./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-32.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-32.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 0dc1ea3f6d575c3373292fe3183b9746ee1849ecfd8e379a22948351cc030925 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:22:20,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:22:20,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:22:20,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:22:20,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:22:20,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:22:20,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:22:20,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:22:20,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:22:20,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:22:20,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:22:20,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:22:20,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:22:20,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:22:20,195 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:22:20,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:22:20,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:22:20,196 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:22:20,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:22:20,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:22:20,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:22:20,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:22:20,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:22:20,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:22:20,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:22:20,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:22:20,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:22:20,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:22:20,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:22:20,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:22:20,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:22:20,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:22:20,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:22:20,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:22:20,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:22:20,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:22:20,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:22:20,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:22:20,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:22:20,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:22:20,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:22:20,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:22:20,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dc1ea3f6d575c3373292fe3183b9746ee1849ecfd8e379a22948351cc030925 [2024-11-22 07:22:20,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:22:20,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:22:20,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:22:20,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:22:20,500 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:22:20,501 INFO L431 ainManager$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-32.i [2024-11-22 07:22:21,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:22:22,246 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:22:22,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-32.i [2024-11-22 07:22:22,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354700198/b32e4062242f41769199af57db11a536/FLAG49189cf86 [2024-11-22 07:22:22,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354700198/b32e4062242f41769199af57db11a536 [2024-11-22 07:22:22,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:22:22,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:22:22,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:22:22,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:22:22,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:22:22,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:22:22" (1/1) ... [2024-11-22 07:22:22,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebee5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:22, skipping insertion in model container [2024-11-22 07:22:22,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:22:22" (1/1) ... [2024-11-22 07:22:22,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:22:22,787 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-32.i[916,929] [2024-11-22 07:22:22,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:22:22,996 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:22:23,011 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-32.i[916,929] [2024-11-22 07:22:23,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:22:23,101 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:22:23,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23 WrapperNode [2024-11-22 07:22:23,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:22:23,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:22:23,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:22:23,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:22:23,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,183 INFO L138 Inliner]: procedures = 26, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 589 [2024-11-22 07:22:23,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:22:23,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:22:23,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:22:23,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:22:23,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,232 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 07:22:23,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:22:23,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:22:23,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:22:23,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:22:23,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (1/1) ... [2024-11-22 07:22:23,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:22:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:23,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 07:22:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 07:22:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:22:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:22:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:22:23,502 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:22:23,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:22:24,407 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 07:22:24,409 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:22:24,434 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:22:24,435 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:22:24,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:22:24 BoogieIcfgContainer [2024-11-22 07:22:24,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:22:24,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:22:24,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:22:24,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:22:24,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:22:22" (1/3) ... [2024-11-22 07:22:24,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e53ef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:22:24, skipping insertion in model container [2024-11-22 07:22:24,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:23" (2/3) ... [2024-11-22 07:22:24,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e53ef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:22:24, skipping insertion in model container [2024-11-22 07:22:24,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:22:24" (3/3) ... [2024-11-22 07:22:24,445 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-32.i [2024-11-22 07:22:24,463 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:22:24,463 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:22:24,540 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:22:24,546 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;@3d1dbea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:22:24,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:22:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 166 states have (on average 1.5481927710843373) internal successors, (257), 167 states have internal predecessors, (257), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-22 07:22:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 07:22:24,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:24,577 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:24,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:24,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -449951100, now seen corresponding path program 1 times [2024-11-22 07:22:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:24,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438461397] [2024-11-22 07:22:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2024-11-22 07:22:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:25,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438461397] [2024-11-22 07:22:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438461397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:22:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651738075] [2024-11-22 07:22:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:25,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:25,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:22:25,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:22:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:25,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:22:25,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:22:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2024-11-22 07:22:25,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:22:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651738075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:22:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:22:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153773349] [2024-11-22 07:22:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:25,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:22:25,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:22:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:22:25,689 INFO L87 Difference]: Start difference. First operand has 243 states, 166 states have (on average 1.5481927710843373) internal successors, (257), 167 states have internal predecessors, (257), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-22 07:22:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:25,764 INFO L93 Difference]: Finished difference Result 479 states and 878 transitions. [2024-11-22 07:22:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:22:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) Word has length 466 [2024-11-22 07:22:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:25,780 INFO L225 Difference]: With dead ends: 479 [2024-11-22 07:22:25,780 INFO L226 Difference]: Without dead ends: 239 [2024-11-22 07:22:25,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:22:25,795 INFO L432 NwaCegarLoop]: 398 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, 398 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:25,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-22 07:22:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-11-22 07:22:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 163 states have (on average 1.5337423312883436) internal successors, (250), 163 states have internal predecessors, (250), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-22 07:22:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 398 transitions. [2024-11-22 07:22:25,889 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 398 transitions. Word has length 466 [2024-11-22 07:22:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:25,890 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 398 transitions. [2024-11-22 07:22:25,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-22 07:22:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 398 transitions. [2024-11-22 07:22:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 07:22:25,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:25,907 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:25,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 07:22:26,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 07:22:26,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:26,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -352252868, now seen corresponding path program 1 times [2024-11-22 07:22:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107767262] [2024-11-22 07:22:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-22 07:22:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107767262] [2024-11-22 07:22:26,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107767262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:26,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:26,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:22:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872591210] [2024-11-22 07:22:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:26,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:22:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:22:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:22:26,567 INFO L87 Difference]: Start difference. First operand 239 states and 398 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:26,669 INFO L93 Difference]: Finished difference Result 710 states and 1186 transitions. [2024-11-22 07:22:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:22:26,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 466 [2024-11-22 07:22:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:26,678 INFO L225 Difference]: With dead ends: 710 [2024-11-22 07:22:26,679 INFO L226 Difference]: Without dead ends: 474 [2024-11-22 07:22:26,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:22:26,684 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 387 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:26,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 862 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-22 07:22:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 468. [2024-11-22 07:22:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 317 states have (on average 1.5331230283911672) internal successors, (486), 317 states have internal predecessors, (486), 148 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 07:22:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 782 transitions. [2024-11-22 07:22:26,763 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 782 transitions. Word has length 466 [2024-11-22 07:22:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:26,765 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 782 transitions. [2024-11-22 07:22:26,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 782 transitions. [2024-11-22 07:22:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 07:22:26,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:26,777 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:26,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:22:26,777 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:26,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1373321222, now seen corresponding path program 1 times [2024-11-22 07:22:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891732985] [2024-11-22 07:22:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-22 07:22:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:27,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891732985] [2024-11-22 07:22:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891732985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:27,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:27,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:22:27,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160899772] [2024-11-22 07:22:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:27,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:22:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:22:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:22:27,153 INFO L87 Difference]: Start difference. First operand 468 states and 782 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:27,246 INFO L93 Difference]: Finished difference Result 1398 states and 2340 transitions. [2024-11-22 07:22:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:22:27,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 466 [2024-11-22 07:22:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:27,255 INFO L225 Difference]: With dead ends: 1398 [2024-11-22 07:22:27,256 INFO L226 Difference]: Without dead ends: 933 [2024-11-22 07:22:27,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:22:27,261 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 232 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:27,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 782 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-22 07:22:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2024-11-22 07:22:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 628 states have (on average 1.5318471337579618) internal successors, (962), 628 states have internal predecessors, (962), 296 states have call successors, (296), 4 states have call predecessors, (296), 4 states have return successors, (296), 296 states have call predecessors, (296), 296 states have call successors, (296) [2024-11-22 07:22:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1554 transitions. [2024-11-22 07:22:27,378 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1554 transitions. Word has length 466 [2024-11-22 07:22:27,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:27,384 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1554 transitions. [2024-11-22 07:22:27,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1554 transitions. [2024-11-22 07:22:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 07:22:27,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:27,395 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:27,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:22:27,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:27,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 401686140, now seen corresponding path program 1 times [2024-11-22 07:22:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852359858] [2024-11-22 07:22:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-22 07:22:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852359858] [2024-11-22 07:22:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852359858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:29,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 07:22:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69575797] [2024-11-22 07:22:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:29,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 07:22:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 07:22:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:22:29,015 INFO L87 Difference]: Start difference. First operand 929 states and 1554 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-22 07:22:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:32,121 INFO L93 Difference]: Finished difference Result 5223 states and 8775 transitions. [2024-11-22 07:22:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:22:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 466 [2024-11-22 07:22:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:32,149 INFO L225 Difference]: With dead ends: 5223 [2024-11-22 07:22:32,149 INFO L226 Difference]: Without dead ends: 4297 [2024-11-22 07:22:32,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:22:32,156 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 2247 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:32,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 2567 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 07:22:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2024-11-22 07:22:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3241. [2024-11-22 07:22:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3241 states, 2448 states have (on average 1.619281045751634) internal successors, (3964), 2456 states have internal predecessors, (3964), 776 states have call successors, (776), 16 states have call predecessors, (776), 16 states have return successors, (776), 768 states have call predecessors, (776), 776 states have call successors, (776) [2024-11-22 07:22:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5516 transitions. [2024-11-22 07:22:32,557 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5516 transitions. Word has length 466 [2024-11-22 07:22:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:32,558 INFO L471 AbstractCegarLoop]: Abstraction has 3241 states and 5516 transitions. [2024-11-22 07:22:32,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-22 07:22:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5516 transitions. [2024-11-22 07:22:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 07:22:32,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:32,568 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:32,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:22:32,568 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:32,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash 824387966, now seen corresponding path program 1 times [2024-11-22 07:22:32,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561910460] [2024-11-22 07:22:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 42 proven. 177 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:22:33,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561910460] [2024-11-22 07:22:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561910460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:22:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533668206] [2024-11-22 07:22:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:33,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:22:33,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 07:22:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:33,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 07:22:33,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:22:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4545 proven. 63 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2024-11-22 07:22:34,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:22:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 156 proven. 63 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:22:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533668206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:22:35,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:22:35,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2024-11-22 07:22:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482385667] [2024-11-22 07:22:35,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:22:35,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 07:22:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 07:22:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:22:35,427 INFO L87 Difference]: Start difference. First operand 3241 states and 5516 transitions. Second operand has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 6 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (222), 6 states have call predecessors, (222), 6 states have call successors, (222) [2024-11-22 07:22:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:40,929 INFO L93 Difference]: Finished difference Result 13797 states and 22861 transitions. [2024-11-22 07:22:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-22 07:22:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 6 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (222), 6 states have call predecessors, (222), 6 states have call successors, (222) Word has length 466 [2024-11-22 07:22:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:41,009 INFO L225 Difference]: With dead ends: 13797 [2024-11-22 07:22:41,010 INFO L226 Difference]: Without dead ends: 10559 [2024-11-22 07:22:41,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1292, Invalid=4714, Unknown=0, NotChecked=0, Total=6006 [2024-11-22 07:22:41,029 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 2853 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 1730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 4368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1730 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:41,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2871 Valid, 3037 Invalid, 4368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1730 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-22 07:22:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2024-11-22 07:22:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 7391. [2024-11-22 07:22:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7391 states, 5077 states have (on average 1.5062044514477053) internal successors, (7647), 5111 states have internal predecessors, (7647), 2215 states have call successors, (2215), 98 states have call predecessors, (2215), 98 states have return successors, (2215), 2181 states have call predecessors, (2215), 2215 states have call successors, (2215) [2024-11-22 07:22:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 12077 transitions. [2024-11-22 07:22:42,185 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 12077 transitions. Word has length 466 [2024-11-22 07:22:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:42,187 INFO L471 AbstractCegarLoop]: Abstraction has 7391 states and 12077 transitions. [2024-11-22 07:22:42,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 6 states have call successors, (222), 3 states have call predecessors, (222), 6 states have return successors, (222), 6 states have call predecessors, (222), 6 states have call successors, (222) [2024-11-22 07:22:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 12077 transitions. [2024-11-22 07:22:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 07:22:42,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:42,199 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:42,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 07:22:42,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:42,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:42,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash 94955134, now seen corresponding path program 1 times [2024-11-22 07:22:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736356755] [2024-11-22 07:22:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-22 07:22:42,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736356755] [2024-11-22 07:22:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736356755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:42,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:42,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:22:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336456062] [2024-11-22 07:22:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:42,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:22:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:22:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:42,916 INFO L87 Difference]: Start difference. First operand 7391 states and 12077 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:44,451 INFO L93 Difference]: Finished difference Result 20909 states and 34123 transitions. [2024-11-22 07:22:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:22:44,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 468 [2024-11-22 07:22:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:44,564 INFO L225 Difference]: With dead ends: 20909 [2024-11-22 07:22:44,565 INFO L226 Difference]: Without dead ends: 13544 [2024-11-22 07:22:44,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:22:44,599 INFO L432 NwaCegarLoop]: 576 mSDtfsCounter, 500 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:44,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 957 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:22:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13544 states. [2024-11-22 07:22:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13544 to 13339. [2024-11-22 07:22:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13339 states, 9169 states have (on average 1.489039153669975) internal successors, (13653), 9247 states have internal predecessors, (13653), 3983 states have call successors, (3983), 186 states have call predecessors, (3983), 186 states have return successors, (3983), 3905 states have call predecessors, (3983), 3983 states have call successors, (3983) [2024-11-22 07:22:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13339 states to 13339 states and 21619 transitions. [2024-11-22 07:22:46,513 INFO L78 Accepts]: Start accepts. Automaton has 13339 states and 21619 transitions. Word has length 468 [2024-11-22 07:22:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:46,514 INFO L471 AbstractCegarLoop]: Abstraction has 13339 states and 21619 transitions. [2024-11-22 07:22:46,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13339 states and 21619 transitions. [2024-11-22 07:22:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 07:22:46,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:46,522 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:46,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:22:46,522 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:46,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1116023488, now seen corresponding path program 1 times [2024-11-22 07:22:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917019213] [2024-11-22 07:22:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-22 07:22:48,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917019213] [2024-11-22 07:22:48,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917019213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:48,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:48,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 07:22:48,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536546962] [2024-11-22 07:22:48,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:48,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 07:22:48,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 07:22:48,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:22:48,281 INFO L87 Difference]: Start difference. First operand 13339 states and 21619 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:54,692 INFO L93 Difference]: Finished difference Result 46949 states and 75612 transitions. [2024-11-22 07:22:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 07:22:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 468 [2024-11-22 07:22:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:54,893 INFO L225 Difference]: With dead ends: 46949 [2024-11-22 07:22:54,893 INFO L226 Difference]: Without dead ends: 33636 [2024-11-22 07:22:54,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-11-22 07:22:54,979 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 2406 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:54,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 3035 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-22 07:22:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33636 states. [2024-11-22 07:22:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33636 to 21941. [2024-11-22 07:22:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21941 states, 15784 states have (on average 1.5121642169285352) internal successors, (23868), 15941 states have internal predecessors, (23868), 5809 states have call successors, (5809), 347 states have call predecessors, (5809), 347 states have return successors, (5809), 5652 states have call predecessors, (5809), 5809 states have call successors, (5809) [2024-11-22 07:22:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21941 states to 21941 states and 35486 transitions. [2024-11-22 07:22:57,662 INFO L78 Accepts]: Start accepts. Automaton has 21941 states and 35486 transitions. Word has length 468 [2024-11-22 07:22:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:57,663 INFO L471 AbstractCegarLoop]: Abstraction has 21941 states and 35486 transitions. [2024-11-22 07:22:57,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-22 07:22:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 21941 states and 35486 transitions. [2024-11-22 07:22:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 07:22:57,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:57,673 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:22:57,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:22:57,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:57,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:57,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1334878206, now seen corresponding path program 1 times [2024-11-22 07:22:57,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:57,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079568978] [2024-11-22 07:22:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:57,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 153 proven. 66 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:22:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079568978] [2024-11-22 07:22:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079568978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:22:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332575373] [2024-11-22 07:22:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:58,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:58,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:58,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:22:58,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 07:22:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:58,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:22:58,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:22:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4663 proven. 66 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2024-11-22 07:22:59,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:22:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 153 proven. 66 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:22:59,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332575373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:22:59,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:22:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 07:22:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802433215] [2024-11-22 07:22:59,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:22:59,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:22:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:22:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:22:59,614 INFO L87 Difference]: Start difference. First operand 21941 states and 35486 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2024-11-22 07:23:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:00,571 INFO L93 Difference]: Finished difference Result 28223 states and 45861 transitions. [2024-11-22 07:23:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:23:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 468 [2024-11-22 07:23:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:00,627 INFO L225 Difference]: With dead ends: 28223 [2024-11-22 07:23:00,628 INFO L226 Difference]: Without dead ends: 3791 [2024-11-22 07:23:00,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 933 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:23:00,689 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 244 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:00,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 783 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:23:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2024-11-22 07:23:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3717. [2024-11-22 07:23:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 2708 states have (on average 1.4933530280649927) internal successors, (4044), 2729 states have internal predecessors, (4044), 941 states have call successors, (941), 67 states have call predecessors, (941), 67 states have return successors, (941), 920 states have call predecessors, (941), 941 states have call successors, (941) [2024-11-22 07:23:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5926 transitions. [2024-11-22 07:23:01,408 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5926 transitions. Word has length 468 [2024-11-22 07:23:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:01,410 INFO L471 AbstractCegarLoop]: Abstraction has 3717 states and 5926 transitions. [2024-11-22 07:23:01,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2024-11-22 07:23:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5926 transitions. [2024-11-22 07:23:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 07:23:01,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:01,418 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:23:01,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 07:23:01,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:01,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:01,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1521356727, now seen corresponding path program 1 times [2024-11-22 07:23:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010316941] [2024-11-22 07:23:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:01,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 162 proven. 57 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:23:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010316941] [2024-11-22 07:23:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010316941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571937711] [2024-11-22 07:23:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:02,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:02,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:02,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:23:02,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 07:23:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:02,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 07:23:02,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4306 proven. 108 refuted. 0 times theorem prover too weak. 6390 trivial. 0 not checked. [2024-11-22 07:23:02,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 162 proven. 57 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-22 07:23:03,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571937711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:03,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:03,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 12 [2024-11-22 07:23:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239712337] [2024-11-22 07:23:03,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:03,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 07:23:03,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 07:23:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:23:03,214 INFO L87 Difference]: Start difference. First operand 3717 states and 5926 transitions. Second operand has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 3 states have call successors, (93), 3 states have call predecessors, (93), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2024-11-22 07:23:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:05,032 INFO L93 Difference]: Finished difference Result 9887 states and 15693 transitions. [2024-11-22 07:23:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 07:23:05,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 3 states have call successors, (93), 3 states have call predecessors, (93), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 469 [2024-11-22 07:23:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:05,065 INFO L225 Difference]: With dead ends: 9887 [2024-11-22 07:23:05,066 INFO L226 Difference]: Without dead ends: 6225 [2024-11-22 07:23:05,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 933 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 07:23:05,080 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 1498 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:05,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1986 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:23:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6225 states. [2024-11-22 07:23:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6225 to 4219. [2024-11-22 07:23:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 3194 states have (on average 1.487789605510332) internal successors, (4752), 3215 states have internal predecessors, (4752), 941 states have call successors, (941), 83 states have call predecessors, (941), 83 states have return successors, (941), 920 states have call predecessors, (941), 941 states have call successors, (941) [2024-11-22 07:23:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 6634 transitions. [2024-11-22 07:23:05,834 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 6634 transitions. Word has length 469 [2024-11-22 07:23:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:05,836 INFO L471 AbstractCegarLoop]: Abstraction has 4219 states and 6634 transitions. [2024-11-22 07:23:05,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 3 states have call successors, (93), 3 states have call predecessors, (93), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2024-11-22 07:23:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 6634 transitions. [2024-11-22 07:23:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-22 07:23:05,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:05,846 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:23:05,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 07:23:06,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:06,047 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:06,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1251556812, now seen corresponding path program 1 times [2024-11-22 07:23:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353804358] [2024-11-22 07:23:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 231 proven. 201 refuted. 0 times theorem prover too weak. 10372 trivial. 0 not checked. [2024-11-22 07:23:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353804358] [2024-11-22 07:23:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353804358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183440925] [2024-11-22 07:23:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:07,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:07,210 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) [2024-11-22 07:23:07,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 07:23:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:07,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 07:23:07,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 7695 proven. 180 refuted. 0 times theorem prover too weak. 2929 trivial. 0 not checked. [2024-11-22 07:23:08,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 252 proven. 183 refuted. 0 times theorem prover too weak. 10369 trivial. 0 not checked. [2024-11-22 07:23:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183440925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:10,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 25 [2024-11-22 07:23:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789224243] [2024-11-22 07:23:10,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:10,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 07:23:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 07:23:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-22 07:23:10,588 INFO L87 Difference]: Start difference. First operand 4219 states and 6634 transitions. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 9 states have call successors, (162), 4 states have call predecessors, (162), 8 states have return successors, (164), 9 states have call predecessors, (164), 9 states have call successors, (164) [2024-11-22 07:23:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:21,321 INFO L93 Difference]: Finished difference Result 39113 states and 60451 transitions. [2024-11-22 07:23:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-22 07:23:21,322 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 9 states have call successors, (162), 4 states have call predecessors, (162), 8 states have return successors, (164), 9 states have call predecessors, (164), 9 states have call successors, (164) Word has length 470 [2024-11-22 07:23:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:21,448 INFO L225 Difference]: With dead ends: 39113 [2024-11-22 07:23:21,448 INFO L226 Difference]: Without dead ends: 34949 [2024-11-22 07:23:21,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7766 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4830, Invalid=17222, Unknown=0, NotChecked=0, Total=22052 [2024-11-22 07:23:21,478 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 4720 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 3444 mSolverCounterSat, 2254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2254 IncrementalHoareTripleChecker+Valid, 3444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:21,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4720 Valid, 3256 Invalid, 5698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2254 Valid, 3444 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-22 07:23:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34949 states. [2024-11-22 07:23:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34949 to 23601. [2024-11-22 07:23:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23601 states, 18432 states have (on average 1.4640842013888888) internal successors, (26986), 18597 states have internal predecessors, (26986), 4693 states have call successors, (4693), 475 states have call predecessors, (4693), 475 states have return successors, (4693), 4528 states have call predecessors, (4693), 4693 states have call successors, (4693) [2024-11-22 07:23:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23601 states to 23601 states and 36372 transitions. [2024-11-22 07:23:24,419 INFO L78 Accepts]: Start accepts. Automaton has 23601 states and 36372 transitions. Word has length 470 [2024-11-22 07:23:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:24,420 INFO L471 AbstractCegarLoop]: Abstraction has 23601 states and 36372 transitions. [2024-11-22 07:23:24,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 9 states have call successors, (162), 4 states have call predecessors, (162), 8 states have return successors, (164), 9 states have call predecessors, (164), 9 states have call successors, (164) [2024-11-22 07:23:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23601 states and 36372 transitions. [2024-11-22 07:23:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-22 07:23:24,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:24,438 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:23:24,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 07:23:24,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 07:23:24,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:24,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1228986778, now seen corresponding path program 1 times [2024-11-22 07:23:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811399780] [2024-11-22 07:23:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 354 proven. 486 refuted. 0 times theorem prover too weak. 9964 trivial. 0 not checked. [2024-11-22 07:23:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811399780] [2024-11-22 07:23:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811399780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035005958] [2024-11-22 07:23:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:26,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:26,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:23:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 07:23:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:27,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 07:23:27,155 INFO L278 TraceCheckSpWp]: Computing forward predicates...