./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.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_fillercodestructure_filler-pe-cn_file-75.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 6766b869334f6c13b6400432d1bdf678f66e99650a5efe1fef629afa9b4351bf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:19:42,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:19:42,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:19:42,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:19:42,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:19:42,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:19:42,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:19:42,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:19:42,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:19:42,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:19:42,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:19:42,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:19:42,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:19:42,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:19:42,206 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:19:42,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:19:42,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:19:42,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:19:42,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:19:42,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:19:42,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:19:42,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:19:42,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:19:42,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:19:42,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:19:42,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:19:42,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:19:42,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:19:42,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:19:42,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:19:42,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:19:42,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:19:42,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:19:42,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:19:42,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:19:42,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:19:42,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:19:42,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:19:42,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:19:42,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:19:42,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:19:42,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:19:42,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6766b869334f6c13b6400432d1bdf678f66e99650a5efe1fef629afa9b4351bf [2024-11-22 08:19:42,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:19:42,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:19:42,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:19:42,454 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:19:42,455 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:19:42,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.i [2024-11-22 08:19:43,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:19:43,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:19:43,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.i [2024-11-22 08:19:43,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272471d78/61c03793832745c2aedd09a5eb12b0bf/FLAG5f2a3abc7 [2024-11-22 08:19:43,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272471d78/61c03793832745c2aedd09a5eb12b0bf [2024-11-22 08:19:43,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:19:43,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:19:43,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:19:43,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:19:43,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:19:43,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:19:43" (1/1) ... [2024-11-22 08:19:43,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540a214d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:43, skipping insertion in model container [2024-11-22 08:19:43,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:19:43" (1/1) ... [2024-11-22 08:19:43,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:19:44,109 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.i[919,932] [2024-11-22 08:19:44,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:19:44,180 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:19:44,190 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.i[919,932] [2024-11-22 08:19:44,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:19:44,239 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:19:44,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44 WrapperNode [2024-11-22 08:19:44,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:19:44,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:19:44,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:19:44,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:19:44,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,283 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 341 [2024-11-22 08:19:44,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:19:44,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:19:44,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:19:44,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:19:44,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,316 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 08:19:44,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:19:44,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:19:44,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:19:44,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:19:44,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (1/1) ... [2024-11-22 08:19:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:19:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:19:44,379 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 08:19:44,382 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 08:19:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:19:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:19:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:19:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:19:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:19:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:19:44,508 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:19:44,510 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:19:44,900 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 08:19:44,900 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:19:44,912 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:19:44,913 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:19:44,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:19:44 BoogieIcfgContainer [2024-11-22 08:19:44,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:19:44,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:19:44,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:19:44,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:19:44,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:19:43" (1/3) ... [2024-11-22 08:19:44,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a32a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:19:44, skipping insertion in model container [2024-11-22 08:19:44,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:19:44" (2/3) ... [2024-11-22 08:19:44,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a32a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:19:44, skipping insertion in model container [2024-11-22 08:19:44,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:19:44" (3/3) ... [2024-11-22 08:19:44,920 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-75.i [2024-11-22 08:19:44,933 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:19:44,933 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:19:44,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:19:44,990 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;@58a78d8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:19:44,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:19:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 97 states have internal predecessors, (137), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-22 08:19:45,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:45,018 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:45,018 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:45,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1239975358, now seen corresponding path program 1 times [2024-11-22 08:19:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:45,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330984387] [2024-11-22 08:19:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:45,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-22 08:19:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330984387] [2024-11-22 08:19:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330984387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:19:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270528289] [2024-11-22 08:19:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:19:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:19:45,454 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 08:19:45,455 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 08:19:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:45,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:19:45,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:19:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-22 08:19:45,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:19:45,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270528289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:45,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:19:45,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:19:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854552860] [2024-11-22 08:19:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:45,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:19:45,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:19:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:19:45,740 INFO L87 Difference]: Start difference. First operand has 148 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 97 states have internal predecessors, (137), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-22 08:19:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:45,769 INFO L93 Difference]: Finished difference Result 289 states and 513 transitions. [2024-11-22 08:19:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:19:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 305 [2024-11-22 08:19:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:45,778 INFO L225 Difference]: With dead ends: 289 [2024-11-22 08:19:45,778 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 08:19:45,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 306 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 08:19:45,784 INFO L432 NwaCegarLoop]: 227 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, 227 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 08:19:45,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:19:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 08:19:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-22 08:19:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.3870967741935485) internal successors, (129), 93 states have internal predecessors, (129), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 227 transitions. [2024-11-22 08:19:45,823 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 227 transitions. Word has length 305 [2024-11-22 08:19:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:45,823 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 227 transitions. [2024-11-22 08:19:45,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-22 08:19:45,824 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 227 transitions. [2024-11-22 08:19:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-22 08:19:45,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:45,833 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:45,846 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 08:19:46,034 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 08:19:46,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:46,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1641314274, now seen corresponding path program 1 times [2024-11-22 08:19:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:46,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133588342] [2024-11-22 08:19:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-22 08:19:46,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:46,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133588342] [2024-11-22 08:19:46,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133588342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:46,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:46,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:19:46,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93110588] [2024-11-22 08:19:46,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:46,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:19:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:19:46,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:19:46,607 INFO L87 Difference]: Start difference. First operand 144 states and 227 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-22 08:19:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:46,696 INFO L93 Difference]: Finished difference Result 286 states and 453 transitions. [2024-11-22 08:19:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:19:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 306 [2024-11-22 08:19:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:46,702 INFO L225 Difference]: With dead ends: 286 [2024-11-22 08:19:46,702 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 08:19:46,706 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 08:19:46,708 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:46,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:19:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 08:19:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-22 08:19:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 94 states have internal predecessors, (130), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 228 transitions. [2024-11-22 08:19:46,731 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 228 transitions. Word has length 306 [2024-11-22 08:19:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:46,735 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 228 transitions. [2024-11-22 08:19:46,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-22 08:19:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 228 transitions. [2024-11-22 08:19:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-22 08:19:46,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:46,741 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:46,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:19:46,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:46,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -233476166, now seen corresponding path program 1 times [2024-11-22 08:19:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422397183] [2024-11-22 08:19:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-22 08:19:46,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422397183] [2024-11-22 08:19:46,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422397183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:46,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:46,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:19:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168328790] [2024-11-22 08:19:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:46,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:19:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:19:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:19:46,980 INFO L87 Difference]: Start difference. First operand 145 states and 228 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-22 08:19:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:47,006 INFO L93 Difference]: Finished difference Result 288 states and 455 transitions. [2024-11-22 08:19:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:19:47,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 307 [2024-11-22 08:19:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:47,009 INFO L225 Difference]: With dead ends: 288 [2024-11-22 08:19:47,009 INFO L226 Difference]: Without dead ends: 146 [2024-11-22 08:19:47,010 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 08:19:47,013 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:47,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:19:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-22 08:19:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-22 08:19:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 95 states have (on average 1.3789473684210527) internal successors, (131), 95 states have internal predecessors, (131), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 229 transitions. [2024-11-22 08:19:47,033 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 229 transitions. Word has length 307 [2024-11-22 08:19:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:47,034 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 229 transitions. [2024-11-22 08:19:47,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-22 08:19:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 229 transitions. [2024-11-22 08:19:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-22 08:19:47,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:47,039 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:47,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:19:47,040 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:47,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1972416209, now seen corresponding path program 1 times [2024-11-22 08:19:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201729591] [2024-11-22 08:19:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 45 proven. 99 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-22 08:19:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:47,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201729591] [2024-11-22 08:19:47,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201729591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:19:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645667202] [2024-11-22 08:19:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:19:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:19:47,490 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 08:19:47,491 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 08:19:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:47,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 08:19:47,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:19:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2058 proven. 99 refuted. 0 times theorem prover too weak. 2547 trivial. 0 not checked. [2024-11-22 08:19:48,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:19:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 45 proven. 99 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-22 08:19:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645667202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:19:48,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:19:48,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-22 08:19:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200638928] [2024-11-22 08:19:48,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:19:48,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 08:19:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 08:19:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 08:19:48,416 INFO L87 Difference]: Start difference. First operand 146 states and 229 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2024-11-22 08:19:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:49,249 INFO L93 Difference]: Finished difference Result 387 states and 600 transitions. [2024-11-22 08:19:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:19:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 308 [2024-11-22 08:19:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:49,252 INFO L225 Difference]: With dead ends: 387 [2024-11-22 08:19:49,252 INFO L226 Difference]: Without dead ends: 244 [2024-11-22 08:19:49,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2024-11-22 08:19:49,254 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 475 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:49,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 522 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 08:19:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-22 08:19:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 149. [2024-11-22 08:19:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.288659793814433) internal successors, (125), 97 states have internal predecessors, (125), 49 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 223 transitions. [2024-11-22 08:19:49,275 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 223 transitions. Word has length 308 [2024-11-22 08:19:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:49,276 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 223 transitions. [2024-11-22 08:19:49,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2024-11-22 08:19:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 223 transitions. [2024-11-22 08:19:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-22 08:19:49,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:49,279 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:49,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 08:19:49,480 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,SelfDestructingSolverStorable3 [2024-11-22 08:19:49,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:49,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 403613902, now seen corresponding path program 1 times [2024-11-22 08:19:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899152310] [2024-11-22 08:19:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 45 proven. 99 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-22 08:19:49,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899152310] [2024-11-22 08:19:49,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899152310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:19:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490555101] [2024-11-22 08:19:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:49,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:19:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:19:49,921 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 08:19:49,922 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 08:19:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:50,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 08:19:50,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:19:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1983 proven. 213 refuted. 0 times theorem prover too weak. 2508 trivial. 0 not checked. [2024-11-22 08:19:50,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:19:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 45 proven. 99 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-22 08:19:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490555101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:19:50,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:19:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-22 08:19:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958288847] [2024-11-22 08:19:50,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:19:50,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 08:19:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 08:19:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:19:50,770 INFO L87 Difference]: Start difference. First operand 149 states and 223 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2024-11-22 08:19:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:51,584 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2024-11-22 08:19:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:19:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 309 [2024-11-22 08:19:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:51,587 INFO L225 Difference]: With dead ends: 390 [2024-11-22 08:19:51,587 INFO L226 Difference]: Without dead ends: 244 [2024-11-22 08:19:51,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2024-11-22 08:19:51,592 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 228 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:51,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 925 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 08:19:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-22 08:19:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 149. [2024-11-22 08:19:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 97 states have internal predecessors, (124), 49 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 08:19:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 222 transitions. [2024-11-22 08:19:51,613 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 222 transitions. Word has length 309 [2024-11-22 08:19:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:51,614 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 222 transitions. [2024-11-22 08:19:51,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2024-11-22 08:19:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 222 transitions. [2024-11-22 08:19:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 08:19:51,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:51,617 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:51,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 08:19:51,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:19:51,818 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:51,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 903947301, now seen corresponding path program 1 times [2024-11-22 08:19:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809106665] [2024-11-22 08:19:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 08:19:51,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048145305] [2024-11-22 08:19:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:19:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:19:51,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 08:19:51,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 08:19:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:52,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 08:19:52,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:19:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2394 proven. 75 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2024-11-22 08:19:53,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:19:57,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809106665] [2024-11-22 08:19:57,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 08:19:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048145305] [2024-11-22 08:19:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048145305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:19:57,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:19:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-22 08:19:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981782808] [2024-11-22 08:19:57,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 08:19:57,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 08:19:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 08:19:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=132, Unknown=1, NotChecked=0, Total=182 [2024-11-22 08:19:57,804 INFO L87 Difference]: Start difference. First operand 149 states and 222 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-22 08:20:01,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:03,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 08:20:07,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:12,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:16,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:21,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:22,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 08:20:27,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:31,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:35,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:40,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:46,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:47,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 08:20:51,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:20:52,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 08:20:57,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:21:01,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:21:11,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:21:16,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:21:20,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-22 08:21:25,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]