:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 482. [2024-11-18 21:06:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 397 states have (on average 1.5012594458438286) internal successors, (596), 397 states have internal predecessors, (596), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 758 transitions. [2024-11-18 21:06:36,209 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 758 transitions. Word has length 181 [2024-11-18 21:06:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:36,210 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 758 transitions. [2024-11-18 21:06:36,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 758 transitions. [2024-11-18 21:06:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 21:06:36,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:36,212 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:36,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:06:36,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:36,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash 32222745, now seen corresponding path program 1 times [2024-11-18 21:06:36,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543908913] [2024-11-18 21:06:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543908913] [2024-11-18 21:06:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543908913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:36,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:06:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56470038] [2024-11-18 21:06:36,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:36,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:06:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:06:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:06:36,619 INFO L87 Difference]: Start difference. First operand 482 states and 758 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:36,883 INFO L93 Difference]: Finished difference Result 746 states and 1169 transitions. [2024-11-18 21:06:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-18 21:06:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:36,887 INFO L225 Difference]: With dead ends: 746 [2024-11-18 21:06:36,887 INFO L226 Difference]: Without dead ends: 474 [2024-11-18 21:06:36,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:06:36,888 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 103 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:36,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 384 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:06:36,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-18 21:06:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 446. [2024-11-18 21:06:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 361 states have (on average 1.479224376731302) internal successors, (534), 361 states have internal predecessors, (534), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 696 transitions. [2024-11-18 21:06:36,932 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 696 transitions. Word has length 181 [2024-11-18 21:06:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:36,933 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 696 transitions. [2024-11-18 21:06:36,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 696 transitions. [2024-11-18 21:06:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 21:06:36,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:36,937 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:06:36,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:36,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1718840494, now seen corresponding path program 1 times [2024-11-18 21:06:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730636304] [2024-11-18 21:06:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730636304] [2024-11-18 21:06:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730636304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:39,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 21:06:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730373797] [2024-11-18 21:06:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:39,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:06:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:06:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:06:39,459 INFO L87 Difference]: Start difference. First operand 446 states and 696 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:40,736 INFO L93 Difference]: Finished difference Result 931 states and 1423 transitions. [2024-11-18 21:06:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 21:06:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-18 21:06:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:40,741 INFO L225 Difference]: With dead ends: 931 [2024-11-18 21:06:40,741 INFO L226 Difference]: Without dead ends: 633 [2024-11-18 21:06:40,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:06:40,743 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 271 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:40,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 834 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 21:06:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-18 21:06:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 474. [2024-11-18 21:06:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 387 states have (on average 1.4392764857881137) internal successors, (557), 387 states have internal predecessors, (557), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 719 transitions. [2024-11-18 21:06:40,789 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 719 transitions. Word has length 182 [2024-11-18 21:06:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:40,790 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 719 transitions. [2024-11-18 21:06:40,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 719 transitions. [2024-11-18 21:06:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 21:06:40,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:40,793 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:40,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:06:40,793 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:40,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 242027515, now seen corresponding path program 1 times [2024-11-18 21:06:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372949389] [2024-11-18 21:06:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372949389] [2024-11-18 21:06:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372949389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:44,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:44,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 21:06:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995305650] [2024-11-18 21:06:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:44,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 21:06:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 21:06:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:06:44,117 INFO L87 Difference]: Start difference. First operand 474 states and 719 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:46,704 INFO L93 Difference]: Finished difference Result 1113 states and 1676 transitions. [2024-11-18 21:06:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:06:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-18 21:06:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:46,710 INFO L225 Difference]: With dead ends: 1113 [2024-11-18 21:06:46,710 INFO L226 Difference]: Without dead ends: 823 [2024-11-18 21:06:46,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2024-11-18 21:06:46,712 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 506 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:46,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 632 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 21:06:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-18 21:06:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 603. [2024-11-18 21:06:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 516 states have (on average 1.4670542635658914) internal successors, (757), 516 states have internal predecessors, (757), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 919 transitions. [2024-11-18 21:06:46,756 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 919 transitions. Word has length 182 [2024-11-18 21:06:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:46,756 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 919 transitions. [2024-11-18 21:06:46,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 919 transitions. [2024-11-18 21:06:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 21:06:46,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:46,758 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:46,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:06:46,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:46,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash 922085885, now seen corresponding path program 1 times [2024-11-18 21:06:46,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:46,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330000177] [2024-11-18 21:06:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:46,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330000177] [2024-11-18 21:06:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330000177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:53,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:53,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 21:06:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907896969] [2024-11-18 21:06:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:53,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 21:06:53,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 21:06:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-18 21:06:53,379 INFO L87 Difference]: Start difference. First operand 603 states and 919 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:56,316 INFO L93 Difference]: Finished difference Result 1108 states and 1658 transitions. [2024-11-18 21:06:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 21:06:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-18 21:06:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:56,320 INFO L225 Difference]: With dead ends: 1108 [2024-11-18 21:06:56,320 INFO L226 Difference]: Without dead ends: 719 [2024-11-18 21:06:56,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:06:56,322 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 292 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:56,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1079 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 21:06:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-18 21:06:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 603. [2024-11-18 21:06:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 516 states have (on average 1.4651162790697674) internal successors, (756), 516 states have internal predecessors, (756), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:06:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 918 transitions. [2024-11-18 21:06:56,361 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 918 transitions. Word has length 182 [2024-11-18 21:06:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:56,362 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 918 transitions. [2024-11-18 21:06:56,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:06:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 918 transitions. [2024-11-18 21:06:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 21:06:56,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:56,366 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:56,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:06:56,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:56,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1654759403, now seen corresponding path program 1 times [2024-11-18 21:06:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594623027] [2024-11-18 21:06:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:56,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:06:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594623027] [2024-11-18 21:06:59,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594623027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:59,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:59,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 21:06:59,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011631751] [2024-11-18 21:06:59,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:59,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 21:06:59,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 21:06:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:06:59,991 INFO L87 Difference]: Start difference. First operand 603 states and 918 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:02,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:07:02,453 INFO L93 Difference]: Finished difference Result 1533 states and 2281 transitions. [2024-11-18 21:07:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:07:02,454 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-11-18 21:07:02,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:07:02,460 INFO L225 Difference]: With dead ends: 1533 [2024-11-18 21:07:02,460 INFO L226 Difference]: Without dead ends: 1215 [2024-11-18 21:07:02,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2024-11-18 21:07:02,462 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 449 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:07:02,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 620 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 21:07:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-18 21:07:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 689. [2024-11-18 21:07:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 602 states have (on average 1.4684385382059801) internal successors, (884), 602 states have internal predecessors, (884), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:07:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1046 transitions. [2024-11-18 21:07:02,509 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1046 transitions. Word has length 183 [2024-11-18 21:07:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:07:02,509 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1046 transitions. [2024-11-18 21:07:02,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1046 transitions. [2024-11-18 21:07:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 21:07:02,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:07:02,511 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:07:02,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:07:02,511 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:07:02,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:07:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1619139539, now seen corresponding path program 1 times [2024-11-18 21:07:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:07:02,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220344562] [2024-11-18 21:07:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:07:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:07:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:07:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:07:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:07:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220344562] [2024-11-18 21:07:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220344562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:07:05,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:07:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 21:07:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522038193] [2024-11-18 21:07:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:07:05,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:07:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:07:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:07:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:07:05,518 INFO L87 Difference]: Start difference. First operand 689 states and 1046 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:07:07,078 INFO L93 Difference]: Finished difference Result 1383 states and 2081 transitions. [2024-11-18 21:07:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 21:07:07,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-11-18 21:07:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:07:07,083 INFO L225 Difference]: With dead ends: 1383 [2024-11-18 21:07:07,083 INFO L226 Difference]: Without dead ends: 1033 [2024-11-18 21:07:07,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:07:07,085 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 280 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:07:07,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 684 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:07:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-18 21:07:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 609. [2024-11-18 21:07:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 522 states have (on average 1.4636015325670497) internal successors, (764), 522 states have internal predecessors, (764), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:07:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 926 transitions. [2024-11-18 21:07:07,127 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 926 transitions. Word has length 183 [2024-11-18 21:07:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:07:07,128 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 926 transitions. [2024-11-18 21:07:07,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 926 transitions. [2024-11-18 21:07:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 21:07:07,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:07:07,129 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:07:07,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 21:07:07,129 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:07:07,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:07:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash 508122767, now seen corresponding path program 1 times [2024-11-18 21:07:07,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:07:07,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879060518] [2024-11-18 21:07:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:07:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:07:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:07:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-18 21:07:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:07:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879060518] [2024-11-18 21:07:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879060518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:07:16,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:07:16,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 21:07:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634573696] [2024-11-18 21:07:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:07:16,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 21:07:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:07:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 21:07:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-18 21:07:16,084 INFO L87 Difference]: Start difference. First operand 609 states and 926 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:07:19,514 INFO L93 Difference]: Finished difference Result 1113 states and 1662 transitions. [2024-11-18 21:07:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 21:07:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-11-18 21:07:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:07:19,518 INFO L225 Difference]: With dead ends: 1113 [2024-11-18 21:07:19,518 INFO L226 Difference]: Without dead ends: 787 [2024-11-18 21:07:19,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:07:19,520 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 457 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:07:19,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 760 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 21:07:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-18 21:07:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 617. [2024-11-18 21:07:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 530 states have (on average 1.4641509433962263) internal successors, (776), 530 states have internal predecessors, (776), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 21:07:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 938 transitions. [2024-11-18 21:07:19,561 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 938 transitions. Word has length 183 [2024-11-18 21:07:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:07:19,561 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 938 transitions. [2024-11-18 21:07:19,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-18 21:07:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 938 transitions. [2024-11-18 21:07:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 21:07:19,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:07:19,563 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:07:19,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 21:07:19,564 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:07:19,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:07:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash -586826225, now seen corresponding path program 1 times [2024-11-18 21:07:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:07:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539940531] [2024-11-18 21:07:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:07:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:07:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat