./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.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-ci_file-81.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 b28ed2134b8a500a12d5d4bc892752e1e825197b4bf6ff6b142642da12ed1a0e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:50:00,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:50:00,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:50:00,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:50:00,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:50:00,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:50:00,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:50:00,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:50:00,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:50:00,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:50:00,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:50:00,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:50:00,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:50:00,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:50:00,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:50:00,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:50:00,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:50:00,329 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:50:00,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:50:00,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:50:00,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:50:00,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:50:00,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:50:00,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:50:00,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:50:00,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:50:00,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:50:00,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:50:00,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:50:00,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:50:00,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:50:00,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:50:00,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28ed2134b8a500a12d5d4bc892752e1e825197b4bf6ff6b142642da12ed1a0e [2024-11-18 20:50:00,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:50:00,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:50:00,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:50:00,654 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:50:00,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:50:00,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2024-11-18 20:50:01,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:50:02,144 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:50:02,144 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2024-11-18 20:50:02,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3ffe599/ae39abfcd2514e209b51fd56e5dca299/FLAG5caf27335 [2024-11-18 20:50:02,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3ffe599/ae39abfcd2514e209b51fd56e5dca299 [2024-11-18 20:50:02,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:50:02,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:50:02,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:50:02,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:50:02,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:50:02,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d451e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02, skipping insertion in model container [2024-11-18 20:50:02,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:50:02,380 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-ci_file-81.i[919,932] [2024-11-18 20:50:02,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:50:02,508 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:50:02,530 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-ci_file-81.i[919,932] [2024-11-18 20:50:02,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:50:02,601 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:50:02,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02 WrapperNode [2024-11-18 20:50:02,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:50:02,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:50:02,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:50:02,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:50:02,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,667 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2024-11-18 20:50:02,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:50:02,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:50:02,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:50:02,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:50:02,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,711 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 20:50:02,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:50:02,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:50:02,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:50:02,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:50:02,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (1/1) ... [2024-11-18 20:50:02,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:50:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:50:02,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 20:50:02,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 20:50:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:50:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:50:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:50:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:50:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:50:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:50:02,887 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:50:02,889 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:50:03,185 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 20:50:03,185 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:50:03,200 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:50:03,200 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:50:03,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:03 BoogieIcfgContainer [2024-11-18 20:50:03,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:50:03,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:50:03,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:50:03,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:50:03,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:50:02" (1/3) ... [2024-11-18 20:50:03,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f1d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:03, skipping insertion in model container [2024-11-18 20:50:03,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:02" (2/3) ... [2024-11-18 20:50:03,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f1d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:03, skipping insertion in model container [2024-11-18 20:50:03,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:03" (3/3) ... [2024-11-18 20:50:03,208 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2024-11-18 20:50:03,221 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:50:03,222 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:50:03,296 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:50:03,301 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;@11ad9bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:50:03,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:50:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 20:50:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:03,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:03,320 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:03,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:03,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1706633354, now seen corresponding path program 1 times [2024-11-18 20:50:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388746937] [2024-11-18 20:50:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:03,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 20:50:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388746937] [2024-11-18 20:50:03,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388746937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:50:03,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300415430] [2024-11-18 20:50:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:03,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:50:03,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:50:03,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:50:03,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:50:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:04,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:50:04,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:50:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 20:50:04,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:50:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300415430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:50:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:50:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803289878] [2024-11-18 20:50:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:04,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:50:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:50:04,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:50:04,092 INFO L87 Difference]: Start difference. First operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 20:50:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:04,124 INFO L93 Difference]: Finished difference Result 204 states and 359 transitions. [2024-11-18 20:50:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:50:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-18 20:50:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:04,131 INFO L225 Difference]: With dead ends: 204 [2024-11-18 20:50:04,131 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 20:50:04,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:50:04,139 INFO L432 NwaCegarLoop]: 158 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, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:04,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:50:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 20:50:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-18 20:50:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 20:50:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 158 transitions. [2024-11-18 20:50:04,183 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 158 transitions. Word has length 202 [2024-11-18 20:50:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:04,183 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 158 transitions. [2024-11-18 20:50:04,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 20:50:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 158 transitions. [2024-11-18 20:50:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:04,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:04,188 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:04,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 20:50:04,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:50:04,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:04,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:04,394 INFO L85 PathProgramCache]: Analyzing trace with hash 4618240, now seen corresponding path program 1 times [2024-11-18 20:50:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994116304] [2024-11-18 20:50:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994116304] [2024-11-18 20:50:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994116304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:05,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:05,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:50:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938380527] [2024-11-18 20:50:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:05,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:50:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:50:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:50:05,345 INFO L87 Difference]: Start difference. First operand 101 states and 158 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:05,619 INFO L93 Difference]: Finished difference Result 269 states and 421 transitions. [2024-11-18 20:50:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:50:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:50:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:05,626 INFO L225 Difference]: With dead ends: 269 [2024-11-18 20:50:05,628 INFO L226 Difference]: Without dead ends: 171 [2024-11-18 20:50:05,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:50:05,630 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 125 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:05,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 448 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:50:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-18 20:50:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 119. [2024-11-18 20:50:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 86 states have internal predecessors, (127), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 20:50:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 189 transitions. [2024-11-18 20:50:05,655 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 189 transitions. Word has length 202 [2024-11-18 20:50:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:05,656 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 189 transitions. [2024-11-18 20:50:05,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 189 transitions. [2024-11-18 20:50:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:05,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:05,663 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:05,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:50:05,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:05,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 684676610, now seen corresponding path program 1 times [2024-11-18 20:50:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344431502] [2024-11-18 20:50:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:20,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344431502] [2024-11-18 20:50:20,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344431502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:20,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:20,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:50:20,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966213632] [2024-11-18 20:50:20,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:20,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:50:20,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:50:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:50:20,344 INFO L87 Difference]: Start difference. First operand 119 states and 189 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-18 20:50:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:27,718 INFO L93 Difference]: Finished difference Result 531 states and 808 transitions. [2024-11-18 20:50:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 20:50:27,721 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 202 [2024-11-18 20:50:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:27,729 INFO L225 Difference]: With dead ends: 531 [2024-11-18 20:50:27,729 INFO L226 Difference]: Without dead ends: 415 [2024-11-18 20:50:27,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=353, Invalid=769, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 20:50:27,731 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 2308 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:27,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 546 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 20:50:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-18 20:50:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 167. [2024-11-18 20:50:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 133 states have (on average 1.5263157894736843) internal successors, (203), 133 states have internal predecessors, (203), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 20:50:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 265 transitions. [2024-11-18 20:50:27,796 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 265 transitions. Word has length 202 [2024-11-18 20:50:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:27,797 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 265 transitions. [2024-11-18 20:50:27,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-18 20:50:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 265 transitions. [2024-11-18 20:50:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:27,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:27,806 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:27,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:50:27,806 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:27,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -326440640, now seen corresponding path program 1 times [2024-11-18 20:50:27,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710397382] [2024-11-18 20:50:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710397382] [2024-11-18 20:50:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710397382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:50:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999362277] [2024-11-18 20:50:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:28,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:50:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:50:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:50:28,259 INFO L87 Difference]: Start difference. First operand 167 states and 265 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:28,379 INFO L93 Difference]: Finished difference Result 392 states and 621 transitions. [2024-11-18 20:50:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:50:28,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:50:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:28,383 INFO L225 Difference]: With dead ends: 392 [2024-11-18 20:50:28,388 INFO L226 Difference]: Without dead ends: 228 [2024-11-18 20:50:28,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:50:28,390 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 67 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:28,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 455 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:50:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-18 20:50:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 210. [2024-11-18 20:50:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.4853801169590644) internal successors, (254), 172 states have internal predecessors, (254), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 20:50:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 324 transitions. [2024-11-18 20:50:28,429 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 324 transitions. Word has length 202 [2024-11-18 20:50:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:28,434 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 324 transitions. [2024-11-18 20:50:28,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 324 transitions. [2024-11-18 20:50:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:28,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:28,438 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:28,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:50:28,441 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:28,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash -903671292, now seen corresponding path program 1 times [2024-11-18 20:50:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109632709] [2024-11-18 20:50:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109632709] [2024-11-18 20:50:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109632709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:40,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:40,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 20:50:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464765169] [2024-11-18 20:50:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:40,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 20:50:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 20:50:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:50:40,278 INFO L87 Difference]: Start difference. First operand 210 states and 324 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-18 20:50:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:44,125 INFO L93 Difference]: Finished difference Result 601 states and 909 transitions. [2024-11-18 20:50:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:50:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 202 [2024-11-18 20:50:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:44,133 INFO L225 Difference]: With dead ends: 601 [2024-11-18 20:50:44,134 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 20:50:44,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2024-11-18 20:50:44,136 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 1505 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:44,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 480 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 20:50:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 20:50:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 210. [2024-11-18 20:50:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.4853801169590644) internal successors, (254), 172 states have internal predecessors, (254), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 20:50:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 324 transitions. [2024-11-18 20:50:44,157 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 324 transitions. Word has length 202 [2024-11-18 20:50:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:44,158 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 324 transitions. [2024-11-18 20:50:44,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-18 20:50:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 324 transitions. [2024-11-18 20:50:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:44,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:44,160 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:44,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:50:44,160 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:44,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1309468096, now seen corresponding path program 1 times [2024-11-18 20:50:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:44,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139535936] [2024-11-18 20:50:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:45,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:45,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139535936] [2024-11-18 20:50:45,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139535936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:45,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 20:50:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582267863] [2024-11-18 20:50:45,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:45,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 20:50:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 20:50:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 20:50:45,685 INFO L87 Difference]: Start difference. First operand 210 states and 324 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:50:46,469 INFO L93 Difference]: Finished difference Result 787 states and 1210 transitions. [2024-11-18 20:50:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 20:50:46,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:50:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:50:46,472 INFO L225 Difference]: With dead ends: 787 [2024-11-18 20:50:46,472 INFO L226 Difference]: Without dead ends: 580 [2024-11-18 20:50:46,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:50:46,474 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 360 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:50:46,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1215 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:50:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-18 20:50:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 318. [2024-11-18 20:50:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 246 states have (on average 1.475609756097561) internal successors, (363), 247 states have internal predecessors, (363), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:50:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 495 transitions. [2024-11-18 20:50:46,508 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 495 transitions. Word has length 202 [2024-11-18 20:50:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:50:46,509 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 495 transitions. [2024-11-18 20:50:46,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:50:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 495 transitions. [2024-11-18 20:50:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:50:46,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:50:46,511 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:50:46,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:50:46,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:50:46,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:50:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1502325060, now seen corresponding path program 1 times [2024-11-18 20:50:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:50:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144207213] [2024-11-18 20:50:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:50:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:50:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:50:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:50:57,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:50:57,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144207213] [2024-11-18 20:50:57,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144207213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:50:57,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:50:57,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 20:50:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10863141] [2024-11-18 20:50:57,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:50:57,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 20:50:57,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:50:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 20:50:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 20:50:57,385 INFO L87 Difference]: Start difference. First operand 318 states and 495 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:51:01,277 INFO L93 Difference]: Finished difference Result 823 states and 1256 transitions. [2024-11-18 20:51:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 20:51:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:51:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:51:01,286 INFO L225 Difference]: With dead ends: 823 [2024-11-18 20:51:01,287 INFO L226 Difference]: Without dead ends: 616 [2024-11-18 20:51:01,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2024-11-18 20:51:01,288 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 939 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 20:51:01,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 782 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 20:51:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-18 20:51:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 321. [2024-11-18 20:51:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 249 states have (on average 1.4779116465863453) internal successors, (368), 250 states have internal predecessors, (368), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:51:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 500 transitions. [2024-11-18 20:51:01,360 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 500 transitions. Word has length 202 [2024-11-18 20:51:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:51:01,364 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 500 transitions. [2024-11-18 20:51:01,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 500 transitions. [2024-11-18 20:51:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:51:01,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:51:01,366 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:51:01,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:51:01,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:51:01,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:51:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash -86022842, now seen corresponding path program 1 times [2024-11-18 20:51:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:51:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700577282] [2024-11-18 20:51:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:51:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:51:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:51:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:51:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:51:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700577282] [2024-11-18 20:51:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700577282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:51:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:51:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 20:51:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183603404] [2024-11-18 20:51:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:51:09,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 20:51:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:51:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 20:51:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:51:09,730 INFO L87 Difference]: Start difference. First operand 321 states and 500 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:51:13,499 INFO L93 Difference]: Finished difference Result 839 states and 1261 transitions. [2024-11-18 20:51:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 20:51:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:51:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:51:13,503 INFO L225 Difference]: With dead ends: 839 [2024-11-18 20:51:13,503 INFO L226 Difference]: Without dead ends: 632 [2024-11-18 20:51:13,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2024-11-18 20:51:13,510 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 797 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:51:13,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 843 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 20:51:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-18 20:51:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 356. [2024-11-18 20:51:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 284 states have (on average 1.4753521126760563) internal successors, (419), 285 states have internal predecessors, (419), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:51:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 551 transitions. [2024-11-18 20:51:13,591 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 551 transitions. Word has length 202 [2024-11-18 20:51:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:51:13,592 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 551 transitions. [2024-11-18 20:51:13,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:13,592 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 551 transitions. [2024-11-18 20:51:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 20:51:13,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:51:13,598 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:51:13,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:51:13,598 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:51:13,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:51:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1107378436, now seen corresponding path program 1 times [2024-11-18 20:51:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:51:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577545002] [2024-11-18 20:51:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:51:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:51:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:51:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:51:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:51:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577545002] [2024-11-18 20:51:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577545002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:51:14,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:51:14,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 20:51:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760721539] [2024-11-18 20:51:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:51:14,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 20:51:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:51:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 20:51:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:51:14,085 INFO L87 Difference]: Start difference. First operand 356 states and 551 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:51:14,616 INFO L93 Difference]: Finished difference Result 787 states and 1216 transitions. [2024-11-18 20:51:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:51:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-18 20:51:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:51:14,621 INFO L225 Difference]: With dead ends: 787 [2024-11-18 20:51:14,621 INFO L226 Difference]: Without dead ends: 580 [2024-11-18 20:51:14,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:51:14,623 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 433 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:51:14,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 770 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:51:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-18 20:51:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 362. [2024-11-18 20:51:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 290 states have (on average 1.4793103448275862) internal successors, (429), 291 states have internal predecessors, (429), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:51:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 561 transitions. [2024-11-18 20:51:14,659 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 561 transitions. Word has length 202 [2024-11-18 20:51:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:51:14,659 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 561 transitions. [2024-11-18 20:51:14,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 561 transitions. [2024-11-18 20:51:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 20:51:14,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:51:14,662 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:51:14,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:51:14,662 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:51:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:51:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 334564308, now seen corresponding path program 1 times [2024-11-18 20:51:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:51:14,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584630396] [2024-11-18 20:51:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:51:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:51:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:51:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 20:51:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:51:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584630396] [2024-11-18 20:51:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584630396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:51:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:51:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 20:51:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684534686] [2024-11-18 20:51:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:51:27,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 20:51:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:51:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 20:51:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-18 20:51:27,581 INFO L87 Difference]: Start difference. First operand 362 states and 561 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:51:30,878 INFO L93 Difference]: Finished difference Result 796 states and 1218 transitions. [2024-11-18 20:51:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 20:51:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-18 20:51:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:51:30,882 INFO L225 Difference]: With dead ends: 796 [2024-11-18 20:51:30,882 INFO L226 Difference]: Without dead ends: 589 [2024-11-18 20:51:30,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-11-18 20:51:30,884 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 916 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 20:51:30,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 810 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 20:51:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-18 20:51:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 373. [2024-11-18 20:51:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 301 states have (on average 1.4817275747508305) internal successors, (446), 302 states have internal predecessors, (446), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 20:51:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 578 transitions. [2024-11-18 20:51:30,917 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 578 transitions. Word has length 203 [2024-11-18 20:51:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:51:30,919 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 578 transitions. [2024-11-18 20:51:30,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 20:51:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 578 transitions. [2024-11-18 20:51:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 20:51:30,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:51:30,920 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:51:30,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:51:30,921 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:51:30,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:51:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1659580398, now seen corresponding path program 1 times [2024-11-18 20:51:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:51:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525988170] [2024-11-18 20:51:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:51:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:51:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat