./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-31.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-while_file-31.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 6172bcf472a886b23306a046bd0a20ff775f8e0d008adc455f4ef56119e5614f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:32:32,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:32:32,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:32:32,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:32:32,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:32:32,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:32:32,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:32:32,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:32:32,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:32:32,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:32:32,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:32:32,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:32:32,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:32:32,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:32:32,947 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:32:32,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:32:32,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:32:32,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:32:32,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:32:32,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:32:32,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:32:32,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:32:32,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:32:32,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:32:32,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:32:32,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:32:32,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:32:32,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:32:32,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:32:32,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:32:32,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:32:32,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:32:32,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:32:32,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:32:32,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:32:32,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:32:32,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:32:32,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:32:32,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:32:32,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:32:32,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:32:32,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:32:32,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6172bcf472a886b23306a046bd0a20ff775f8e0d008adc455f4ef56119e5614f [2024-11-18 22:32:33,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:32:33,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:32:33,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:32:33,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:32:33,214 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:32:33,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-31.i [2024-11-18 22:32:34,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:32:34,767 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:32:34,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-31.i [2024-11-18 22:32:34,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43be55aff/5c56b623385742658a8d7d928976801f/FLAG718afb1a4 [2024-11-18 22:32:35,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43be55aff/5c56b623385742658a8d7d928976801f [2024-11-18 22:32:35,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:32:35,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:32:35,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:32:35,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:32:35,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:32:35,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c4d1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35, skipping insertion in model container [2024-11-18 22:32:35,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:32:35,358 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-while_file-31.i[916,929] [2024-11-18 22:32:35,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:32:35,438 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:32:35,450 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-while_file-31.i[916,929] [2024-11-18 22:32:35,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:32:35,505 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:32:35,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35 WrapperNode [2024-11-18 22:32:35,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:32:35,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:32:35,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:32:35,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:32:35,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,573 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2024-11-18 22:32:35,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:32:35,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:32:35,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:32:35,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:32:35,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,628 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 22:32:35,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:32:35,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:32:35,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:32:35,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:32:35,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (1/1) ... [2024-11-18 22:32:35,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:32:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:35,704 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 22:32:35,707 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 22:32:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:32:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:32:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:32:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:32:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:32:35,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:32:35,854 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:32:35,856 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:32:36,315 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-18 22:32:36,315 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:32:36,333 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:32:36,334 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:32:36,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:32:36 BoogieIcfgContainer [2024-11-18 22:32:36,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:32:36,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:32:36,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:32:36,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:32:36,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:32:35" (1/3) ... [2024-11-18 22:32:36,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:32:36, skipping insertion in model container [2024-11-18 22:32:36,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:35" (2/3) ... [2024-11-18 22:32:36,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:32:36, skipping insertion in model container [2024-11-18 22:32:36,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:32:36" (3/3) ... [2024-11-18 22:32:36,345 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-31.i [2024-11-18 22:32:36,361 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:32:36,361 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:32:36,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:32:36,422 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;@23423997, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:32:36,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:32:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 78 states have internal predecessors, (113), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 22:32:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:32:36,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:36,448 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:36,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:36,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662336, now seen corresponding path program 1 times [2024-11-18 22:32:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:36,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333105352] [2024-11-18 22:32:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-18 22:32:36,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:36,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333105352] [2024-11-18 22:32:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333105352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:32:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893265899] [2024-11-18 22:32:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:36,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:36,795 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 22:32:36,797 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 22:32:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:36,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:32:36,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:32:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-18 22:32:37,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:32:37,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893265899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:37,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:32:37,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:32:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696365583] [2024-11-18 22:32:37,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:37,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:32:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:32:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:32:37,068 INFO L87 Difference]: Start difference. First operand has 106 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 78 states have internal predecessors, (113), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:32:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:37,128 INFO L93 Difference]: Finished difference Result 195 states and 335 transitions. [2024-11-18 22:32:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:32:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2024-11-18 22:32:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:37,142 INFO L225 Difference]: With dead ends: 195 [2024-11-18 22:32:37,142 INFO L226 Difference]: Without dead ends: 92 [2024-11-18 22:32:37,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:32:37,148 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:37,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:32:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-18 22:32:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-18 22:32:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 22:32:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 142 transitions. [2024-11-18 22:32:37,193 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 142 transitions. Word has length 172 [2024-11-18 22:32:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:37,194 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 142 transitions. [2024-11-18 22:32:37,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:32:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 142 transitions. [2024-11-18 22:32:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:32:37,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:37,197 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:37,216 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 22:32:37,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:32:37,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:37,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash -851281144, now seen corresponding path program 1 times [2024-11-18 22:32:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543015172] [2024-11-18 22:32:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543015172] [2024-11-18 22:32:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543015172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:32:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118408337] [2024-11-18 22:32:37,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:37,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:32:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:32:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:32:37,875 INFO L87 Difference]: Start difference. First operand 92 states and 142 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:38,084 INFO L93 Difference]: Finished difference Result 271 states and 421 transitions. [2024-11-18 22:32:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:32:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 172 [2024-11-18 22:32:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:38,087 INFO L225 Difference]: With dead ends: 271 [2024-11-18 22:32:38,088 INFO L226 Difference]: Without dead ends: 182 [2024-11-18 22:32:38,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:32:38,089 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 91 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:38,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 382 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:32:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-18 22:32:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2024-11-18 22:32:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 96 states have internal predecessors, (131), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:32:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 235 transitions. [2024-11-18 22:32:38,127 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 235 transitions. Word has length 172 [2024-11-18 22:32:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:38,128 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 235 transitions. [2024-11-18 22:32:38,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 235 transitions. [2024-11-18 22:32:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 22:32:38,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:38,133 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:38,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:32:38,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:38,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1536479290, now seen corresponding path program 1 times [2024-11-18 22:32:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:38,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366469395] [2024-11-18 22:32:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366469395] [2024-11-18 22:32:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366469395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:32:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745977280] [2024-11-18 22:32:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:38,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:32:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:32:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:32:38,441 INFO L87 Difference]: Start difference. First operand 151 states and 235 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:38,613 INFO L93 Difference]: Finished difference Result 271 states and 420 transitions. [2024-11-18 22:32:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:32:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-18 22:32:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:38,617 INFO L225 Difference]: With dead ends: 271 [2024-11-18 22:32:38,619 INFO L226 Difference]: Without dead ends: 182 [2024-11-18 22:32:38,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:32:38,621 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 89 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:38,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 384 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:32:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-18 22:32:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2024-11-18 22:32:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 97 states have internal predecessors, (132), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:32:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 236 transitions. [2024-11-18 22:32:38,654 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 236 transitions. Word has length 173 [2024-11-18 22:32:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:38,655 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 236 transitions. [2024-11-18 22:32:38,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 236 transitions. [2024-11-18 22:32:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 22:32:38,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:38,661 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:38,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:32:38,661 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:38,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1460579429, now seen corresponding path program 1 times [2024-11-18 22:32:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:38,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893326511] [2024-11-18 22:32:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893326511] [2024-11-18 22:32:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893326511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:39,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:39,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:32:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056812554] [2024-11-18 22:32:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:39,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:32:39,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:32:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:32:39,059 INFO L87 Difference]: Start difference. First operand 152 states and 236 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:39,212 INFO L93 Difference]: Finished difference Result 290 states and 449 transitions. [2024-11-18 22:32:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:32:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-11-18 22:32:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:39,216 INFO L225 Difference]: With dead ends: 290 [2024-11-18 22:32:39,216 INFO L226 Difference]: Without dead ends: 190 [2024-11-18 22:32:39,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:32:39,217 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 96 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:39,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 395 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:32:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-18 22:32:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2024-11-18 22:32:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 99 states have internal predecessors, (130), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:32:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 234 transitions. [2024-11-18 22:32:39,243 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 234 transitions. Word has length 174 [2024-11-18 22:32:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:39,245 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 234 transitions. [2024-11-18 22:32:39,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 234 transitions. [2024-11-18 22:32:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:32:39,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:39,248 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:39,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:32:39,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:39,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -760956775, now seen corresponding path program 1 times [2024-11-18 22:32:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902720779] [2024-11-18 22:32:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:39,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:39,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:39,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902720779] [2024-11-18 22:32:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902720779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:39,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:32:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713163003] [2024-11-18 22:32:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:39,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:32:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:32:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:32:39,529 INFO L87 Difference]: Start difference. First operand 154 states and 234 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:39,727 INFO L93 Difference]: Finished difference Result 410 states and 625 transitions. [2024-11-18 22:32:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:32:39,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:32:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:39,732 INFO L225 Difference]: With dead ends: 410 [2024-11-18 22:32:39,732 INFO L226 Difference]: Without dead ends: 312 [2024-11-18 22:32:39,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:32:39,735 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 213 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:39,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 656 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:32:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-18 22:32:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 224. [2024-11-18 22:32:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 142 states have (on average 1.2816901408450705) internal successors, (182), 142 states have internal predecessors, (182), 78 states have call successors, (78), 3 states have call predecessors, (78), 3 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-18 22:32:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 338 transitions. [2024-11-18 22:32:39,770 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 338 transitions. Word has length 175 [2024-11-18 22:32:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:39,771 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 338 transitions. [2024-11-18 22:32:39,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 338 transitions. [2024-11-18 22:32:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:32:39,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:39,773 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:39,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:32:39,773 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:39,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash -542102057, now seen corresponding path program 1 times [2024-11-18 22:32:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:39,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250064675] [2024-11-18 22:32:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:39,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250064675] [2024-11-18 22:32:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250064675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:42,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:32:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554953765] [2024-11-18 22:32:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:42,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:32:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:32:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:32:42,508 INFO L87 Difference]: Start difference. First operand 224 states and 338 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:43,123 INFO L93 Difference]: Finished difference Result 526 states and 781 transitions. [2024-11-18 22:32:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:32:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:32:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:43,125 INFO L225 Difference]: With dead ends: 526 [2024-11-18 22:32:43,125 INFO L226 Difference]: Without dead ends: 364 [2024-11-18 22:32:43,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:32:43,127 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 151 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:43,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 640 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:32:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-18 22:32:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 321. [2024-11-18 22:32:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 218 states have (on average 1.31651376146789) internal successors, (287), 220 states have internal predecessors, (287), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 22:32:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 479 transitions. [2024-11-18 22:32:43,154 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 479 transitions. Word has length 175 [2024-11-18 22:32:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:43,155 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 479 transitions. [2024-11-18 22:32:43,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 479 transitions. [2024-11-18 22:32:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:32:43,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:43,157 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:43,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:32:43,157 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:43,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash 137956313, now seen corresponding path program 1 times [2024-11-18 22:32:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569721284] [2024-11-18 22:32:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:43,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:43,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569721284] [2024-11-18 22:32:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569721284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:32:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032459841] [2024-11-18 22:32:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:43,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:32:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:32:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:32:43,489 INFO L87 Difference]: Start difference. First operand 321 states and 479 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:43,921 INFO L93 Difference]: Finished difference Result 755 states and 1125 transitions. [2024-11-18 22:32:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:32:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:32:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:43,927 INFO L225 Difference]: With dead ends: 755 [2024-11-18 22:32:43,927 INFO L226 Difference]: Without dead ends: 500 [2024-11-18 22:32:43,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:32:43,929 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 308 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:43,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 660 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:32:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-18 22:32:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 478. [2024-11-18 22:32:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 317 states have (on average 1.2870662460567823) internal successors, (408), 321 states have internal predecessors, (408), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:32:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 704 transitions. [2024-11-18 22:32:43,974 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 704 transitions. Word has length 175 [2024-11-18 22:32:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:43,975 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 704 transitions. [2024-11-18 22:32:43,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 704 transitions. [2024-11-18 22:32:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:32:43,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:43,977 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:43,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:32:43,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:43,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1010169127, now seen corresponding path program 1 times [2024-11-18 22:32:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857570568] [2024-11-18 22:32:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:47,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:47,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857570568] [2024-11-18 22:32:47,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857570568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:47,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:32:47,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079215984] [2024-11-18 22:32:47,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:47,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:32:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:32:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:32:47,079 INFO L87 Difference]: Start difference. First operand 478 states and 704 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:47,807 INFO L93 Difference]: Finished difference Result 876 states and 1276 transitions. [2024-11-18 22:32:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:32:47,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:32:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:47,812 INFO L225 Difference]: With dead ends: 876 [2024-11-18 22:32:47,813 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 22:32:47,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:32:47,815 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 136 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:47,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 666 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:32:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 22:32:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 476. [2024-11-18 22:32:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 315 states have (on average 1.2857142857142858) internal successors, (405), 319 states have internal predecessors, (405), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:32:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 701 transitions. [2024-11-18 22:32:47,857 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 701 transitions. Word has length 175 [2024-11-18 22:32:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:47,858 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 701 transitions. [2024-11-18 22:32:47,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 701 transitions. [2024-11-18 22:32:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:32:47,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:47,862 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:47,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:32:47,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:47,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash -258491915, now seen corresponding path program 1 times [2024-11-18 22:32:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:47,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082553966] [2024-11-18 22:32:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:47,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:50,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:50,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082553966] [2024-11-18 22:32:50,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082553966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:50,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:50,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:32:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702989959] [2024-11-18 22:32:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:50,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:32:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:32:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:32:50,273 INFO L87 Difference]: Start difference. First operand 476 states and 701 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:50,895 INFO L93 Difference]: Finished difference Result 870 states and 1276 transitions. [2024-11-18 22:32:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:32:50,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:32:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:50,899 INFO L225 Difference]: With dead ends: 870 [2024-11-18 22:32:50,900 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 22:32:50,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:32:50,904 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 65 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:50,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 497 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:32:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 22:32:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 490. [2024-11-18 22:32:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 329 states have (on average 1.3069908814589666) internal successors, (430), 333 states have internal predecessors, (430), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:32:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 726 transitions. [2024-11-18 22:32:50,939 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 726 transitions. Word has length 176 [2024-11-18 22:32:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:50,939 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 726 transitions. [2024-11-18 22:32:50,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 726 transitions. [2024-11-18 22:32:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:32:50,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:50,943 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:50,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:32:50,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:50,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1406617355, now seen corresponding path program 1 times [2024-11-18 22:32:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105330111] [2024-11-18 22:32:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:51,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105330111] [2024-11-18 22:32:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105330111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:51,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:51,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:32:51,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712348719] [2024-11-18 22:32:51,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:51,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:32:51,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:51,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:32:51,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:32:51,709 INFO L87 Difference]: Start difference. First operand 490 states and 726 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:52,781 INFO L93 Difference]: Finished difference Result 892 states and 1316 transitions. [2024-11-18 22:32:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 22:32:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:32:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:52,786 INFO L225 Difference]: With dead ends: 892 [2024-11-18 22:32:52,787 INFO L226 Difference]: Without dead ends: 562 [2024-11-18 22:32:52,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:32:52,788 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 517 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:52,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 991 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:32:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-18 22:32:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 508. [2024-11-18 22:32:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 347 states have (on average 1.314121037463977) internal successors, (456), 351 states have internal predecessors, (456), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:32:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 752 transitions. [2024-11-18 22:32:52,820 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 752 transitions. Word has length 176 [2024-11-18 22:32:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:52,821 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 752 transitions. [2024-11-18 22:32:52,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:32:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 752 transitions. [2024-11-18 22:32:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:32:52,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:52,823 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:52,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:32:52,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:52,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash -726558985, now seen corresponding path program 1 times [2024-11-18 22:32:52,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:52,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864613236] [2024-11-18 22:32:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:32:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864613236] [2024-11-18 22:32:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864613236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:58,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:58,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:32:58,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194715903] [2024-11-18 22:32:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:58,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:32:58,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:32:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:32:58,083 INFO L87 Difference]: Start difference. First operand 508 states and 752 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:05,491 INFO L93 Difference]: Finished difference Result 876 states and 1295 transitions. [2024-11-18 22:33:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:33:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:33:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:05,498 INFO L225 Difference]: With dead ends: 876 [2024-11-18 22:33:05,498 INFO L226 Difference]: Without dead ends: 553 [2024-11-18 22:33:05,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:33:05,500 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 465 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:05,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 971 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 22:33:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-18 22:33:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 510. [2024-11-18 22:33:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 349 states have (on average 1.3180515759312321) internal successors, (460), 353 states have internal predecessors, (460), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 756 transitions. [2024-11-18 22:33:05,533 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 756 transitions. Word has length 176 [2024-11-18 22:33:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:05,533 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 756 transitions. [2024-11-18 22:33:05,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:05,533 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 756 transitions. [2024-11-18 22:33:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:33:05,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:05,535 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:05,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:33:05,535 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:05,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash -326477, now seen corresponding path program 1 times [2024-11-18 22:33:05,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:05,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346672490] [2024-11-18 22:33:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346672490] [2024-11-18 22:33:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346672490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:07,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 22:33:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130966271] [2024-11-18 22:33:07,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:07,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:33:07,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:33:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:33:07,426 INFO L87 Difference]: Start difference. First operand 510 states and 756 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:08,082 INFO L93 Difference]: Finished difference Result 1057 states and 1561 transitions. [2024-11-18 22:33:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:33:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:33:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:08,086 INFO L225 Difference]: With dead ends: 1057 [2024-11-18 22:33:08,086 INFO L226 Difference]: Without dead ends: 734 [2024-11-18 22:33:08,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:33:08,088 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 214 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:08,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 565 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:33:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-18 22:33:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 561. [2024-11-18 22:33:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 400 states have (on average 1.3425) internal successors, (537), 404 states have internal predecessors, (537), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 833 transitions. [2024-11-18 22:33:08,121 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 833 transitions. Word has length 176 [2024-11-18 22:33:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:08,122 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 833 transitions. [2024-11-18 22:33:08,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 833 transitions. [2024-11-18 22:33:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:33:08,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:08,123 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:08,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:33:08,123 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:08,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1148451917, now seen corresponding path program 1 times [2024-11-18 22:33:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863785230] [2024-11-18 22:33:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:08,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863785230] [2024-11-18 22:33:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863785230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:08,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:33:08,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618468508] [2024-11-18 22:33:08,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:08,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:33:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:08,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:33:08,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:33:08,868 INFO L87 Difference]: Start difference. First operand 561 states and 833 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:09,792 INFO L93 Difference]: Finished difference Result 974 states and 1446 transitions. [2024-11-18 22:33:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:33:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:33:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:09,797 INFO L225 Difference]: With dead ends: 974 [2024-11-18 22:33:09,800 INFO L226 Difference]: Without dead ends: 601 [2024-11-18 22:33:09,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:33:09,802 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 353 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:09,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 856 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:33:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-18 22:33:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 562. [2024-11-18 22:33:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 401 states have (on average 1.341645885286783) internal successors, (538), 405 states have internal predecessors, (538), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 834 transitions. [2024-11-18 22:33:09,834 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 834 transitions. Word has length 176 [2024-11-18 22:33:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:09,835 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 834 transitions. [2024-11-18 22:33:09,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 834 transitions. [2024-11-18 22:33:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:33:09,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:09,836 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:09,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:33:09,836 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:09,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash -468393547, now seen corresponding path program 1 times [2024-11-18 22:33:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673893158] [2024-11-18 22:33:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:09,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673893158] [2024-11-18 22:33:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673893158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:14,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 22:33:14,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921430208] [2024-11-18 22:33:14,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:14,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 22:33:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 22:33:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:33:14,061 INFO L87 Difference]: Start difference. First operand 562 states and 834 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:17,170 INFO L93 Difference]: Finished difference Result 1016 states and 1495 transitions. [2024-11-18 22:33:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 22:33:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:33:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:17,175 INFO L225 Difference]: With dead ends: 1016 [2024-11-18 22:33:17,175 INFO L226 Difference]: Without dead ends: 649 [2024-11-18 22:33:17,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 22:33:17,178 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 612 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:17,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1423 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 22:33:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-18 22:33:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 562. [2024-11-18 22:33:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 401 states have (on average 1.341645885286783) internal successors, (538), 405 states have internal predecessors, (538), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 834 transitions. [2024-11-18 22:33:17,207 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 834 transitions. Word has length 176 [2024-11-18 22:33:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:17,207 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 834 transitions. [2024-11-18 22:33:17,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 834 transitions. [2024-11-18 22:33:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:17,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:17,208 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:17,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:33:17,208 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:17,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 973635452, now seen corresponding path program 1 times [2024-11-18 22:33:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634602162] [2024-11-18 22:33:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634602162] [2024-11-18 22:33:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634602162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:33:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568576371] [2024-11-18 22:33:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:20,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:33:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:33:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:33:20,712 INFO L87 Difference]: Start difference. First operand 562 states and 834 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:22,425 INFO L93 Difference]: Finished difference Result 1064 states and 1561 transitions. [2024-11-18 22:33:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 22:33:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:22,430 INFO L225 Difference]: With dead ends: 1064 [2024-11-18 22:33:22,430 INFO L226 Difference]: Without dead ends: 697 [2024-11-18 22:33:22,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 22:33:22,434 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 485 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:22,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1711 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 22:33:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-18 22:33:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 580. [2024-11-18 22:33:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 419 states have (on average 1.3484486873508352) internal successors, (565), 423 states have internal predecessors, (565), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 861 transitions. [2024-11-18 22:33:22,465 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 861 transitions. Word has length 177 [2024-11-18 22:33:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:22,466 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 861 transitions. [2024-11-18 22:33:22,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 861 transitions. [2024-11-18 22:33:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:22,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:22,467 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:22,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:33:22,467 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:22,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1915040966, now seen corresponding path program 1 times [2024-11-18 22:33:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:22,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554020085] [2024-11-18 22:33:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:23,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554020085] [2024-11-18 22:33:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554020085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:23,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:33:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600122113] [2024-11-18 22:33:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:23,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:33:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:33:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:33:23,875 INFO L87 Difference]: Start difference. First operand 580 states and 861 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:25,091 INFO L93 Difference]: Finished difference Result 1284 states and 1887 transitions. [2024-11-18 22:33:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 22:33:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:25,098 INFO L225 Difference]: With dead ends: 1284 [2024-11-18 22:33:25,098 INFO L226 Difference]: Without dead ends: 917 [2024-11-18 22:33:25,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-11-18 22:33:25,101 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 600 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:25,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1732 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:33:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-18 22:33:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 582. [2024-11-18 22:33:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 421 states have (on average 1.3491686460807601) internal successors, (568), 425 states have internal predecessors, (568), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 864 transitions. [2024-11-18 22:33:25,141 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 864 transitions. Word has length 177 [2024-11-18 22:33:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:25,141 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 864 transitions. [2024-11-18 22:33:25,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 864 transitions. [2024-11-18 22:33:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:25,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:25,142 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:25,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 22:33:25,143 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:25,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1231800890, now seen corresponding path program 1 times [2024-11-18 22:33:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230183298] [2024-11-18 22:33:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:25,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:26,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230183298] [2024-11-18 22:33:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230183298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:26,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:33:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628892393] [2024-11-18 22:33:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:26,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:33:26,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:33:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:33:26,546 INFO L87 Difference]: Start difference. First operand 582 states and 864 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:27,702 INFO L93 Difference]: Finished difference Result 1112 states and 1634 transitions. [2024-11-18 22:33:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 22:33:27,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:27,706 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 22:33:27,706 INFO L226 Difference]: Without dead ends: 745 [2024-11-18 22:33:27,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-18 22:33:27,708 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 523 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:27,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1045 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:33:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-11-18 22:33:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 583. [2024-11-18 22:33:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 422 states have (on average 1.3507109004739337) internal successors, (570), 426 states have internal predecessors, (570), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 866 transitions. [2024-11-18 22:33:27,741 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 866 transitions. Word has length 177 [2024-11-18 22:33:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:27,741 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 866 transitions. [2024-11-18 22:33:27,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 866 transitions. [2024-11-18 22:33:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:27,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:27,742 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:27,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 22:33:27,742 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:27,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1911859260, now seen corresponding path program 1 times [2024-11-18 22:33:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39109344] [2024-11-18 22:33:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:27,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:32,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:32,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39109344] [2024-11-18 22:33:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39109344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:33:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387238691] [2024-11-18 22:33:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:32,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:33:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:33:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:33:32,599 INFO L87 Difference]: Start difference. First operand 583 states and 866 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:38,821 INFO L93 Difference]: Finished difference Result 1039 states and 1529 transitions. [2024-11-18 22:33:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 22:33:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:38,826 INFO L225 Difference]: With dead ends: 1039 [2024-11-18 22:33:38,827 INFO L226 Difference]: Without dead ends: 672 [2024-11-18 22:33:38,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 22:33:38,828 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 463 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:38,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1829 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-18 22:33:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-18 22:33:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 583. [2024-11-18 22:33:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 422 states have (on average 1.3507109004739337) internal successors, (570), 426 states have internal predecessors, (570), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 866 transitions. [2024-11-18 22:33:38,861 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 866 transitions. Word has length 177 [2024-11-18 22:33:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:38,861 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 866 transitions. [2024-11-18 22:33:38,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 866 transitions. [2024-11-18 22:33:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:38,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:38,862 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:38,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 22:33:38,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:38,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1396337278, now seen corresponding path program 1 times [2024-11-18 22:33:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215625812] [2024-11-18 22:33:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215625812] [2024-11-18 22:33:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215625812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:38,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:33:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630066621] [2024-11-18 22:33:38,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:38,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:33:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:33:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:33:38,917 INFO L87 Difference]: Start difference. First operand 583 states and 866 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:38,981 INFO L93 Difference]: Finished difference Result 1195 states and 1769 transitions. [2024-11-18 22:33:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:33:38,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:38,986 INFO L225 Difference]: With dead ends: 1195 [2024-11-18 22:33:38,986 INFO L226 Difference]: Without dead ends: 738 [2024-11-18 22:33:38,988 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 22:33:38,988 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 122 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:38,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 312 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:33:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-18 22:33:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 564. [2024-11-18 22:33:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 403 states have (on average 1.3250620347394542) internal successors, (534), 407 states have internal predecessors, (534), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:33:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 830 transitions. [2024-11-18 22:33:39,026 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 830 transitions. Word has length 177 [2024-11-18 22:33:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:39,028 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 830 transitions. [2024-11-18 22:33:39,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 830 transitions. [2024-11-18 22:33:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:39,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:39,030 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:39,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 22:33:39,030 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:39,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:39,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1047514275, now seen corresponding path program 1 times [2024-11-18 22:33:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910182594] [2024-11-18 22:33:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910182594] [2024-11-18 22:33:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910182594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:39,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:33:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647739038] [2024-11-18 22:33:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:39,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:33:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:33:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:33:39,190 INFO L87 Difference]: Start difference. First operand 564 states and 830 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:33:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:39,626 INFO L93 Difference]: Finished difference Result 2341 states and 3463 transitions. [2024-11-18 22:33:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:33:39,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 177 [2024-11-18 22:33:39,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:39,635 INFO L225 Difference]: With dead ends: 2341 [2024-11-18 22:33:39,635 INFO L226 Difference]: Without dead ends: 1975 [2024-11-18 22:33:39,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:33:39,639 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 775 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:39,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 631 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:33:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2024-11-18 22:33:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1444. [2024-11-18 22:33:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1019 states have (on average 1.3140333660451422) internal successors, (1339), 1031 states have internal predecessors, (1339), 392 states have call successors, (392), 32 states have call predecessors, (392), 32 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 22:33:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2123 transitions. [2024-11-18 22:33:39,744 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2123 transitions. Word has length 177 [2024-11-18 22:33:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:39,745 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 2123 transitions. [2024-11-18 22:33:39,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:33:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2123 transitions. [2024-11-18 22:33:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:39,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:39,746 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:39,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 22:33:39,746 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:39,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 727493087, now seen corresponding path program 1 times [2024-11-18 22:33:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:39,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145736064] [2024-11-18 22:33:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:39,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:33:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145736064] [2024-11-18 22:33:42,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145736064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:33:42,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:33:42,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:33:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504571690] [2024-11-18 22:33:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:33:42,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:33:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:33:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:33:42,976 INFO L87 Difference]: Start difference. First operand 1444 states and 2123 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:43,667 INFO L93 Difference]: Finished difference Result 2646 states and 3859 transitions. [2024-11-18 22:33:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:33:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:33:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:43,677 INFO L225 Difference]: With dead ends: 2646 [2024-11-18 22:33:43,677 INFO L226 Difference]: Without dead ends: 1672 [2024-11-18 22:33:43,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:33:43,684 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 82 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:43,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 533 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:33:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-11-18 22:33:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1459. [2024-11-18 22:33:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1034 states have (on average 1.321083172147002) internal successors, (1366), 1046 states have internal predecessors, (1366), 392 states have call successors, (392), 32 states have call predecessors, (392), 32 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 22:33:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2150 transitions. [2024-11-18 22:33:43,791 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2150 transitions. Word has length 177 [2024-11-18 22:33:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:43,792 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 2150 transitions. [2024-11-18 22:33:43,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:33:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2150 transitions. [2024-11-18 22:33:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:33:43,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:43,793 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:43,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 22:33:43,793 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:43,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:43,794 INFO L85 PathProgramCache]: Analyzing trace with hash -954448050, now seen corresponding path program 1 times [2024-11-18 22:33:43,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:43,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500178542] [2024-11-18 22:33:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-18 22:33:44,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:44,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500178542] [2024-11-18 22:33:44,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500178542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:33:44,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386794942] [2024-11-18 22:33:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:44,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:33:44,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:33:44,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:33:44,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:33:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:44,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 22:33:44,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:33:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 619 proven. 48 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2024-11-18 22:33:44,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:33:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-18 22:33:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386794942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:33:44,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:33:44,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-18 22:33:44,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800546076] [2024-11-18 22:33:44,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:33:44,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:33:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:33:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:33:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:33:44,586 INFO L87 Difference]: Start difference. First operand 1459 states and 2150 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 22:33:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:33:45,396 INFO L93 Difference]: Finished difference Result 2841 states and 4132 transitions. [2024-11-18 22:33:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 22:33:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 177 [2024-11-18 22:33:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:33:45,405 INFO L225 Difference]: With dead ends: 2841 [2024-11-18 22:33:45,405 INFO L226 Difference]: Without dead ends: 1738 [2024-11-18 22:33:45,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:33:45,408 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 264 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:33:45,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 892 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:33:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2024-11-18 22:33:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1452. [2024-11-18 22:33:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1014 states have (on average 1.2928994082840237) internal successors, (1311), 1026 states have internal predecessors, (1311), 392 states have call successors, (392), 45 states have call predecessors, (392), 45 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 22:33:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2095 transitions. [2024-11-18 22:33:45,562 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2095 transitions. Word has length 177 [2024-11-18 22:33:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:33:45,562 INFO L471 AbstractCegarLoop]: Abstraction has 1452 states and 2095 transitions. [2024-11-18 22:33:45,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 22:33:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2095 transitions. [2024-11-18 22:33:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 22:33:45,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:33:45,564 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:45,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 22:33:45,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 22:33:45,765 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:33:45,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:33:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1011958764, now seen corresponding path program 1 times [2024-11-18 22:33:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:33:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710310367] [2024-11-18 22:33:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:33:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 21 proven. 123 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-18 22:33:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:33:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710310367] [2024-11-18 22:33:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710310367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:33:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803443182] [2024-11-18 22:33:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:33:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:33:46,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:33:46,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:33:46,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:33:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:33:47,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 22:33:47,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:33:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 470 proven. 117 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2024-11-18 22:33:48,623 INFO L311 TraceCheckSpWp]: Computing backward predicates...