./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-82.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-250_file-82.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 90db53ce72b1ee9ca381af5f4f7789bdc057550f196d455f7f131773caa16c27 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:36:32,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:36:33,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:36:33,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:36:33,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:36:33,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:36:33,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:36:33,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:36:33,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:36:33,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:36:33,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:36:33,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:36:33,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:36:33,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:36:33,049 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:36:33,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:36:33,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:36:33,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:36:33,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:36:33,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:36:33,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:36:33,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:36:33,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:36:33,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:36:33,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:36:33,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:36:33,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:36:33,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:36:33,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:36:33,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:36:33,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:36:33,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:36:33,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:33,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:36:33,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:36:33,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:36:33,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:36:33,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:36:33,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:36:33,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:36:33,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:36:33,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:36:33,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90db53ce72b1ee9ca381af5f4f7789bdc057550f196d455f7f131773caa16c27 [2024-11-18 19:36:33,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:36:33,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:36:33,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:36:33,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:36:33,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:36:33,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-82.i [2024-11-18 19:36:34,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:36:35,207 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:36:35,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-82.i [2024-11-18 19:36:35,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ece0abaa4/a17efb45ba6c4447a8b91fb6828d45fb/FLAGd0d11e009 [2024-11-18 19:36:35,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ece0abaa4/a17efb45ba6c4447a8b91fb6828d45fb [2024-11-18 19:36:35,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:36:35,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:36:35,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:35,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:36:35,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:36:35,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:35" (1/1) ... [2024-11-18 19:36:35,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5850cf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:35, skipping insertion in model container [2024-11-18 19:36:35,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:35" (1/1) ... [2024-11-18 19:36:35,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:36:35,771 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-250_file-82.i[916,929] [2024-11-18 19:36:35,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:35,966 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:36:35,978 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-250_file-82.i[916,929] [2024-11-18 19:36:36,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:36,076 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:36:36,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36 WrapperNode [2024-11-18 19:36:36,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:36,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:36,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:36:36,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:36:36,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,196 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 576 [2024-11-18 19:36:36,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:36,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:36:36,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:36:36,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:36:36,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,248 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 19:36:36,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:36:36,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:36:36,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:36:36,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:36:36,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (1/1) ... [2024-11-18 19:36:36,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:36,353 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 19:36:36,357 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 19:36:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:36:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:36:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:36:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:36:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:36:36,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:36:36,549 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:36:36,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:36:37,504 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-18 19:36:37,505 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:36:37,525 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:36:37,525 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:36:37,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:37 BoogieIcfgContainer [2024-11-18 19:36:37,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:36:37,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:36:37,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:36:37,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:36:37,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:36:35" (1/3) ... [2024-11-18 19:36:37,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e71b6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:37, skipping insertion in model container [2024-11-18 19:36:37,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:36" (2/3) ... [2024-11-18 19:36:37,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e71b6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:37, skipping insertion in model container [2024-11-18 19:36:37,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:37" (3/3) ... [2024-11-18 19:36:37,537 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-82.i [2024-11-18 19:36:37,556 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:36:37,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:36:37,637 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:36:37,648 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;@49fd134c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:36:37,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:36:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 153 states have (on average 1.5163398692810457) internal successors, (232), 154 states have internal predecessors, (232), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 19:36:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-18 19:36:37,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:37,693 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:37,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:37,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -918895541, now seen corresponding path program 1 times [2024-11-18 19:36:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278250151] [2024-11-18 19:36:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2024-11-18 19:36:38,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:38,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278250151] [2024-11-18 19:36:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278250151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429579869] [2024-11-18 19:36:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:38,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:38,363 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 19:36:38,410 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 19:36:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:38,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:36:38,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2024-11-18 19:36:38,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:36:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429579869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:38,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:36:38,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:36:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149499839] [2024-11-18 19:36:38,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:38,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:36:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:36:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:36:38,939 INFO L87 Difference]: Start difference. First operand has 236 states, 153 states have (on average 1.5163398692810457) internal successors, (232), 154 states have internal predecessors, (232), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:36:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:39,018 INFO L93 Difference]: Finished difference Result 464 states and 856 transitions. [2024-11-18 19:36:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:36:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 502 [2024-11-18 19:36:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:39,029 INFO L225 Difference]: With dead ends: 464 [2024-11-18 19:36:39,030 INFO L226 Difference]: Without dead ends: 231 [2024-11-18 19:36:39,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 503 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 19:36:39,039 INFO L432 NwaCegarLoop]: 382 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, 382 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 19:36:39,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-18 19:36:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-18 19:36:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 149 states have internal predecessors, (222), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 19:36:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 382 transitions. [2024-11-18 19:36:39,125 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 382 transitions. Word has length 502 [2024-11-18 19:36:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:39,126 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 382 transitions. [2024-11-18 19:36:39,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:36:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 382 transitions. [2024-11-18 19:36:39,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-18 19:36:39,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:39,143 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:39,165 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 19:36:39,344 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 19:36:39,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:39,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1365206633, now seen corresponding path program 1 times [2024-11-18 19:36:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101161416] [2024-11-18 19:36:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:36:39,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:39,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101161416] [2024-11-18 19:36:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101161416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:39,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:39,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:36:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060515744] [2024-11-18 19:36:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:39,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:36:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:36:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:39,837 INFO L87 Difference]: Start difference. First operand 231 states and 382 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:39,947 INFO L93 Difference]: Finished difference Result 594 states and 985 transitions. [2024-11-18 19:36:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:36:39,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 502 [2024-11-18 19:36:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:39,957 INFO L225 Difference]: With dead ends: 594 [2024-11-18 19:36:39,959 INFO L226 Difference]: Without dead ends: 366 [2024-11-18 19:36:39,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:39,962 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 222 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:39,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 727 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:36:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-18 19:36:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 363. [2024-11-18 19:36:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 250 states have internal predecessors, (376), 111 states have call successors, (111), 2 states have call predecessors, (111), 2 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-18 19:36:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 598 transitions. [2024-11-18 19:36:40,037 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 598 transitions. Word has length 502 [2024-11-18 19:36:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:40,039 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 598 transitions. [2024-11-18 19:36:40,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 598 transitions. [2024-11-18 19:36:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-18 19:36:40,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:40,047 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:40,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:36:40,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:40,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash 782586631, now seen corresponding path program 1 times [2024-11-18 19:36:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147400859] [2024-11-18 19:36:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:36:41,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147400859] [2024-11-18 19:36:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147400859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:36:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557711974] [2024-11-18 19:36:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:41,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:36:41,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:36:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:36:41,268 INFO L87 Difference]: Start difference. First operand 363 states and 598 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:41,565 INFO L93 Difference]: Finished difference Result 981 states and 1618 transitions. [2024-11-18 19:36:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:36:41,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 503 [2024-11-18 19:36:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:41,580 INFO L225 Difference]: With dead ends: 981 [2024-11-18 19:36:41,581 INFO L226 Difference]: Without dead ends: 621 [2024-11-18 19:36:41,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:36:41,583 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 209 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:41,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1017 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 19:36:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-18 19:36:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 611. [2024-11-18 19:36:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 437 states have (on average 1.528604118993135) internal successors, (668), 440 states have internal predecessors, (668), 169 states have call successors, (169), 4 states have call predecessors, (169), 4 states have return successors, (169), 166 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-18 19:36:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1006 transitions. [2024-11-18 19:36:41,655 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1006 transitions. Word has length 503 [2024-11-18 19:36:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:41,660 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 1006 transitions. [2024-11-18 19:36:41,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1006 transitions. [2024-11-18 19:36:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-18 19:36:41,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:41,666 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:41,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:36:41,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:41,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1209814740, now seen corresponding path program 1 times [2024-11-18 19:36:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:41,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735246914] [2024-11-18 19:36:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:36:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735246914] [2024-11-18 19:36:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735246914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:44,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:44,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 19:36:44,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002098921] [2024-11-18 19:36:44,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:44,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:36:44,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:36:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:36:44,725 INFO L87 Difference]: Start difference. First operand 611 states and 1006 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:46,109 INFO L93 Difference]: Finished difference Result 1531 states and 2500 transitions. [2024-11-18 19:36:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:36:46,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 504 [2024-11-18 19:36:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:46,119 INFO L225 Difference]: With dead ends: 1531 [2024-11-18 19:36:46,119 INFO L226 Difference]: Without dead ends: 923 [2024-11-18 19:36:46,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:36:46,124 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1013 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:46,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1571 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 19:36:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-18 19:36:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 635. [2024-11-18 19:36:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 461 states have (on average 1.5336225596529285) internal successors, (707), 464 states have internal predecessors, (707), 169 states have call successors, (169), 4 states have call predecessors, (169), 4 states have return successors, (169), 166 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-18 19:36:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1045 transitions. [2024-11-18 19:36:46,209 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1045 transitions. Word has length 504 [2024-11-18 19:36:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:46,210 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 1045 transitions. [2024-11-18 19:36:46,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1045 transitions. [2024-11-18 19:36:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-18 19:36:46,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:46,216 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:46,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:36:46,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:46,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -595623594, now seen corresponding path program 1 times [2024-11-18 19:36:46,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:46,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109595147] [2024-11-18 19:36:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:46,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 177 proven. 60 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2024-11-18 19:36:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109595147] [2024-11-18 19:36:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109595147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366005534] [2024-11-18 19:36:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:47,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:36:47,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:36:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:47,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:36:47,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 849 proven. 6 refuted. 0 times theorem prover too weak. 11785 trivial. 0 not checked. [2024-11-18 19:36:47,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:36:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 231 proven. 6 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2024-11-18 19:36:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366005534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:36:48,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:36:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 19:36:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156114550] [2024-11-18 19:36:48,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:36:48,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:36:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:36:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:36:48,220 INFO L87 Difference]: Start difference. First operand 635 states and 1045 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-18 19:36:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:49,065 INFO L93 Difference]: Finished difference Result 1282 states and 2100 transitions. [2024-11-18 19:36:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 19:36:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) Word has length 504 [2024-11-18 19:36:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:49,074 INFO L225 Difference]: With dead ends: 1282 [2024-11-18 19:36:49,074 INFO L226 Difference]: Without dead ends: 650 [2024-11-18 19:36:49,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-18 19:36:49,078 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 545 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:49,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 710 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:36:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-18 19:36:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 640. [2024-11-18 19:36:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 464 states have (on average 1.5107758620689655) internal successors, (701), 467 states have internal predecessors, (701), 169 states have call successors, (169), 6 states have call predecessors, (169), 6 states have return successors, (169), 166 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-18 19:36:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1039 transitions. [2024-11-18 19:36:49,161 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1039 transitions. Word has length 504 [2024-11-18 19:36:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:49,164 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1039 transitions. [2024-11-18 19:36:49,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-18 19:36:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1039 transitions. [2024-11-18 19:36:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-18 19:36:49,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:49,172 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:49,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 19:36:49,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:49,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:49,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2091032866, now seen corresponding path program 1 times [2024-11-18 19:36:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996271190] [2024-11-18 19:36:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:36:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996271190] [2024-11-18 19:36:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996271190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:36:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950343575] [2024-11-18 19:36:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:49,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:36:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:36:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:36:49,949 INFO L87 Difference]: Start difference. First operand 640 states and 1039 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:50,026 INFO L93 Difference]: Finished difference Result 1281 states and 2079 transitions. [2024-11-18 19:36:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:36:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 505 [2024-11-18 19:36:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:50,033 INFO L225 Difference]: With dead ends: 1281 [2024-11-18 19:36:50,034 INFO L226 Difference]: Without dead ends: 644 [2024-11-18 19:36:50,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:36:50,037 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:50,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 378 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-18 19:36:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2024-11-18 19:36:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 464 states have (on average 1.5021551724137931) internal successors, (697), 467 states have internal predecessors, (697), 169 states have call successors, (169), 6 states have call predecessors, (169), 6 states have return successors, (169), 166 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-18 19:36:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1035 transitions. [2024-11-18 19:36:50,118 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1035 transitions. Word has length 505 [2024-11-18 19:36:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:50,119 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1035 transitions. [2024-11-18 19:36:50,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:36:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1035 transitions. [2024-11-18 19:36:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-18 19:36:50,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:50,123 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:50,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:36:50,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:50,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash 811169188, now seen corresponding path program 1 times [2024-11-18 19:36:50,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:50,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531605875] [2024-11-18 19:36:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:50,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 87 proven. 150 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2024-11-18 19:36:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531605875] [2024-11-18 19:36:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531605875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473785263] [2024-11-18 19:36:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:50,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:50,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:36:50,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:36:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:51,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:36:51,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5937 proven. 150 refuted. 0 times theorem prover too weak. 6553 trivial. 0 not checked. [2024-11-18 19:36:51,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:36:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 87 proven. 150 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2024-11-18 19:36:52,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473785263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:36:52,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:36:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-18 19:36:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039942654] [2024-11-18 19:36:52,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:36:52,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:36:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:36:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:36:52,566 INFO L87 Difference]: Start difference. First operand 640 states and 1035 transitions. Second operand has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 4 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 4 states have call predecessors, (181), 4 states have call successors, (181) [2024-11-18 19:36:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:53,145 INFO L93 Difference]: Finished difference Result 1041 states and 1661 transitions. [2024-11-18 19:36:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:36:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 4 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 4 states have call predecessors, (181), 4 states have call successors, (181) Word has length 505 [2024-11-18 19:36:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:53,151 INFO L225 Difference]: With dead ends: 1041 [2024-11-18 19:36:53,151 INFO L226 Difference]: Without dead ends: 404 [2024-11-18 19:36:53,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-18 19:36:53,154 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 462 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:53,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 648 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:36:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-18 19:36:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2024-11-18 19:36:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 276 states have (on average 1.4202898550724639) internal successors, (392), 277 states have internal predecessors, (392), 111 states have call successors, (111), 8 states have call predecessors, (111), 8 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-18 19:36:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 614 transitions. [2024-11-18 19:36:53,216 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 614 transitions. Word has length 505 [2024-11-18 19:36:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:53,217 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 614 transitions. [2024-11-18 19:36:53,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 4 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 4 states have call predecessors, (181), 4 states have call successors, (181) [2024-11-18 19:36:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 614 transitions. [2024-11-18 19:36:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-18 19:36:53,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:53,222 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:53,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 19:36:53,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:53,427 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:53,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 778648028, now seen corresponding path program 1 times [2024-11-18 19:36:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478038714] [2024-11-18 19:36:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 333 proven. 135 refuted. 0 times theorem prover too weak. 12172 trivial. 0 not checked. [2024-11-18 19:37:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:01,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478038714] [2024-11-18 19:37:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478038714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:37:01,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790037043] [2024-11-18 19:37:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:01,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:37:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:37:01,409 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) [2024-11-18 19:37:01,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:37:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:01,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 19:37:01,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:37:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 8679 proven. 456 refuted. 0 times theorem prover too weak. 3505 trivial. 0 not checked. [2024-11-18 19:37:09,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:37:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 477 proven. 225 refuted. 0 times theorem prover too weak. 11938 trivial. 0 not checked. [2024-11-18 19:37:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790037043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:37:11,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:37:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 17] total 50 [2024-11-18 19:37:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560588286] [2024-11-18 19:37:11,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:37:11,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 19:37:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 19:37:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2083, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 19:37:11,814 INFO L87 Difference]: Start difference. First operand 396 states and 614 transitions. Second operand has 50 states, 48 states have (on average 5.520833333333333) internal successors, (265), 47 states have internal predecessors, (265), 13 states have call successors, (169), 6 states have call predecessors, (169), 12 states have return successors, (170), 13 states have call predecessors, (170), 13 states have call successors, (170)