./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_fillercodesize_ps-cn-25_file-59.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 b8b9ffa0f086760a52bbb5b7ce872ecb50536a94abf6bed664eac71cc82e5722 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:35:51,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:35:51,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:35:51,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:35:51,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:35:51,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:35:51,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:35:51,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:35:51,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:35:51,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:35:51,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:35:51,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:35:51,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:35:51,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:35:51,467 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:35:51,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:35:51,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:35:51,468 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:35:51,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:35:51,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:35:51,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:35:51,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:35:51,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:35:51,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:35:51,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:35:51,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:35:51,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:35:51,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:35:51,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:35:51,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:35:51,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b9ffa0f086760a52bbb5b7ce872ecb50536a94abf6bed664eac71cc82e5722 [2024-11-22 07:35:51,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:35:51,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:35:51,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:35:51,959 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:35:51,963 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:35:51,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-59.i [2024-11-22 07:35:53,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:35:53,553 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:35:53,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-59.i [2024-11-22 07:35:53,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f973315df/8198f48bc0e64154b960f902ebc4a3cd/FLAG5d4a13516 [2024-11-22 07:35:53,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f973315df/8198f48bc0e64154b960f902ebc4a3cd [2024-11-22 07:35:53,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:35:53,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:35:53,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:35:53,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:35:53,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:35:53,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:53,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d63f9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53, skipping insertion in model container [2024-11-22 07:35:53,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:53,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:35:53,773 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_fillercodesize_ps-cn-25_file-59.i[915,928] [2024-11-22 07:35:53,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:35:53,871 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:35:53,882 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_fillercodesize_ps-cn-25_file-59.i[915,928] [2024-11-22 07:35:53,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:35:53,940 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:35:53,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53 WrapperNode [2024-11-22 07:35:53,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:35:53,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:35:53,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:35:53,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:35:53,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:53,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,010 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202 [2024-11-22 07:35:54,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:35:54,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:35:54,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:35:54,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:35:54,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,050 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]. [2024-11-22 07:35:54,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:35:54,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:35:54,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:35:54,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:35:54,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (1/1) ... [2024-11-22 07:35:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:35:54,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:35:54,115 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) [2024-11-22 07:35:54,123 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 [2024-11-22 07:35:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:35:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:35:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:35:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:35:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:35:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:35:54,272 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:35:54,279 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:35:54,657 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 07:35:54,657 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:35:54,667 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:35:54,668 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:35:54,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:35:54 BoogieIcfgContainer [2024-11-22 07:35:54,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:35:54,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:35:54,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:35:54,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:35:54,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:35:53" (1/3) ... [2024-11-22 07:35:54,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f746e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:35:54, skipping insertion in model container [2024-11-22 07:35:54,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:53" (2/3) ... [2024-11-22 07:35:54,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f746e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:35:54, skipping insertion in model container [2024-11-22 07:35:54,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:35:54" (3/3) ... [2024-11-22 07:35:54,674 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-59.i [2024-11-22 07:35:54,688 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:35:54,689 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:35:54,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:35:54,755 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;@7b30eb49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:35:54,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:35:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 07:35:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 07:35:54,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:54,776 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:54,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1810492343, now seen corresponding path program 1 times [2024-11-22 07:35:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795576024] [2024-11-22 07:35:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:54,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-22 07:35:55,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795576024] [2024-11-22 07:35:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795576024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:35:55,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685230590] [2024-11-22 07:35:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:55,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:35:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:35:55,079 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) [2024-11-22 07:35:55,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:35:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:55,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:35:55,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:35:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-22 07:35:55,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:35:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685230590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:35:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:35:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036781294] [2024-11-22 07:35:55,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:55,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:35:55,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:35:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:35:55,303 INFO L87 Difference]: Start difference. First operand has 86 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 07:35:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:55,334 INFO L93 Difference]: Finished difference Result 165 states and 289 transitions. [2024-11-22 07:35:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:35:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2024-11-22 07:35:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:55,343 INFO L225 Difference]: With dead ends: 165 [2024-11-22 07:35:55,343 INFO L226 Difference]: Without dead ends: 82 [2024-11-22 07:35:55,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:35:55,350 INFO L432 NwaCegarLoop]: 125 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, 125 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 [2024-11-22 07:35:55,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:35:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-22 07:35:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-22 07:35:55,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 07:35:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 125 transitions. [2024-11-22 07:35:55,398 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 125 transitions. Word has length 175 [2024-11-22 07:35:55,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:55,398 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 125 transitions. [2024-11-22 07:35:55,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 07:35:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 125 transitions. [2024-11-22 07:35:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 07:35:55,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:55,404 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:55,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 07:35:55,608 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 [2024-11-22 07:35:55,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:55,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1780209599, now seen corresponding path program 1 times [2024-11-22 07:35:55,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:55,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425371939] [2024-11-22 07:35:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425371939] [2024-11-22 07:35:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425371939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:56,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:35:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274017743] [2024-11-22 07:35:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:56,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:35:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:35:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:35:56,086 INFO L87 Difference]: Start difference. First operand 82 states and 125 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:56,216 INFO L93 Difference]: Finished difference Result 225 states and 343 transitions. [2024-11-22 07:35:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:35:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-22 07:35:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:56,219 INFO L225 Difference]: With dead ends: 225 [2024-11-22 07:35:56,219 INFO L226 Difference]: Without dead ends: 146 [2024-11-22 07:35:56,220 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 [2024-11-22 07:35:56,221 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 96 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:56,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 309 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:35:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-22 07:35:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2024-11-22 07:35:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 94 states have internal predecessors, (124), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-22 07:35:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 218 transitions. [2024-11-22 07:35:56,237 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 218 transitions. Word has length 175 [2024-11-22 07:35:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:56,242 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 218 transitions. [2024-11-22 07:35:56,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 218 transitions. [2024-11-22 07:35:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 07:35:56,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:56,244 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:56,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:35:56,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:56,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash 769092349, now seen corresponding path program 1 times [2024-11-22 07:35:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707197732] [2024-11-22 07:35:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:56,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:56,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707197732] [2024-11-22 07:35:56,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707197732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:56,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:56,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:35:56,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214107417] [2024-11-22 07:35:56,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:56,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:35:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:35:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:35:56,457 INFO L87 Difference]: Start difference. First operand 143 states and 218 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:56,531 INFO L93 Difference]: Finished difference Result 422 states and 647 transitions. [2024-11-22 07:35:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:35:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-22 07:35:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:56,538 INFO L225 Difference]: With dead ends: 422 [2024-11-22 07:35:56,539 INFO L226 Difference]: Without dead ends: 282 [2024-11-22 07:35:56,541 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 [2024-11-22 07:35:56,543 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 71 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:56,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 273 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:35:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-22 07:35:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2024-11-22 07:35:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 181 states have (on average 1.3314917127071824) internal successors, (241), 183 states have internal predecessors, (241), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 07:35:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 429 transitions. [2024-11-22 07:35:56,588 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 429 transitions. Word has length 175 [2024-11-22 07:35:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:56,589 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 429 transitions. [2024-11-22 07:35:56,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 429 transitions. [2024-11-22 07:35:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 07:35:56,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:56,591 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:56,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:35:56,591 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:56,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1590851278, now seen corresponding path program 1 times [2024-11-22 07:35:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519097941] [2024-11-22 07:35:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:56,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519097941] [2024-11-22 07:35:56,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519097941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:56,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:56,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:35:56,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23722604] [2024-11-22 07:35:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:56,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:35:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:35:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:35:56,732 INFO L87 Difference]: Start difference. First operand 280 states and 429 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:56,773 INFO L93 Difference]: Finished difference Result 557 states and 855 transitions. [2024-11-22 07:35:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:35:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-22 07:35:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:56,777 INFO L225 Difference]: With dead ends: 557 [2024-11-22 07:35:56,777 INFO L226 Difference]: Without dead ends: 280 [2024-11-22 07:35:56,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:35:56,780 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:56,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:35:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-22 07:35:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2024-11-22 07:35:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 180 states have (on average 1.3111111111111111) internal successors, (236), 182 states have internal predecessors, (236), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 07:35:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 424 transitions. [2024-11-22 07:35:56,818 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 424 transitions. Word has length 176 [2024-11-22 07:35:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:56,819 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 424 transitions. [2024-11-22 07:35:56,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 424 transitions. [2024-11-22 07:35:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 07:35:56,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:56,822 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:56,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:35:56,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:56,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1692998768, now seen corresponding path program 1 times [2024-11-22 07:35:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054144698] [2024-11-22 07:35:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:57,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:57,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054144698] [2024-11-22 07:35:57,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054144698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:57,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:57,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:35:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468983165] [2024-11-22 07:35:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:57,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:35:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:35:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:35:57,053 INFO L87 Difference]: Start difference. First operand 279 states and 424 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:57,199 INFO L93 Difference]: Finished difference Result 687 states and 1040 transitions. [2024-11-22 07:35:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:35:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-22 07:35:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:57,205 INFO L225 Difference]: With dead ends: 687 [2024-11-22 07:35:57,206 INFO L226 Difference]: Without dead ends: 411 [2024-11-22 07:35:57,207 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 [2024-11-22 07:35:57,208 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 85 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:57,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 356 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:35:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-22 07:35:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 358. [2024-11-22 07:35:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 230 states have (on average 1.2695652173913043) internal successors, (292), 232 states have internal predecessors, (292), 121 states have call successors, (121), 6 states have call predecessors, (121), 6 states have return successors, (121), 119 states have call predecessors, (121), 121 states have call successors, (121) [2024-11-22 07:35:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 534 transitions. [2024-11-22 07:35:57,264 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 534 transitions. Word has length 176 [2024-11-22 07:35:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:57,265 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 534 transitions. [2024-11-22 07:35:57,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 534 transitions. [2024-11-22 07:35:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 07:35:57,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:57,268 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:57,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:35:57,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:57,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1751997195, now seen corresponding path program 1 times [2024-11-22 07:35:57,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582234365] [2024-11-22 07:35:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:57,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:57,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582234365] [2024-11-22 07:35:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582234365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:35:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006322785] [2024-11-22 07:35:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:57,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:35:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:35:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:35:57,466 INFO L87 Difference]: Start difference. First operand 358 states and 534 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:57,541 INFO L93 Difference]: Finished difference Result 909 states and 1348 transitions. [2024-11-22 07:35:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:35:57,545 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-22 07:35:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:57,552 INFO L225 Difference]: With dead ends: 909 [2024-11-22 07:35:57,553 INFO L226 Difference]: Without dead ends: 610 [2024-11-22 07:35:57,554 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 [2024-11-22 07:35:57,558 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 87 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:57,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 283 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:35:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-22 07:35:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 604. [2024-11-22 07:35:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 408 states have (on average 1.2818627450980393) internal successors, (523), 414 states have internal predecessors, (523), 185 states have call successors, (185), 10 states have call predecessors, (185), 10 states have return successors, (185), 179 states have call predecessors, (185), 185 states have call successors, (185) [2024-11-22 07:35:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 893 transitions. [2024-11-22 07:35:57,658 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 893 transitions. Word has length 177 [2024-11-22 07:35:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:57,659 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 893 transitions. [2024-11-22 07:35:57,659 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 07:35:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 893 transitions. [2024-11-22 07:35:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 07:35:57,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:57,660 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:57,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:35:57,661 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:57,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 854026359, now seen corresponding path program 1 times [2024-11-22 07:35:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:57,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88417479] [2024-11-22 07:35:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 07:35:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88417479] [2024-11-22 07:35:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88417479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:35:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:35:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:35:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552215627] [2024-11-22 07:35:58,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:35:58,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:35:58,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:35:58,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:35:58,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:35:58,188 INFO L87 Difference]: Start difference. First operand 604 states and 893 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 07:35:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:35:58,536 INFO L93 Difference]: Finished difference Result 1666 states and 2488 transitions. [2024-11-22 07:35:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:35:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-11-22 07:35:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:35:58,544 INFO L225 Difference]: With dead ends: 1666 [2024-11-22 07:35:58,544 INFO L226 Difference]: Without dead ends: 1168 [2024-11-22 07:35:58,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:35:58,547 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 215 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:35:58,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 614 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:35:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-22 07:35:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1100. [2024-11-22 07:35:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 738 states have (on average 1.2777777777777777) internal successors, (943), 750 states have internal predecessors, (943), 343 states have call successors, (343), 18 states have call predecessors, (343), 18 states have return successors, (343), 331 states have call predecessors, (343), 343 states have call successors, (343) [2024-11-22 07:35:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1629 transitions. [2024-11-22 07:35:58,649 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1629 transitions. Word has length 177 [2024-11-22 07:35:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:35:58,650 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1629 transitions. [2024-11-22 07:35:58,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 07:35:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1629 transitions. [2024-11-22 07:35:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-22 07:35:58,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:35:58,654 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:35:58,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:35:58,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:35:58,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:35:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2098796613, now seen corresponding path program 1 times [2024-11-22 07:35:58,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:35:58,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77081836] [2024-11-22 07:35:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:35:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 07:35:59,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:35:59,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77081836] [2024-11-22 07:35:59,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77081836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:35:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441174097] [2024-11-22 07:35:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:35:59,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:35:59,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:35:59,051 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) [2024-11-22 07:35:59,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 07:35:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:35:59,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 07:35:59,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:35:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 722 proven. 42 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-22 07:35:59,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:36:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 07:36:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441174097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:36:00,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:36:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 18 [2024-11-22 07:36:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280429288] [2024-11-22 07:36:00,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:36:00,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 07:36:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:36:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 07:36:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-22 07:36:00,190 INFO L87 Difference]: Start difference. First operand 1100 states and 1629 transitions. Second operand has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (68), 3 states have call predecessors, (68), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) [2024-11-22 07:36:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:36:01,449 INFO L93 Difference]: Finished difference Result 3558 states and 5142 transitions. [2024-11-22 07:36:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 07:36:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (68), 3 states have call predecessors, (68), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) Word has length 178 [2024-11-22 07:36:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:36:01,462 INFO L225 Difference]: With dead ends: 3558 [2024-11-22 07:36:01,462 INFO L226 Difference]: Without dead ends: 2564 [2024-11-22 07:36:01,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 07:36:01,466 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 715 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:36:01,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 936 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 07:36:01,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2024-11-22 07:36:01,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1240. [2024-11-22 07:36:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 861 states have (on average 1.2473867595818815) internal successors, (1074), 873 states have internal predecessors, (1074), 343 states have call successors, (343), 35 states have call predecessors, (343), 35 states have return successors, (343), 331 states have call predecessors, (343), 343 states have call successors, (343) [2024-11-22 07:36:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1760 transitions. [2024-11-22 07:36:01,619 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1760 transitions. Word has length 178 [2024-11-22 07:36:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:36:01,620 INFO L471 AbstractCegarLoop]: Abstraction has 1240 states and 1760 transitions. [2024-11-22 07:36:01,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 5 states have call successors, (68), 3 states have call predecessors, (68), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) [2024-11-22 07:36:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1760 transitions. [2024-11-22 07:36:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-22 07:36:01,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:36:01,624 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:36:01,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 07:36:01,825 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,SelfDestructingSolverStorable7 [2024-11-22 07:36:01,826 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:36:01,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:36:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 323789251, now seen corresponding path program 1 times [2024-11-22 07:36:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:36:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002000543] [2024-11-22 07:36:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:36:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:36:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:36:01,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32264289] [2024-11-22 07:36:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:36:01,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:36:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:36:01,931 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) [2024-11-22 07:36:01,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 07:36:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:36:02,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-22 07:36:02,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:36:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 338 proven. 300 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-22 07:36:04,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:36:22,789 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 07:36:40,908 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 07:36:46,022 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 07:37:12,274 WARN L286 SmtUtils]: Spent 12.82s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)