./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.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_loopvsstraightlinecode_100-1loop_file-20.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 d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:19:48,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:19:48,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:19:48,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:19:48,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:19:48,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:19:48,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:19:48,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:19:48,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:19:48,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:19:48,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:19:48,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:19:48,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:19:48,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:19:48,254 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:19:48,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:19:48,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:19:48,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:19:48,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:19:48,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:19:48,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:19:48,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:19:48,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:19:48,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:19:48,260 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:19:48,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:19:48,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:19:48,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:19:48,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:19:48,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:19:48,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:19:48,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:19:48,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:19:48,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:19:48,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:19:48,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:19:48,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:19:48,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:19:48,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:19:48,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:19:48,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:19:48,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:19:48,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 [2024-11-18 22:19:48,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:19:48,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:19:48,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:19:48,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:19:48,559 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:19:48,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-18 22:19:50,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:19:50,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:19:50,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-18 22:19:50,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4c8d0d6/f4f1bed7082a43728df0312d846e039e/FLAG8b103104c [2024-11-18 22:19:50,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4c8d0d6/f4f1bed7082a43728df0312d846e039e [2024-11-18 22:19:50,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:19:50,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:19:50,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:19:50,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:19:50,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:19:50,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:19:50" (1/1) ... [2024-11-18 22:19:50,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b4f6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:50, skipping insertion in model container [2024-11-18 22:19:50,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:19:50" (1/1) ... [2024-11-18 22:19:50,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:19:50,914 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_loopvsstraightlinecode_100-1loop_file-20.i[916,929] [2024-11-18 22:19:51,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:19:51,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:19:51,025 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_loopvsstraightlinecode_100-1loop_file-20.i[916,929] [2024-11-18 22:19:51,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:19:51,085 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:19:51,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51 WrapperNode [2024-11-18 22:19:51,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:19:51,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:19:51,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:19:51,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:19:51,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,151 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2024-11-18 22:19:51,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:19:51,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:19:51,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:19:51,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:19:51,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,192 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 22:19:51,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:19:51,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:19:51,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:19:51,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:19:51,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (1/1) ... [2024-11-18 22:19:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:19:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:19:51,259 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 22:19:51,261 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 22:19:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:19:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:19:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:19:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:19:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:19:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:19:51,424 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:19:51,428 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:19:52,014 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-18 22:19:52,014 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:19:52,033 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:19:52,035 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:19:52,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:19:52 BoogieIcfgContainer [2024-11-18 22:19:52,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:19:52,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:19:52,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:19:52,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:19:52,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:19:50" (1/3) ... [2024-11-18 22:19:52,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e38ec9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:19:52, skipping insertion in model container [2024-11-18 22:19:52,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:19:51" (2/3) ... [2024-11-18 22:19:52,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e38ec9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:19:52, skipping insertion in model container [2024-11-18 22:19:52,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:19:52" (3/3) ... [2024-11-18 22:19:52,048 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-20.i [2024-11-18 22:19:52,067 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:19:52,068 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:19:52,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:19:52,155 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;@5f32d4cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:19:52,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:19:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 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 22:19:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 22:19:52,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:19:52,183 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, 1] [2024-11-18 22:19:52,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:19:52,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:19:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash 963517484, now seen corresponding path program 1 times [2024-11-18 22:19:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:19:52,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998890522] [2024-11-18 22:19:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:19:52,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:19:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:19:53,212 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 22:19:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:19:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998890522] [2024-11-18 22:19:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998890522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:19:53,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:19:53,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:19:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134946469] [2024-11-18 22:19:53,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:19:53,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:19:53,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:19:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:19:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:19:53,254 INFO L87 Difference]: Start difference. First operand has 117 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 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 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:19:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:19:53,707 INFO L93 Difference]: Finished difference Result 384 states and 658 transitions. [2024-11-18 22:19:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:19:53,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 204 [2024-11-18 22:19:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:19:53,732 INFO L225 Difference]: With dead ends: 384 [2024-11-18 22:19:53,732 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 22:19:53,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:19:53,742 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 183 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:19:53,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 759 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:19:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 22:19:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2024-11-18 22:19:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 181 states have (on average 1.3977900552486189) internal successors, (253), 181 states have internal predecessors, (253), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:19:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 377 transitions. [2024-11-18 22:19:53,833 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 377 transitions. Word has length 204 [2024-11-18 22:19:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:19:53,836 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 377 transitions. [2024-11-18 22:19:53,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:19:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 377 transitions. [2024-11-18 22:19:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 22:19:53,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:19:53,844 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, 1, 1] [2024-11-18 22:19:53,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 22:19:53,845 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:19:53,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:19:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1570159055, now seen corresponding path program 1 times [2024-11-18 22:19:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:19:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285837026] [2024-11-18 22:19:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:19:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:19:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:19:54,411 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 22:19:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:19:54,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285837026] [2024-11-18 22:19:54,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285837026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:19:54,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:19:54,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:19:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937621453] [2024-11-18 22:19:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:19:54,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:19:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:19:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:19:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:19:54,417 INFO L87 Difference]: Start difference. First operand 246 states and 377 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 22:19:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:19:54,756 INFO L93 Difference]: Finished difference Result 715 states and 1096 transitions. [2024-11-18 22:19:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:19:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 205 [2024-11-18 22:19:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:19:54,765 INFO L225 Difference]: With dead ends: 715 [2024-11-18 22:19:54,765 INFO L226 Difference]: Without dead ends: 472 [2024-11-18 22:19:54,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:19:54,773 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 144 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:19:54,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 584 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:19:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-18 22:19:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 321. [2024-11-18 22:19:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.4453125) internal successors, (370), 256 states have internal predecessors, (370), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:19:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 494 transitions. [2024-11-18 22:19:54,838 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 494 transitions. Word has length 205 [2024-11-18 22:19:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:19:54,842 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 494 transitions. [2024-11-18 22:19:54,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 22:19:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 494 transitions. [2024-11-18 22:19:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:19:54,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:19:54,846 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, 1, 1, 1] [2024-11-18 22:19:54,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:19:54,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:19:54,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:19:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -528286763, now seen corresponding path program 1 times [2024-11-18 22:19:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:19:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030770034] [2024-11-18 22:19:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:19:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:19:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:19:58,654 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 22:19:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:19:58,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030770034] [2024-11-18 22:19:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030770034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:19:58,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:19:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:19:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802761550] [2024-11-18 22:19:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:19:58,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:19:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:19:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:19:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:19:58,660 INFO L87 Difference]: Start difference. First operand 321 states and 494 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 22:20:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:01,481 INFO L93 Difference]: Finished difference Result 1162 states and 1713 transitions. [2024-11-18 22:20:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 22:20:01,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 206 [2024-11-18 22:20:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:01,489 INFO L225 Difference]: With dead ends: 1162 [2024-11-18 22:20:01,490 INFO L226 Difference]: Without dead ends: 844 [2024-11-18 22:20:01,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-18 22:20:01,494 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 546 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:01,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1427 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 22:20:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-18 22:20:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 389. [2024-11-18 22:20:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 324 states have (on average 1.462962962962963) internal successors, (474), 324 states have internal predecessors, (474), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:20:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 598 transitions. [2024-11-18 22:20:01,537 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 598 transitions. Word has length 206 [2024-11-18 22:20:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:01,539 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 598 transitions. [2024-11-18 22:20:01,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 22:20:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 598 transitions. [2024-11-18 22:20:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:20:01,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:01,544 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, 1, 1, 1] [2024-11-18 22:20:01,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:20:01,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1808150441, now seen corresponding path program 1 times [2024-11-18 22:20:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588107293] [2024-11-18 22:20:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:02,943 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 22:20:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588107293] [2024-11-18 22:20:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588107293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:02,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:20:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200620870] [2024-11-18 22:20:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:02,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:20:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:20:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:20:02,946 INFO L87 Difference]: Start difference. First operand 389 states and 598 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 22:20:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:03,551 INFO L93 Difference]: Finished difference Result 1100 states and 1681 transitions. [2024-11-18 22:20:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:20:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 206 [2024-11-18 22:20:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:03,556 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 22:20:03,557 INFO L226 Difference]: Without dead ends: 714 [2024-11-18 22:20:03,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:20:03,559 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 349 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:03,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 492 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:20:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-18 22:20:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 475. [2024-11-18 22:20:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 410 states have (on average 1.4926829268292683) internal successors, (612), 410 states have internal predecessors, (612), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:20:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 736 transitions. [2024-11-18 22:20:03,581 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 736 transitions. Word has length 206 [2024-11-18 22:20:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:03,582 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 736 transitions. [2024-11-18 22:20:03,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 22:20:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 736 transitions. [2024-11-18 22:20:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:20:03,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:03,585 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, 1, 1, 1] [2024-11-18 22:20:03,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:20:03,585 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:03,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 797873113, now seen corresponding path program 1 times [2024-11-18 22:20:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897134640] [2024-11-18 22:20:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:04,939 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 22:20:04,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:04,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897134640] [2024-11-18 22:20:04,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897134640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:04,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:04,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:20:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280793228] [2024-11-18 22:20:04,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:04,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:20:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:20:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:20:04,945 INFO L87 Difference]: Start difference. First operand 475 states and 736 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 22:20:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:06,295 INFO L93 Difference]: Finished difference Result 1237 states and 1874 transitions. [2024-11-18 22:20:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:20:06,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 206 [2024-11-18 22:20:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:06,301 INFO L225 Difference]: With dead ends: 1237 [2024-11-18 22:20:06,301 INFO L226 Difference]: Without dead ends: 765 [2024-11-18 22:20:06,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:20:06,305 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 388 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:06,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 776 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:20:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-18 22:20:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 420. [2024-11-18 22:20:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 355 states have (on average 1.4732394366197183) internal successors, (523), 355 states have internal predecessors, (523), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:20:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 647 transitions. [2024-11-18 22:20:06,333 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 647 transitions. Word has length 206 [2024-11-18 22:20:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:06,334 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 647 transitions. [2024-11-18 22:20:06,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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 22:20:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 647 transitions. [2024-11-18 22:20:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 22:20:06,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:06,337 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, 1, 1, 1] [2024-11-18 22:20:06,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:20:06,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:06,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -147945687, now seen corresponding path program 1 times [2024-11-18 22:20:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384745989] [2024-11-18 22:20:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:06,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:06,479 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 22:20:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384745989] [2024-11-18 22:20:06,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384745989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:06,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:06,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:20:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993695803] [2024-11-18 22:20:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:06,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:20:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:20:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:20:06,484 INFO L87 Difference]: Start difference. First operand 420 states and 647 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:20:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:06,576 INFO L93 Difference]: Finished difference Result 1105 states and 1703 transitions. [2024-11-18 22:20:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:20:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 206 [2024-11-18 22:20:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:06,585 INFO L225 Difference]: With dead ends: 1105 [2024-11-18 22:20:06,585 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 22:20:06,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:20:06,587 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 148 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:06,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 459 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:20:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 22:20:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 539. [2024-11-18 22:20:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 474 states have (on average 1.4915611814345993) internal successors, (707), 474 states have internal predecessors, (707), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 22:20:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 831 transitions. [2024-11-18 22:20:06,616 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 831 transitions. Word has length 206 [2024-11-18 22:20:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:06,617 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 831 transitions. [2024-11-18 22:20:06,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:20:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 831 transitions. [2024-11-18 22:20:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 22:20:06,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:06,620 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, 1, 1, 1, 1] [2024-11-18 22:20:06,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:20:06,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:06,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1976753518, now seen corresponding path program 1 times [2024-11-18 22:20:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:06,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864904254] [2024-11-18 22:20:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:06,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:06,983 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 22:20:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864904254] [2024-11-18 22:20:06,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864904254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:06,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:06,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:20:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484552362] [2024-11-18 22:20:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:06,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:20:06,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:20:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:20:06,986 INFO L87 Difference]: Start difference. First operand 539 states and 831 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 22:20:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:07,431 INFO L93 Difference]: Finished difference Result 1444 states and 2219 transitions. [2024-11-18 22:20:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:20:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 207 [2024-11-18 22:20:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:07,437 INFO L225 Difference]: With dead ends: 1444 [2024-11-18 22:20:07,437 INFO L226 Difference]: Without dead ends: 908 [2024-11-18 22:20:07,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:20:07,441 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 172 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:07,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 560 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:20:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-11-18 22:20:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 750. [2024-11-18 22:20:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 679 states have (on average 1.508100147275405) internal successors, (1024), 680 states have internal predecessors, (1024), 66 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 22:20:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1156 transitions. [2024-11-18 22:20:07,478 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1156 transitions. Word has length 207 [2024-11-18 22:20:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:07,479 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1156 transitions. [2024-11-18 22:20:07,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 22:20:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1156 transitions. [2024-11-18 22:20:07,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:20:07,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:07,483 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, 1, 1, 1, 1, 1] [2024-11-18 22:20:07,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:20:07,483 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:07,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash -418640496, now seen corresponding path program 1 times [2024-11-18 22:20:07,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:07,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714024401] [2024-11-18 22:20:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:07,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:20:08,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714024401] [2024-11-18 22:20:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714024401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:20:08,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509890669] [2024-11-18 22:20:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:20:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:20:08,197 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 22:20:08,198 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 22:20:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:08,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:20:08,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:20:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-18 22:20:09,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:20:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 22:20:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509890669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:20:09,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:20:09,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 20 [2024-11-18 22:20:09,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865275969] [2024-11-18 22:20:09,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:20:09,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 22:20:09,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 22:20:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-18 22:20:09,832 INFO L87 Difference]: Start difference. First operand 750 states and 1156 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) [2024-11-18 22:20:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:12,630 INFO L93 Difference]: Finished difference Result 2147 states and 3167 transitions. [2024-11-18 22:20:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-18 22:20:12,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) Word has length 208 [2024-11-18 22:20:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:12,637 INFO L225 Difference]: With dead ends: 2147 [2024-11-18 22:20:12,638 INFO L226 Difference]: Without dead ends: 1184 [2024-11-18 22:20:12,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1214, Invalid=4042, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 22:20:12,642 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 1332 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:12,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1307 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 22:20:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-18 22:20:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 858. [2024-11-18 22:20:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 751 states have (on average 1.4354194407456724) internal successors, (1078), 755 states have internal predecessors, (1078), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1258 transitions. [2024-11-18 22:20:12,702 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1258 transitions. Word has length 208 [2024-11-18 22:20:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:12,702 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1258 transitions. [2024-11-18 22:20:12,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 5 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (79), 5 states have call predecessors, (79), 5 states have call successors, (79) [2024-11-18 22:20:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1258 transitions. [2024-11-18 22:20:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:20:12,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:12,706 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, 1, 1, 1, 1, 1] [2024-11-18 22:20:12,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:20:12,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:20:12,908 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:12,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -476914868, now seen corresponding path program 1 times [2024-11-18 22:20:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:12,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402233666] [2024-11-18 22:20:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:15,240 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 22:20:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:15,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402233666] [2024-11-18 22:20:15,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402233666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:15,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:15,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 22:20:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876516415] [2024-11-18 22:20:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:15,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:20:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:20:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:20:15,247 INFO L87 Difference]: Start difference. First operand 858 states and 1258 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 22:20:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:17,312 INFO L93 Difference]: Finished difference Result 2055 states and 2989 transitions. [2024-11-18 22:20:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 22:20:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 208 [2024-11-18 22:20:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:17,324 INFO L225 Difference]: With dead ends: 2055 [2024-11-18 22:20:17,324 INFO L226 Difference]: Without dead ends: 1532 [2024-11-18 22:20:17,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:20:17,330 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 644 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:17,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1198 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 22:20:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2024-11-18 22:20:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 874. [2024-11-18 22:20:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 767 states have (on average 1.4354628422425033) internal successors, (1101), 771 states have internal predecessors, (1101), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1281 transitions. [2024-11-18 22:20:17,413 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1281 transitions. Word has length 208 [2024-11-18 22:20:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:17,414 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1281 transitions. [2024-11-18 22:20:17,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 22:20:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1281 transitions. [2024-11-18 22:20:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 22:20:17,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:17,417 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, 1, 1, 1, 1, 1] [2024-11-18 22:20:17,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:20:17,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:17,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:17,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1488032118, now seen corresponding path program 1 times [2024-11-18 22:20:17,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:17,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571469065] [2024-11-18 22:20:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:19,266 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 22:20:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571469065] [2024-11-18 22:20:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571469065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:19,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:20:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481860326] [2024-11-18 22:20:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:19,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:20:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:20:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:20:19,269 INFO L87 Difference]: Start difference. First operand 874 states and 1281 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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 22:20:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:20,678 INFO L93 Difference]: Finished difference Result 2068 states and 3012 transitions. [2024-11-18 22:20:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:20:20,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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 208 [2024-11-18 22:20:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:20,686 INFO L225 Difference]: With dead ends: 2068 [2024-11-18 22:20:20,686 INFO L226 Difference]: Without dead ends: 1197 [2024-11-18 22:20:20,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:20:20,691 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 282 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:20,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 889 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:20:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-18 22:20:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 924. [2024-11-18 22:20:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 817 states have (on average 1.438188494492044) internal successors, (1175), 821 states have internal predecessors, (1175), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1355 transitions. [2024-11-18 22:20:20,764 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1355 transitions. Word has length 208 [2024-11-18 22:20:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:20,764 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1355 transitions. [2024-11-18 22:20:20,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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 22:20:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1355 transitions. [2024-11-18 22:20:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 22:20:20,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:20,769 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, 1, 1, 1, 1, 1, 1] [2024-11-18 22:20:20,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:20:20,769 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:20,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 101331390, now seen corresponding path program 1 times [2024-11-18 22:20:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369267886] [2024-11-18 22:20:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:26,070 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 22:20:26,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369267886] [2024-11-18 22:20:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369267886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 22:20:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602705949] [2024-11-18 22:20:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 22:20:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 22:20:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:20:26,074 INFO L87 Difference]: Start difference. First operand 924 states and 1355 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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 22:20:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:33,584 INFO L93 Difference]: Finished difference Result 2353 states and 3409 transitions. [2024-11-18 22:20:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 22:20:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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 209 [2024-11-18 22:20:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:33,593 INFO L225 Difference]: With dead ends: 2353 [2024-11-18 22:20:33,594 INFO L226 Difference]: Without dead ends: 1414 [2024-11-18 22:20:33,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2024-11-18 22:20:33,597 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 761 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:33,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1357 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-18 22:20:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-18 22:20:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1013. [2024-11-18 22:20:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 906 states have (on average 1.4426048565121412) internal successors, (1307), 910 states have internal predecessors, (1307), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1487 transitions. [2024-11-18 22:20:33,660 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1487 transitions. Word has length 209 [2024-11-18 22:20:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:33,661 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1487 transitions. [2024-11-18 22:20:33,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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 22:20:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1487 transitions. [2024-11-18 22:20:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 22:20:33,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:33,663 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:20:33,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:20:33,663 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:33,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 802395968, now seen corresponding path program 1 times [2024-11-18 22:20:33,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:33,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157925819] [2024-11-18 22:20:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:37,911 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 22:20:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157925819] [2024-11-18 22:20:37,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157925819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:37,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:37,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:20:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405478162] [2024-11-18 22:20:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:37,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:20:37,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:20:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:20:37,914 INFO L87 Difference]: Start difference. First operand 1013 states and 1487 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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 22:20:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:41,290 INFO L93 Difference]: Finished difference Result 2454 states and 3548 transitions. [2024-11-18 22:20:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:20:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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 209 [2024-11-18 22:20:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:41,298 INFO L225 Difference]: With dead ends: 2454 [2024-11-18 22:20:41,298 INFO L226 Difference]: Without dead ends: 1407 [2024-11-18 22:20:41,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:20:41,301 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 626 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:41,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 874 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 22:20:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-18 22:20:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 983. [2024-11-18 22:20:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 876 states have (on average 1.447488584474886) internal successors, (1268), 880 states have internal predecessors, (1268), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1448 transitions. [2024-11-18 22:20:41,375 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1448 transitions. Word has length 209 [2024-11-18 22:20:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:41,376 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1448 transitions. [2024-11-18 22:20:41,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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 22:20:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1448 transitions. [2024-11-18 22:20:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 22:20:41,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:41,378 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, 1, 1, 1, 1, 1, 1] [2024-11-18 22:20:41,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:20:41,378 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash -919736964, now seen corresponding path program 1 times [2024-11-18 22:20:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668420253] [2024-11-18 22:20:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:20:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:20:45,654 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 22:20:45,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:20:45,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668420253] [2024-11-18 22:20:45,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668420253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:20:45,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:20:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 22:20:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299082544] [2024-11-18 22:20:45,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:20:45,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 22:20:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:20:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 22:20:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:20:45,657 INFO L87 Difference]: Start difference. First operand 983 states and 1448 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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 22:20:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:20:53,885 INFO L93 Difference]: Finished difference Result 2523 states and 3663 transitions. [2024-11-18 22:20:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:20:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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 209 [2024-11-18 22:20:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:20:53,893 INFO L225 Difference]: With dead ends: 2523 [2024-11-18 22:20:53,894 INFO L226 Difference]: Without dead ends: 1531 [2024-11-18 22:20:53,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2024-11-18 22:20:53,898 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 589 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:20:53,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1741 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-18 22:20:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-11-18 22:20:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1039. [2024-11-18 22:20:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 932 states have (on average 1.444206008583691) internal successors, (1346), 936 states have internal predecessors, (1346), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-18 22:20:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1526 transitions. [2024-11-18 22:20:53,985 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1526 transitions. Word has length 209 [2024-11-18 22:20:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:20:53,985 INFO L471 AbstractCegarLoop]: Abstraction has 1039 states and 1526 transitions. [2024-11-18 22:20:53,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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 22:20:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1526 transitions. [2024-11-18 22:20:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 22:20:53,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:20:53,988 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, 1, 1, 1, 1, 1, 1] [2024-11-18 22:20:53,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:20:53,988 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:20:53,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:20:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -218672386, now seen corresponding path program 1 times [2024-11-18 22:20:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:20:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49505161] [2024-11-18 22:20:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:20:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms