./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-64.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_fillercodesize_ps-cn-50_file-64.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 523ab1782dfa3dcdc0aab84be9cad9a55ebed22394710b8604ae8836b477b0ac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:03:37,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:03:38,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:03:38,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:03:38,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:03:38,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:03:38,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:03:38,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:03:38,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:03:38,120 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:03:38,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:03:38,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:03:38,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:03:38,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:03:38,124 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:03:38,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:03:38,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:03:38,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:03:38,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:03:38,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:03:38,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:03:38,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:03:38,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:03:38,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:03:38,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:03:38,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:03:38,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:03:38,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:03:38,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:03:38,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:03:38,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:03:38,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:03:38,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:03:38,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:03:38,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:03:38,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:03:38,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:03:38,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:03:38,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:03:38,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:03:38,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:03:38,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:03:38,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 523ab1782dfa3dcdc0aab84be9cad9a55ebed22394710b8604ae8836b477b0ac [2024-11-18 20:03:38,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:03:38,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:03:38,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:03:38,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:03:38,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:03:38,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-64.i [2024-11-18 20:03:39,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:03:40,077 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:03:40,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-64.i [2024-11-18 20:03:40,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36777e64c/fd2b1e1c09b84750859b47af2d617dc5/FLAG2bcfa59b8 [2024-11-18 20:03:40,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36777e64c/fd2b1e1c09b84750859b47af2d617dc5 [2024-11-18 20:03:40,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:03:40,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:03:40,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:03:40,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:03:40,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:03:40,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a6921d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40, skipping insertion in model container [2024-11-18 20:03:40,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:03:40,314 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-50_file-64.i[915,928] [2024-11-18 20:03:40,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:03:40,400 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:03:40,410 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-50_file-64.i[915,928] [2024-11-18 20:03:40,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:03:40,481 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:03:40,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40 WrapperNode [2024-11-18 20:03:40,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:03:40,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:03:40,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:03:40,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:03:40,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,540 INFO L138 Inliner]: procedures = 26, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 274 [2024-11-18 20:03:40,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:03:40,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:03:40,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:03:40,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:03:40,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,588 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 20:03:40,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:03:40,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:03:40,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:03:40,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:03:40,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (1/1) ... [2024-11-18 20:03:40,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:03:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:03:40,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 20:03:40,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 20:03:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:03:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:03:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:03:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:03:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:03:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:03:40,824 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:03:40,828 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:03:41,278 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 20:03:41,278 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:03:41,294 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:03:41,295 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:03:41,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:41 BoogieIcfgContainer [2024-11-18 20:03:41,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:03:41,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:03:41,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:03:41,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:03:41,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:03:40" (1/3) ... [2024-11-18 20:03:41,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533f6f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:41, skipping insertion in model container [2024-11-18 20:03:41,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:40" (2/3) ... [2024-11-18 20:03:41,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533f6f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:41, skipping insertion in model container [2024-11-18 20:03:41,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:41" (3/3) ... [2024-11-18 20:03:41,307 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-64.i [2024-11-18 20:03:41,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:03:41,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:03:41,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:03:41,438 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;@7d0645d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:03:41,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:03:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 69 states have internal predecessors, (93), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:03:41,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:41,462 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:41,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:41,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -19507857, now seen corresponding path program 1 times [2024-11-18 20:03:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:41,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483581497] [2024-11-18 20:03:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2024-11-18 20:03:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:41,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483581497] [2024-11-18 20:03:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483581497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:03:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140871570] [2024-11-18 20:03:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:41,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:03:41,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:03:41,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:03:41,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:03:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:42,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:03:42,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:03:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2024-11-18 20:03:42,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:03:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140871570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:03:42,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:03:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121946589] [2024-11-18 20:03:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:42,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:03:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:03:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:03:42,328 INFO L87 Difference]: Start difference. First operand has 117 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 69 states have internal predecessors, (93), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-18 20:03:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:42,371 INFO L93 Difference]: Finished difference Result 227 states and 410 transitions. [2024-11-18 20:03:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:03:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) Word has length 282 [2024-11-18 20:03:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:42,383 INFO L225 Difference]: With dead ends: 227 [2024-11-18 20:03:42,383 INFO L226 Difference]: Without dead ends: 113 [2024-11-18 20:03:42,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:03:42,391 INFO L432 NwaCegarLoop]: 178 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, 178 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:42,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:03:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-18 20:03:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-18 20:03:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 178 transitions. [2024-11-18 20:03:42,445 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 178 transitions. Word has length 282 [2024-11-18 20:03:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:42,446 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 178 transitions. [2024-11-18 20:03:42,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-18 20:03:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 178 transitions. [2024-11-18 20:03:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:03:42,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:42,452 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:42,472 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 20:03:42,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:03:42,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:42,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 704734707, now seen corresponding path program 1 times [2024-11-18 20:03:42,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:42,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119146524] [2024-11-18 20:03:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:03:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119146524] [2024-11-18 20:03:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119146524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:43,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:03:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:03:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781938240] [2024-11-18 20:03:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:43,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:03:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:03:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:03:43,382 INFO L87 Difference]: Start difference. First operand 113 states and 178 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:43,734 INFO L93 Difference]: Finished difference Result 428 states and 675 transitions. [2024-11-18 20:03:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:03:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:03:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:43,744 INFO L225 Difference]: With dead ends: 428 [2024-11-18 20:03:43,747 INFO L226 Difference]: Without dead ends: 318 [2024-11-18 20:03:43,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:03:43,749 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 329 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:43,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 841 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:03:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-18 20:03:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 117. [2024-11-18 20:03:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 69 states have internal predecessors, (92), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 184 transitions. [2024-11-18 20:03:43,793 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 184 transitions. Word has length 282 [2024-11-18 20:03:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:43,797 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 184 transitions. [2024-11-18 20:03:43,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 184 transitions. [2024-11-18 20:03:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:03:43,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:43,803 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:43,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:03:43,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:43,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash -104611919, now seen corresponding path program 1 times [2024-11-18 20:03:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218983788] [2024-11-18 20:03:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:03:44,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:44,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218983788] [2024-11-18 20:03:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218983788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:44,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:03:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:03:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367642060] [2024-11-18 20:03:44,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:44,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:03:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:03:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:03:44,217 INFO L87 Difference]: Start difference. First operand 117 states and 184 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:44,497 INFO L93 Difference]: Finished difference Result 432 states and 680 transitions. [2024-11-18 20:03:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:03:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:03:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:44,509 INFO L225 Difference]: With dead ends: 432 [2024-11-18 20:03:44,509 INFO L226 Difference]: Without dead ends: 318 [2024-11-18 20:03:44,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:03:44,512 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 319 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:44,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 873 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:03:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-18 20:03:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 117. [2024-11-18 20:03:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 69 states have internal predecessors, (92), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 184 transitions. [2024-11-18 20:03:44,544 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 184 transitions. Word has length 282 [2024-11-18 20:03:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:44,547 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 184 transitions. [2024-11-18 20:03:44,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 184 transitions. [2024-11-18 20:03:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:03:44,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:44,549 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:44,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:03:44,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:44,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 412541105, now seen corresponding path program 1 times [2024-11-18 20:03:44,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:44,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290268638] [2024-11-18 20:03:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:03:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290268638] [2024-11-18 20:03:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290268638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:03:49,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:03:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937665386] [2024-11-18 20:03:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:49,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:03:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:03:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:03:49,723 INFO L87 Difference]: Start difference. First operand 117 states and 184 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:50,095 INFO L93 Difference]: Finished difference Result 341 states and 533 transitions. [2024-11-18 20:03:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:03:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:03:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:50,099 INFO L225 Difference]: With dead ends: 341 [2024-11-18 20:03:50,099 INFO L226 Difference]: Without dead ends: 227 [2024-11-18 20:03:50,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:03:50,101 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 170 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:50,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 837 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:03:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-18 20:03:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 117. [2024-11-18 20:03:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 69 states have internal predecessors, (92), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 184 transitions. [2024-11-18 20:03:50,128 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 184 transitions. Word has length 282 [2024-11-18 20:03:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:50,129 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 184 transitions. [2024-11-18 20:03:50,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 184 transitions. [2024-11-18 20:03:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:03:50,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:50,132 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:50,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:03:50,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:50,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1221887731, now seen corresponding path program 1 times [2024-11-18 20:03:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:50,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208081450] [2024-11-18 20:03:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:50,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:03:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:50,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208081450] [2024-11-18 20:03:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208081450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:03:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:03:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030178757] [2024-11-18 20:03:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:50,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:03:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:03:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:03:50,434 INFO L87 Difference]: Start difference. First operand 117 states and 184 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:50,725 INFO L93 Difference]: Finished difference Result 346 states and 540 transitions. [2024-11-18 20:03:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:03:50,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:03:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:50,728 INFO L225 Difference]: With dead ends: 346 [2024-11-18 20:03:50,731 INFO L226 Difference]: Without dead ends: 232 [2024-11-18 20:03:50,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:03:50,732 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 178 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:50,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1050 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:03:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-18 20:03:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 113. [2024-11-18 20:03:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:03:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 177 transitions. [2024-11-18 20:03:50,752 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 177 transitions. Word has length 282 [2024-11-18 20:03:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:50,753 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 177 transitions. [2024-11-18 20:03:50,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 177 transitions. [2024-11-18 20:03:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 20:03:50,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:50,755 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:50,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:03:50,756 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:50,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1903231826, now seen corresponding path program 1 times [2024-11-18 20:03:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191747557] [2024-11-18 20:03:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:03:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:03:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:03:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191747557] [2024-11-18 20:03:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191747557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:03:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:03:55,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 20:03:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247642321] [2024-11-18 20:03:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:03:55,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:03:55,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:03:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:03:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:03:55,133 INFO L87 Difference]: Start difference. First operand 113 states and 177 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:03:55,953 INFO L93 Difference]: Finished difference Result 392 states and 584 transitions. [2024-11-18 20:03:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:03:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 284 [2024-11-18 20:03:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:03:55,958 INFO L225 Difference]: With dead ends: 392 [2024-11-18 20:03:55,958 INFO L226 Difference]: Without dead ends: 282 [2024-11-18 20:03:55,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:03:55,961 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 266 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:03:55,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 717 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:03:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-18 20:03:55,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 187. [2024-11-18 20:03:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.3388429752066116) internal successors, (162), 123 states have internal predecessors, (162), 62 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 20:03:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 286 transitions. [2024-11-18 20:03:55,997 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 286 transitions. Word has length 284 [2024-11-18 20:03:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:03:56,000 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 286 transitions. [2024-11-18 20:03:56,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:03:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 286 transitions. [2024-11-18 20:03:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 20:03:56,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:03:56,002 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:03:56,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:03:56,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:03:56,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:03:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1998708460, now seen corresponding path program 1 times [2024-11-18 20:03:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:03:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547120684] [2024-11-18 20:03:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:03:56,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:03:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat