./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65e290fb975399bc2cc283273eaab9fa300db5fe57e6fb279b59522887532a83 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:08:13,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:08:13,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:08:13,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:08:13,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:08:13,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:08:13,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:08:13,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:08:13,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:08:13,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:08:13,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:08:13,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:08:13,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:08:13,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:08:13,137 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:08:13,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:08:13,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:08:13,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:08:13,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:08:13,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:08:13,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:08:13,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:08:13,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:08:13,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:08:13,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:08:13,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:08:13,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:08:13,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:08:13,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:08:13,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:08:13,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:08:13,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:08:13,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:08:13,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:08:13,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:08:13,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:08:13,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:08:13,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:08:13,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:08:13,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:08:13,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:08:13,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:08:13,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65e290fb975399bc2cc283273eaab9fa300db5fe57e6fb279b59522887532a83 [2024-11-18 21:08:13,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:08:13,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:08:13,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:08:13,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:08:13,459 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:08:13,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2024-11-18 21:08:14,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:08:15,216 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:08:15,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2024-11-18 21:08:15,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efef97c67/a9a9b2ef3d924a36be166202346a5d9f/FLAG1f3b1ebc9 [2024-11-18 21:08:15,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efef97c67/a9a9b2ef3d924a36be166202346a5d9f [2024-11-18 21:08:15,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:08:15,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:08:15,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:08:15,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:08:15,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:08:15,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:15" (1/1) ... [2024-11-18 21:08:15,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600fbd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:15, skipping insertion in model container [2024-11-18 21:08:15,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:15" (1/1) ... [2024-11-18 21:08:15,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:08:15,816 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i[919,932] [2024-11-18 21:08:15,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:08:15,946 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:08:15,960 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i[919,932] [2024-11-18 21:08:16,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:08:16,031 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:08:16,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16 WrapperNode [2024-11-18 21:08:16,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:08:16,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:08:16,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:08:16,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:08:16,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,119 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2024-11-18 21:08:16,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:08:16,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:08:16,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:08:16,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:08:16,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,159 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 21:08:16,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:08:16,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:08:16,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:08:16,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:08:16,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (1/1) ... [2024-11-18 21:08:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:08:16,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:08:16,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 21:08:16,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 21:08:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:08:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:08:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:08:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:08:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:08:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:08:16,365 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:08:16,366 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:08:16,762 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 21:08:16,762 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:08:16,780 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:08:16,780 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:08:16,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:16 BoogieIcfgContainer [2024-11-18 21:08:16,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:08:16,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:08:16,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:08:16,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:08:16,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:08:15" (1/3) ... [2024-11-18 21:08:16,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada28f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:16, skipping insertion in model container [2024-11-18 21:08:16,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:16" (2/3) ... [2024-11-18 21:08:16,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada28f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:16, skipping insertion in model container [2024-11-18 21:08:16,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:16" (3/3) ... [2024-11-18 21:08:16,793 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2024-11-18 21:08:16,812 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:08:16,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:08:16,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:08:16,882 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;@6296051c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:08:16,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:08:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 21:08:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 21:08:16,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:16,903 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:16,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:16,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 790620788, now seen corresponding path program 1 times [2024-11-18 21:08:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418524544] [2024-11-18 21:08:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 21:08:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418524544] [2024-11-18 21:08:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418524544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:08:17,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115573609] [2024-11-18 21:08:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:17,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:08:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:08:17,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:08:17,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 21:08:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:17,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:08:17,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:08:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 21:08:17,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:08:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115573609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:08:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:08:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306925374] [2024-11-18 21:08:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:17,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:08:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:08:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:08:17,706 INFO L87 Difference]: Start difference. First operand has 87 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:17,745 INFO L93 Difference]: Finished difference Result 167 states and 286 transitions. [2024-11-18 21:08:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:08:17,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 152 [2024-11-18 21:08:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:17,758 INFO L225 Difference]: With dead ends: 167 [2024-11-18 21:08:17,758 INFO L226 Difference]: Without dead ends: 83 [2024-11-18 21:08:17,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:08:17,768 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:17,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:08:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-18 21:08:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-18 21:08:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 states have internal predecessors, (84), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 21:08:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 128 transitions. [2024-11-18 21:08:17,828 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 128 transitions. Word has length 152 [2024-11-18 21:08:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:17,829 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 128 transitions. [2024-11-18 21:08:17,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2024-11-18 21:08:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 21:08:17,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:17,837 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:17,858 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 21:08:18,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 21:08:18,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:18,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 231458620, now seen corresponding path program 1 times [2024-11-18 21:08:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:18,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091827095] [2024-11-18 21:08:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091827095] [2024-11-18 21:08:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091827095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:08:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537099437] [2024-11-18 21:08:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:18,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:08:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:08:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:08:18,602 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:18,704 INFO L93 Difference]: Finished difference Result 237 states and 372 transitions. [2024-11-18 21:08:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:08:18,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 152 [2024-11-18 21:08:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:18,709 INFO L225 Difference]: With dead ends: 237 [2024-11-18 21:08:18,710 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 21:08:18,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:08:18,714 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 71 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:18,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 229 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:08:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 21:08:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 138. [2024-11-18 21:08:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 91 states have internal predecessors, (125), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 21:08:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 213 transitions. [2024-11-18 21:08:18,741 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 213 transitions. Word has length 152 [2024-11-18 21:08:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:18,741 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 213 transitions. [2024-11-18 21:08:18,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 213 transitions. [2024-11-18 21:08:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 21:08:18,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:18,744 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:18,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:08:18,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:18,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -406857361, now seen corresponding path program 1 times [2024-11-18 21:08:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:18,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555343862] [2024-11-18 21:08:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555343862] [2024-11-18 21:08:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555343862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:19,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:08:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470327491] [2024-11-18 21:08:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:19,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:08:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:08:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:08:19,087 INFO L87 Difference]: Start difference. First operand 138 states and 213 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:19,175 INFO L93 Difference]: Finished difference Result 306 states and 477 transitions. [2024-11-18 21:08:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:08:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-18 21:08:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:19,181 INFO L225 Difference]: With dead ends: 306 [2024-11-18 21:08:19,184 INFO L226 Difference]: Without dead ends: 218 [2024-11-18 21:08:19,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:08:19,185 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 84 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:19,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 235 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:08:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-18 21:08:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-11-18 21:08:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 146 states have (on average 1.3904109589041096) internal successors, (203), 146 states have internal predecessors, (203), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 335 transitions. [2024-11-18 21:08:19,231 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 335 transitions. Word has length 153 [2024-11-18 21:08:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:19,232 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 335 transitions. [2024-11-18 21:08:19,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 335 transitions. [2024-11-18 21:08:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 21:08:19,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:19,238 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:19,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:08:19,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:19,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash 231644096, now seen corresponding path program 1 times [2024-11-18 21:08:19,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:19,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793027558] [2024-11-18 21:08:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793027558] [2024-11-18 21:08:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793027558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:08:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547693215] [2024-11-18 21:08:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:20,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:08:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:08:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:08:20,065 INFO L87 Difference]: Start difference. First operand 216 states and 335 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:20,248 INFO L93 Difference]: Finished difference Result 465 states and 708 transitions. [2024-11-18 21:08:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:08:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 154 [2024-11-18 21:08:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:20,252 INFO L225 Difference]: With dead ends: 465 [2024-11-18 21:08:20,252 INFO L226 Difference]: Without dead ends: 307 [2024-11-18 21:08:20,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:08:20,258 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 113 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:20,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 303 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:08:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-18 21:08:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 255. [2024-11-18 21:08:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.3571428571428572) internal successors, (247), 182 states have internal predecessors, (247), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 379 transitions. [2024-11-18 21:08:20,311 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 379 transitions. Word has length 154 [2024-11-18 21:08:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:20,312 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 379 transitions. [2024-11-18 21:08:20,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 379 transitions. [2024-11-18 21:08:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 21:08:20,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:20,316 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:20,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:08:20,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1681486870, now seen corresponding path program 1 times [2024-11-18 21:08:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:20,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451475814] [2024-11-18 21:08:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451475814] [2024-11-18 21:08:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451475814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:20,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 21:08:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893882673] [2024-11-18 21:08:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:20,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 21:08:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 21:08:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:08:20,551 INFO L87 Difference]: Start difference. First operand 255 states and 379 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:20,962 INFO L93 Difference]: Finished difference Result 584 states and 857 transitions. [2024-11-18 21:08:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:08:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 155 [2024-11-18 21:08:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:20,967 INFO L225 Difference]: With dead ends: 584 [2024-11-18 21:08:20,967 INFO L226 Difference]: Without dead ends: 392 [2024-11-18 21:08:20,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 21:08:20,969 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 422 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:20,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 230 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:08:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-18 21:08:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 270. [2024-11-18 21:08:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 195 states have (on average 1.353846153846154) internal successors, (264), 195 states have internal predecessors, (264), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 396 transitions. [2024-11-18 21:08:21,007 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 396 transitions. Word has length 155 [2024-11-18 21:08:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:21,007 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 396 transitions. [2024-11-18 21:08:21,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 396 transitions. [2024-11-18 21:08:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 21:08:21,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:21,009 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:21,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:08:21,010 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:21,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 660418516, now seen corresponding path program 1 times [2024-11-18 21:08:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:21,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739155649] [2024-11-18 21:08:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:21,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:21,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739155649] [2024-11-18 21:08:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739155649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:21,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:08:21,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810046930] [2024-11-18 21:08:21,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:21,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:08:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:08:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:08:21,707 INFO L87 Difference]: Start difference. First operand 270 states and 396 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:21,831 INFO L93 Difference]: Finished difference Result 530 states and 781 transitions. [2024-11-18 21:08:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:08:21,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 155 [2024-11-18 21:08:21,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:21,834 INFO L225 Difference]: With dead ends: 530 [2024-11-18 21:08:21,834 INFO L226 Difference]: Without dead ends: 312 [2024-11-18 21:08:21,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:08:21,835 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 111 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:21,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 225 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:08:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-18 21:08:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2024-11-18 21:08:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 195 states have (on average 1.3487179487179488) internal successors, (263), 195 states have internal predecessors, (263), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 395 transitions. [2024-11-18 21:08:21,867 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 395 transitions. Word has length 155 [2024-11-18 21:08:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:21,867 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 395 transitions. [2024-11-18 21:08:21,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 395 transitions. [2024-11-18 21:08:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 21:08:21,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:21,869 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:21,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:08:21,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:21,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2021574575, now seen corresponding path program 1 times [2024-11-18 21:08:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116588980] [2024-11-18 21:08:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116588980] [2024-11-18 21:08:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116588980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:22,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:22,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 21:08:22,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794781759] [2024-11-18 21:08:22,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:22,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 21:08:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 21:08:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:08:22,327 INFO L87 Difference]: Start difference. First operand 270 states and 395 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:22,682 INFO L93 Difference]: Finished difference Result 575 states and 849 transitions. [2024-11-18 21:08:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:08:22,683 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 157 [2024-11-18 21:08:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:22,686 INFO L225 Difference]: With dead ends: 575 [2024-11-18 21:08:22,686 INFO L226 Difference]: Without dead ends: 369 [2024-11-18 21:08:22,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 21:08:22,688 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 307 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:22,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 318 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:08:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-18 21:08:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 313. [2024-11-18 21:08:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 238 states have (on average 1.365546218487395) internal successors, (325), 238 states have internal predecessors, (325), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 457 transitions. [2024-11-18 21:08:22,720 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 457 transitions. Word has length 157 [2024-11-18 21:08:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:22,721 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 457 transitions. [2024-11-18 21:08:22,721 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 21:08:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 457 transitions. [2024-11-18 21:08:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 21:08:22,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:22,723 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:22,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:08:22,724 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:22,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1605517333, now seen corresponding path program 1 times [2024-11-18 21:08:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:22,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233883621] [2024-11-18 21:08:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:22,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:08:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 21:08:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:08:22,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233883621] [2024-11-18 21:08:22,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233883621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:08:22,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:08:22,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:08:22,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212019779] [2024-11-18 21:08:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:08:22,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:08:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:08:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:08:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:08:22,936 INFO L87 Difference]: Start difference. First operand 313 states and 457 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:08:23,215 INFO L93 Difference]: Finished difference Result 843 states and 1236 transitions. [2024-11-18 21:08:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:08:23,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 157 [2024-11-18 21:08:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:08:23,219 INFO L225 Difference]: With dead ends: 843 [2024-11-18 21:08:23,220 INFO L226 Difference]: Without dead ends: 636 [2024-11-18 21:08:23,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:08:23,221 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 197 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:08:23,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 561 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:08:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-18 21:08:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 349. [2024-11-18 21:08:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 274 states have (on average 1.3795620437956204) internal successors, (378), 274 states have internal predecessors, (378), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 21:08:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 510 transitions. [2024-11-18 21:08:23,282 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 510 transitions. Word has length 157 [2024-11-18 21:08:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:08:23,282 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 510 transitions. [2024-11-18 21:08:23,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 21:08:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 510 transitions. [2024-11-18 21:08:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 21:08:23,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:08:23,284 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:08:23,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:08:23,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:08:23,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:08:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1858026899, now seen corresponding path program 1 times [2024-11-18 21:08:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:08:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390680395] [2024-11-18 21:08:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:08:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:08:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat