./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.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-83.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 0b7d7572b4223b408ecca691daf97dc79641f0b4c97b6315410d3e8868a73776 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:36:34,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:36:34,981 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:36:34,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:36:34,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:36:35,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:36:35,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:36:35,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:36:35,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:36:35,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:36:35,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:36:35,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:36:35,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:36:35,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:36:35,022 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:36:35,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:36:35,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:36:35,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:36:35,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:36:35,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:36:35,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:36:35,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:36:35,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:36:35,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:36:35,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:36:35,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:36:35,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:36:35,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:36:35,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:36:35,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:36:35,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:36:35,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:36:35,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:35,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:36:35,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:36:35,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:36:35,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:36:35,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:36:35,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:36:35,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:36:35,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:36:35,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:36:35,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b7d7572b4223b408ecca691daf97dc79641f0b4c97b6315410d3e8868a73776 [2024-11-18 19:36:35,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:36:35,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:36:35,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:36:35,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:36:35,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:36:35,368 INFO L431 ainManager$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-83.i [2024-11-18 19:36:36,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:36:37,265 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:36:37,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i [2024-11-18 19:36:37,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9120afee/412205d4e4d6400dbe3a9390f7fbba71/FLAG0c2adb01a [2024-11-18 19:36:37,590 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9120afee/412205d4e4d6400dbe3a9390f7fbba71 [2024-11-18 19:36:37,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:36:37,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:36:37,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:37,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:36:37,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:36:37,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:37" (1/1) ... [2024-11-18 19:36:37,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bf5ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:37, skipping insertion in model container [2024-11-18 19:36:37,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:37" (1/1) ... [2024-11-18 19:36:37,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:36:37,855 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-83.i[916,929] [2024-11-18 19:36:38,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:38,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:36:38,063 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-83.i[916,929] [2024-11-18 19:36:38,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:38,198 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:36:38,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38 WrapperNode [2024-11-18 19:36:38,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:38,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:38,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:36:38,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:36:38,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,368 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 698 [2024-11-18 19:36:38,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:38,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:36:38,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:36:38,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:36:38,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,459 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 19:36:38,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:36:38,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:36:38,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:36:38,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:36:38,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (1/1) ... [2024-11-18 19:36:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:38,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:38,568 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 19:36:38,579 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 19:36:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:36:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:36:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:36:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:36:38,766 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:36:38,768 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:36:39,977 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-18 19:36:39,977 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:36:40,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:36:40,008 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:36:40,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:40 BoogieIcfgContainer [2024-11-18 19:36:40,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:36:40,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:36:40,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:36:40,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:36:40,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:36:37" (1/3) ... [2024-11-18 19:36:40,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6090b80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:40, skipping insertion in model container [2024-11-18 19:36:40,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:38" (2/3) ... [2024-11-18 19:36:40,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6090b80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:40, skipping insertion in model container [2024-11-18 19:36:40,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:40" (3/3) ... [2024-11-18 19:36:40,022 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-83.i [2024-11-18 19:36:40,041 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:36:40,041 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:36:40,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:36:40,146 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;@298ac4e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:36:40,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:36:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 193 states have (on average 1.5336787564766838) internal successors, (296), 194 states have internal predecessors, (296), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-18 19:36:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-18 19:36:40,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:40,204 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:40,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:40,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -729050332, now seen corresponding path program 1 times [2024-11-18 19:36:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088405469] [2024-11-18 19:36:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:40,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-18 19:36:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088405469] [2024-11-18 19:36:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088405469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123405825] [2024-11-18 19:36:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:41,066 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 19:36:41,068 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 19:36:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:41,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:36:41,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-18 19:36:41,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:36:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123405825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:41,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:36:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:36:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513591063] [2024-11-18 19:36:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:41,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:36:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:41,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:36:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:36:41,608 INFO L87 Difference]: Start difference. First operand has 285 states, 193 states have (on average 1.5336787564766838) internal successors, (296), 194 states have internal predecessors, (296), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-18 19:36:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:41,698 INFO L93 Difference]: Finished difference Result 563 states and 1031 transitions. [2024-11-18 19:36:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:36:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 557 [2024-11-18 19:36:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:41,718 INFO L225 Difference]: With dead ends: 563 [2024-11-18 19:36:41,719 INFO L226 Difference]: Without dead ends: 281 [2024-11-18 19:36:41,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 558 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 19:36:41,734 INFO L432 NwaCegarLoop]: 467 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, 467 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 19:36:41,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-18 19:36:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-18 19:36:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.5210526315789474) internal successors, (289), 190 states have internal predecessors, (289), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-18 19:36:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 467 transitions. [2024-11-18 19:36:41,844 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 467 transitions. Word has length 557 [2024-11-18 19:36:41,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:41,846 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 467 transitions. [2024-11-18 19:36:41,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-18 19:36:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 467 transitions. [2024-11-18 19:36:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-18 19:36:41,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:41,864 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:41,884 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 19:36:42,068 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 19:36:42,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:42,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1659331394, now seen corresponding path program 1 times [2024-11-18 19:36:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071156535] [2024-11-18 19:36:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-18 19:36:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071156535] [2024-11-18 19:36:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071156535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:36:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116915723] [2024-11-18 19:36:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:42,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:36:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:36:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:42,654 INFO L87 Difference]: Start difference. First operand 281 states and 467 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:42,745 INFO L93 Difference]: Finished difference Result 732 states and 1218 transitions. [2024-11-18 19:36:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:36:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 557 [2024-11-18 19:36:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:42,756 INFO L225 Difference]: With dead ends: 732 [2024-11-18 19:36:42,756 INFO L226 Difference]: Without dead ends: 454 [2024-11-18 19:36:42,759 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 19:36:42,760 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 266 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:42,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 919 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-18 19:36:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2024-11-18 19:36:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 315 states have (on average 1.5365079365079366) internal successors, (484), 316 states have internal predecessors, (484), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:36:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 750 transitions. [2024-11-18 19:36:42,824 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 750 transitions. Word has length 557 [2024-11-18 19:36:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:42,826 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 750 transitions. [2024-11-18 19:36:42,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 750 transitions. [2024-11-18 19:36:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-18 19:36:42,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:42,838 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:42,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:36:42,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:42,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1174589954, now seen corresponding path program 1 times [2024-11-18 19:36:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526487079] [2024-11-18 19:36:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:36:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:44,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526487079] [2024-11-18 19:36:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526487079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015627616] [2024-11-18 19:36:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:44,337 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 19:36:44,339 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 19:36:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:44,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 19:36:44,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10612 proven. 150 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2024-11-18 19:36:46,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:36:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 114 proven. 150 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:36:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015627616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:36:46,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:36:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-18 19:36:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703548522] [2024-11-18 19:36:46,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:36:46,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 19:36:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 19:36:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-18 19:36:46,841 INFO L87 Difference]: Start difference. First operand 451 states and 750 transitions. Second operand has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 8 states have call successors, (199), 4 states have call predecessors, (199), 6 states have return successors, (201), 8 states have call predecessors, (201), 8 states have call successors, (201) [2024-11-18 19:36:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:49,350 INFO L93 Difference]: Finished difference Result 1525 states and 2474 transitions. [2024-11-18 19:36:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 19:36:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 8 states have call successors, (199), 4 states have call predecessors, (199), 6 states have return successors, (201), 8 states have call predecessors, (201), 8 states have call successors, (201) Word has length 557 [2024-11-18 19:36:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:49,370 INFO L225 Difference]: With dead ends: 1525 [2024-11-18 19:36:49,370 INFO L226 Difference]: Without dead ends: 1077 [2024-11-18 19:36:49,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1109 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 19:36:49,376 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 2470 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:49,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2472 Valid, 1639 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 19:36:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-11-18 19:36:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 664. [2024-11-18 19:36:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 481 states have (on average 1.525987525987526) internal successors, (734), 483 states have internal predecessors, (734), 171 states have call successors, (171), 11 states have call predecessors, (171), 11 states have return successors, (171), 169 states have call predecessors, (171), 171 states have call successors, (171) [2024-11-18 19:36:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1076 transitions. [2024-11-18 19:36:49,471 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1076 transitions. Word has length 557 [2024-11-18 19:36:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:49,473 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1076 transitions. [2024-11-18 19:36:49,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 8 states have call successors, (199), 4 states have call predecessors, (199), 6 states have return successors, (201), 8 states have call predecessors, (201), 8 states have call successors, (201) [2024-11-18 19:36:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1076 transitions. [2024-11-18 19:36:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2024-11-18 19:36:49,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:49,486 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:49,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 19:36:49,687 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,SelfDestructingSolverStorable2 [2024-11-18 19:36:49,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:49,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1320857227, now seen corresponding path program 1 times [2024-11-18 19:36:49,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:49,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132191636] [2024-11-18 19:36:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-18 19:36:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:50,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132191636] [2024-11-18 19:36:50,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132191636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:50,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 19:36:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778264828] [2024-11-18 19:36:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:50,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:36:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:36:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:36:50,550 INFO L87 Difference]: Start difference. First operand 664 states and 1076 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:53,092 INFO L93 Difference]: Finished difference Result 4778 states and 7804 transitions. [2024-11-18 19:36:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 19:36:53,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 558 [2024-11-18 19:36:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:53,136 INFO L225 Difference]: With dead ends: 4778 [2024-11-18 19:36:53,137 INFO L226 Difference]: Without dead ends: 4117 [2024-11-18 19:36:53,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-18 19:36:53,143 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 2365 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:53,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 3083 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 19:36:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-11-18 19:36:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 1207. [2024-11-18 19:36:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 913 states have (on average 1.556407447973713) internal successors, (1421), 917 states have internal predecessors, (1421), 269 states have call successors, (269), 24 states have call predecessors, (269), 24 states have return successors, (269), 265 states have call predecessors, (269), 269 states have call successors, (269) [2024-11-18 19:36:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1959 transitions. [2024-11-18 19:36:53,380 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1959 transitions. Word has length 558 [2024-11-18 19:36:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:53,383 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1959 transitions. [2024-11-18 19:36:53,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1959 transitions. [2024-11-18 19:36:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2024-11-18 19:36:53,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:53,390 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:53,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:36:53,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:53,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash -512540842, now seen corresponding path program 1 times [2024-11-18 19:36:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:53,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903552484] [2024-11-18 19:36:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-18 19:36:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903552484] [2024-11-18 19:36:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903552484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:36:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763118944] [2024-11-18 19:36:54,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:54,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:36:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:36:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:36:54,134 INFO L87 Difference]: Start difference. First operand 1207 states and 1959 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-18 19:36:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:55,600 INFO L93 Difference]: Finished difference Result 4326 states and 7058 transitions. [2024-11-18 19:36:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:36:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 559 [2024-11-18 19:36:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:55,625 INFO L225 Difference]: With dead ends: 4326 [2024-11-18 19:36:55,625 INFO L226 Difference]: Without dead ends: 3122 [2024-11-18 19:36:55,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:36:55,636 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 1144 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:55,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1749 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 19:36:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-11-18 19:36:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 830. [2024-11-18 19:36:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 683 states have (on average 1.6325036603221084) internal successors, (1115), 684 states have internal predecessors, (1115), 133 states have call successors, (133), 13 states have call predecessors, (133), 13 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:36:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1381 transitions. [2024-11-18 19:36:55,817 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1381 transitions. Word has length 559 [2024-11-18 19:36:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:55,818 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1381 transitions. [2024-11-18 19:36:55,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-18 19:36:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1381 transitions. [2024-11-18 19:36:55,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2024-11-18 19:36:55,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:55,825 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:55,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:36:55,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:55,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash 319651201, now seen corresponding path program 1 times [2024-11-18 19:36:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090820809] [2024-11-18 19:36:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-18 19:36:56,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:56,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090820809] [2024-11-18 19:36:56,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090820809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:56,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:56,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:36:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001244896] [2024-11-18 19:36:56,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:56,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:36:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:36:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:36:56,494 INFO L87 Difference]: Start difference. First operand 830 states and 1381 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:56,928 INFO L93 Difference]: Finished difference Result 2153 states and 3610 transitions. [2024-11-18 19:36:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:36:56,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 559 [2024-11-18 19:36:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:56,938 INFO L225 Difference]: With dead ends: 2153 [2024-11-18 19:36:56,938 INFO L226 Difference]: Without dead ends: 1326 [2024-11-18 19:36:56,941 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 19:36:56,942 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 302 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:56,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1597 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:36:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-11-18 19:36:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 750. [2024-11-18 19:36:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 603 states have (on average 1.6102819237147596) internal successors, (971), 604 states have internal predecessors, (971), 133 states have call successors, (133), 13 states have call predecessors, (133), 13 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:36:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1237 transitions. [2024-11-18 19:36:57,024 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1237 transitions. Word has length 559 [2024-11-18 19:36:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:57,025 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1237 transitions. [2024-11-18 19:36:57,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:36:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1237 transitions. [2024-11-18 19:36:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2024-11-18 19:36:57,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:57,031 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:57,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:36:57,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:57,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1073240620, now seen corresponding path program 1 times [2024-11-18 19:36:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:57,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987619438] [2024-11-18 19:36:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:36:58,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987619438] [2024-11-18 19:36:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987619438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466214450] [2024-11-18 19:36:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:58,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:58,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:58,076 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 19:36:58,095 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 19:36:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:58,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:36:58,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7648 proven. 156 refuted. 0 times theorem prover too weak. 7860 trivial. 0 not checked. [2024-11-18 19:36:58,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:36:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 108 proven. 156 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:36:59,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466214450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:36:59,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:36:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-11-18 19:36:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501263208] [2024-11-18 19:36:59,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:36:59,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 19:36:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 19:36:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-18 19:36:59,492 INFO L87 Difference]: Start difference. First operand 750 states and 1237 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 5 states have call predecessors, (203), 5 states have call successors, (203) [2024-11-18 19:37:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:01,166 INFO L93 Difference]: Finished difference Result 1944 states and 3213 transitions. [2024-11-18 19:37:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 19:37:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 5 states have call predecessors, (203), 5 states have call successors, (203) Word has length 559 [2024-11-18 19:37:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:01,180 INFO L225 Difference]: With dead ends: 1944 [2024-11-18 19:37:01,180 INFO L226 Difference]: Without dead ends: 1197 [2024-11-18 19:37:01,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2024-11-18 19:37:01,184 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 1134 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:01,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1226 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 19:37:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-18 19:37:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 839. [2024-11-18 19:37:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 690 states have (on average 1.5913043478260869) internal successors, (1098), 691 states have internal predecessors, (1098), 133 states have call successors, (133), 15 states have call predecessors, (133), 15 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:37:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1364 transitions. [2024-11-18 19:37:01,304 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1364 transitions. Word has length 559 [2024-11-18 19:37:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:01,305 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1364 transitions. [2024-11-18 19:37:01,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 5 states have call predecessors, (203), 5 states have call successors, (203) [2024-11-18 19:37:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1364 transitions. [2024-11-18 19:37:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-11-18 19:37:01,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:01,310 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:01,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:37:01,511 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 19:37:01,512 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:01,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1948232917, now seen corresponding path program 1 times [2024-11-18 19:37:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:01,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057011074] [2024-11-18 19:37:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:01,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:37:02,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:02,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057011074] [2024-11-18 19:37:02,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057011074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:37:02,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817657006] [2024-11-18 19:37:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:02,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:37:02,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:37:02,805 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 19:37:02,807 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 19:37:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:03,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 19:37:03,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:37:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6864 proven. 180 refuted. 0 times theorem prover too weak. 8620 trivial. 0 not checked. [2024-11-18 19:37:03,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:37:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:37:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817657006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:37:05,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:37:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 19:37:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525411379] [2024-11-18 19:37:05,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:37:05,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 19:37:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 19:37:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-18 19:37:05,050 INFO L87 Difference]: Start difference. First operand 839 states and 1364 transitions. Second operand has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) [2024-11-18 19:37:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:06,941 INFO L93 Difference]: Finished difference Result 2184 states and 3576 transitions. [2024-11-18 19:37:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 19:37:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) Word has length 560 [2024-11-18 19:37:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:06,951 INFO L225 Difference]: With dead ends: 2184 [2024-11-18 19:37:06,952 INFO L226 Difference]: Without dead ends: 1348 [2024-11-18 19:37:06,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2024-11-18 19:37:06,956 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 1000 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:06,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 3086 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 19:37:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2024-11-18 19:37:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 779. [2024-11-18 19:37:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 630 states have (on average 1.5777777777777777) internal successors, (994), 631 states have internal predecessors, (994), 133 states have call successors, (133), 15 states have call predecessors, (133), 15 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:37:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1260 transitions. [2024-11-18 19:37:07,099 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1260 transitions. Word has length 560 [2024-11-18 19:37:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:07,100 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1260 transitions. [2024-11-18 19:37:07,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) [2024-11-18 19:37:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1260 transitions. [2024-11-18 19:37:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-18 19:37:07,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:07,109 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:07,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 19:37:07,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:37:07,310 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:07,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash -635919640, now seen corresponding path program 1 times [2024-11-18 19:37:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391785924] [2024-11-18 19:37:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-18 19:37:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391785924] [2024-11-18 19:37:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391785924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:37:07,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461835197] [2024-11-18 19:37:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:07,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:37:07,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:37:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:37:07,625 INFO L87 Difference]: Start difference. First operand 779 states and 1260 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:37:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:07,848 INFO L93 Difference]: Finished difference Result 1883 states and 3014 transitions. [2024-11-18 19:37:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:37:07,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 561 [2024-11-18 19:37:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:07,859 INFO L225 Difference]: With dead ends: 1883 [2024-11-18 19:37:07,859 INFO L226 Difference]: Without dead ends: 1107 [2024-11-18 19:37:07,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:37:07,863 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 286 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:07,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 874 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:37:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-11-18 19:37:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 685. [2024-11-18 19:37:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 536 states have (on average 1.541044776119403) internal successors, (826), 537 states have internal predecessors, (826), 133 states have call successors, (133), 15 states have call predecessors, (133), 15 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 19:37:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1092 transitions. [2024-11-18 19:37:07,969 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1092 transitions. Word has length 561 [2024-11-18 19:37:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:07,970 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1092 transitions. [2024-11-18 19:37:07,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-18 19:37:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1092 transitions. [2024-11-18 19:37:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-18 19:37:08,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:08,005 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:08,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:37:08,005 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:08,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -287543911, now seen corresponding path program 1 times [2024-11-18 19:37:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911627003] [2024-11-18 19:37:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 195 proven. 327 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-11-18 19:37:27,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911627003] [2024-11-18 19:37:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911627003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:37:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489531819] [2024-11-18 19:37:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:37:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:37:27,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:37:27,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 19:37:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:27,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 19:37:27,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:37:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 8664 proven. 636 refuted. 0 times theorem prover too weak. 6364 trivial. 0 not checked. [2024-11-18 19:37:31,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:37:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 114 proven. 150 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-18 19:37:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489531819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:37:35,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:37:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 48 [2024-11-18 19:37:35,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799767311] [2024-11-18 19:37:35,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:37:35,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-18 19:37:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-18 19:37:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1967, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 19:37:35,462 INFO L87 Difference]: Start difference. First operand 685 states and 1092 transitions. Second operand has 48 states, 48 states have (on average 6.791666666666667) internal successors, (326), 46 states have internal predecessors, (326), 9 states have call successors, (267), 6 states have call predecessors, (267), 10 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267)