./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c --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/float-benchs/zonotope_3.c -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 c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 23:13:44,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 23:13:44,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 23:13:44,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 23:13:44,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 23:13:44,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 23:13:44,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 23:13:44,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 23:13:44,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 23:13:44,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 23:13:44,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 23:13:44,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 23:13:44,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 23:13:44,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 23:13:44,333 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 23:13:44,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 23:13:44,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 23:13:44,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 23:13:44,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 23:13:44,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 23:13:44,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 23:13:44,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 23:13:44,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 23:13:44,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 23:13:44,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 23:13:44,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 23:13:44,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 23:13:44,337 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 23:13:44,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 23:13:44,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 23:13:44,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 23:13:44,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 23:13:44,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 23:13:44,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 23:13:44,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 23:13:44,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 23:13:44,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 23:13:44,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 23:13:44,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 23:13:44,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 23:13:44,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 23:13:44,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 23:13:44,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2024-11-21 23:13:44,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 23:13:44,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 23:13:44,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 23:13:44,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 23:13:44,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 23:13:44,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2024-11-21 23:13:46,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 23:13:46,266 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 23:13:46,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2024-11-21 23:13:46,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee0b3c49/d84595cbaed340398e28770c7a7ea83b/FLAGdbc5e8373 [2024-11-21 23:13:46,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee0b3c49/d84595cbaed340398e28770c7a7ea83b [2024-11-21 23:13:46,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 23:13:46,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 23:13:46,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 23:13:46,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 23:13:46,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 23:13:46,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403e5fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46, skipping insertion in model container [2024-11-21 23:13:46,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 23:13:46,875 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/float-benchs/zonotope_3.c[604,617] [2024-11-21 23:13:46,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 23:13:46,903 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 23:13:46,913 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/float-benchs/zonotope_3.c[604,617] [2024-11-21 23:13:46,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 23:13:46,932 INFO L204 MainTranslator]: Completed translation [2024-11-21 23:13:46,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46 WrapperNode [2024-11-21 23:13:46,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 23:13:46,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 23:13:46,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 23:13:46,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 23:13:46,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,962 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-21 23:13:46,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 23:13:46,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 23:13:46,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 23:13:46,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 23:13:46,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,983 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]. [2024-11-21 23:13:46,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:46,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 23:13:46,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 23:13:46,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 23:13:46,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 23:13:47,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (1/1) ... [2024-11-21 23:13:47,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 23:13:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:13:47,034 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) [2024-11-21 23:13:47,041 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 [2024-11-21 23:13:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 23:13:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-21 23:13:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-21 23:13:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-21 23:13:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-21 23:13:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 23:13:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 23:13:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 23:13:47,202 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 23:13:47,205 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 23:13:47,391 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-21 23:13:47,391 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 23:13:47,408 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 23:13:47,410 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 23:13:47,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:13:47 BoogieIcfgContainer [2024-11-21 23:13:47,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 23:13:47,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 23:13:47,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 23:13:47,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 23:13:47,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 11:13:46" (1/3) ... [2024-11-21 23:13:47,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4a765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:13:47, skipping insertion in model container [2024-11-21 23:13:47,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:13:46" (2/3) ... [2024-11-21 23:13:47,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4a765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:13:47, skipping insertion in model container [2024-11-21 23:13:47,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:13:47" (3/3) ... [2024-11-21 23:13:47,421 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-21 23:13:47,438 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 23:13:47,438 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 23:13:47,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 23:13:47,508 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;@9a30ec4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 23:13:47,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 23:13:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-21 23:13:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-21 23:13:47,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:47,522 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:47,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:47,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash -791121696, now seen corresponding path program 1 times [2024-11-21 23:13:47,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:47,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662100811] [2024-11-21 23:13:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 23:13:47,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 23:13:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 23:13:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:13:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662100811] [2024-11-21 23:13:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662100811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 23:13:47,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 23:13:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 23:13:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417099200] [2024-11-21 23:13:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 23:13:47,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 23:13:47,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:13:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 23:13:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 23:13:47,772 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-21 23:13:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:13:47,803 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2024-11-21 23:13:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 23:13:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-11-21 23:13:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:13:47,811 INFO L225 Difference]: With dead ends: 74 [2024-11-21 23:13:47,811 INFO L226 Difference]: Without dead ends: 44 [2024-11-21 23:13:47,814 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 [2024-11-21 23:13:47,817 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 23:13:47,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 23:13:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-21 23:13:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2024-11-21 23:13:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-21 23:13:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-21 23:13:47,856 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2024-11-21 23:13:47,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:13:47,856 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-21 23:13:47,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-21 23:13:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-21 23:13:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-21 23:13:47,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:47,859 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:47,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 23:13:47,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:47,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1098789301, now seen corresponding path program 1 times [2024-11-21 23:13:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:47,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228577043] [2024-11-21 23:13:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 23:13:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 23:13:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 23:13:48,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:13:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228577043] [2024-11-21 23:13:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228577043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:13:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501959473] [2024-11-21 23:13:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 23:13:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:13:48,053 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) [2024-11-21 23:13:48,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 23:13:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 23:13:48,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 23:13:48,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:13:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 23:13:48,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:13:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 23:13:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501959473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:13:48,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:13:48,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 23:13:48,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844833823] [2024-11-21 23:13:48,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:13:48,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 23:13:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:13:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 23:13:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 23:13:48,362 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-21 23:13:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:13:48,441 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-21 23:13:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 23:13:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 50 [2024-11-21 23:13:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:13:48,443 INFO L225 Difference]: With dead ends: 73 [2024-11-21 23:13:48,443 INFO L226 Difference]: Without dead ends: 69 [2024-11-21 23:13:48,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 23:13:48,445 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 23:13:48,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 152 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 23:13:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-21 23:13:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-21 23:13:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-21 23:13:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2024-11-21 23:13:48,458 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 50 [2024-11-21 23:13:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:13:48,459 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2024-11-21 23:13:48,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-21 23:13:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2024-11-21 23:13:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-21 23:13:48,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:48,463 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:48,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 23:13:48,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:48,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:48,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1576992628, now seen corresponding path program 2 times [2024-11-21 23:13:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:48,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916760501] [2024-11-21 23:13:48,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 23:13:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:48,722 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 23:13:48,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-21 23:13:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:13:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916760501] [2024-11-21 23:13:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916760501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:13:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216372990] [2024-11-21 23:13:48,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 23:13:48,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:13:48,957 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) [2024-11-21 23:13:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 23:13:49,059 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 23:13:49,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:49,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 23:13:49,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:13:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-21 23:13:49,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:13:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-21 23:13:49,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216372990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:13:49,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:13:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-21 23:13:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140390860] [2024-11-21 23:13:49,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:13:49,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 23:13:49,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:13:49,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 23:13:49,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 23:13:49,401 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-21 23:13:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:13:49,537 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2024-11-21 23:13:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-21 23:13:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 122 [2024-11-21 23:13:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:13:49,540 INFO L225 Difference]: With dead ends: 145 [2024-11-21 23:13:49,541 INFO L226 Difference]: Without dead ends: 141 [2024-11-21 23:13:49,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 23:13:49,542 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 23:13:49,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 165 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 23:13:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-21 23:13:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-21 23:13:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-21 23:13:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2024-11-21 23:13:49,575 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 122 [2024-11-21 23:13:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:13:49,576 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2024-11-21 23:13:49,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-21 23:13:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2024-11-21 23:13:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-21 23:13:49,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:49,582 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:49,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 23:13:49,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-21 23:13:49,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:49,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 605772302, now seen corresponding path program 3 times [2024-11-21 23:13:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:49,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682544992] [2024-11-21 23:13:49,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 23:13:49,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:49,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 23:13:49,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-21 23:13:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:13:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682544992] [2024-11-21 23:13:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682544992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:13:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873346455] [2024-11-21 23:13:50,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 23:13:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:13:50,312 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) [2024-11-21 23:13:50,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 23:13:50,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 23:13:50,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:50,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 23:13:50,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:13:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-21 23:13:50,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:13:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-21 23:13:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873346455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:13:51,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:13:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 23:13:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952122295] [2024-11-21 23:13:51,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:13:51,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 23:13:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:13:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 23:13:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 23:13:51,253 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-21 23:13:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:13:51,525 INFO L93 Difference]: Finished difference Result 289 states and 390 transitions. [2024-11-21 23:13:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 23:13:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 266 [2024-11-21 23:13:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:13:51,529 INFO L225 Difference]: With dead ends: 289 [2024-11-21 23:13:51,529 INFO L226 Difference]: Without dead ends: 285 [2024-11-21 23:13:51,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 23:13:51,531 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 23:13:51,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 260 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 23:13:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-21 23:13:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-21 23:13:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-21 23:13:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 375 transitions. [2024-11-21 23:13:51,559 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 375 transitions. Word has length 266 [2024-11-21 23:13:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:13:51,560 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 375 transitions. [2024-11-21 23:13:51,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-21 23:13:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 375 transitions. [2024-11-21 23:13:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-11-21 23:13:51,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:51,577 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:51,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 23:13:51,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:51,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:51,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -853810926, now seen corresponding path program 4 times [2024-11-21 23:13:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:51,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213469533] [2024-11-21 23:13:51,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 23:13:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:51,850 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 23:13:51,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-21 23:13:53,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:13:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213469533] [2024-11-21 23:13:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213469533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:13:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916943127] [2024-11-21 23:13:53,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 23:13:53,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:53,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:13:53,029 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) [2024-11-21 23:13:53,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 23:13:53,311 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 23:13:53,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:13:53,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 23:13:53,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:13:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-21 23:13:53,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:13:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-21 23:13:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916943127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:13:55,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:13:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-21 23:13:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48467787] [2024-11-21 23:13:55,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:13:55,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-21 23:13:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:13:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-21 23:13:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-21 23:13:55,126 INFO L87 Difference]: Start difference. First operand 285 states and 375 transitions. Second operand has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2024-11-21 23:13:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:13:55,710 INFO L93 Difference]: Finished difference Result 577 states and 786 transitions. [2024-11-21 23:13:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 23:13:55,711 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 554 [2024-11-21 23:13:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:13:55,720 INFO L225 Difference]: With dead ends: 577 [2024-11-21 23:13:55,720 INFO L226 Difference]: Without dead ends: 573 [2024-11-21 23:13:55,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1085 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-21 23:13:55,723 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 23:13:55,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 398 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 23:13:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-21 23:13:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-21 23:13:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-21 23:13:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 759 transitions. [2024-11-21 23:13:55,782 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 759 transitions. Word has length 554 [2024-11-21 23:13:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:13:55,784 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 759 transitions. [2024-11-21 23:13:55,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2024-11-21 23:13:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 759 transitions. [2024-11-21 23:13:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2024-11-21 23:13:55,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:13:55,828 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:13:55,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 23:13:56,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:13:56,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:13:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:13:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -315867366, now seen corresponding path program 5 times [2024-11-21 23:13:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:13:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089760456] [2024-11-21 23:13:56,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 23:13:56,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:13:56,314 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2024-11-21 23:13:56,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:14:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-21 23:14:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:14:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089760456] [2024-11-21 23:14:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089760456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:14:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984993832] [2024-11-21 23:14:00,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 23:14:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:14:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:14:00,320 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) [2024-11-21 23:14:00,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 23:14:00,921 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2024-11-21 23:14:00,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:14:00,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 23:14:00,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:14:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-21 23:14:01,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:14:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-21 23:14:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984993832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:14:05,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:14:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-21 23:14:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864579087] [2024-11-21 23:14:05,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:14:05,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-21 23:14:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:14:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-21 23:14:05,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-21 23:14:05,385 INFO L87 Difference]: Start difference. First operand 573 states and 759 transitions. Second operand has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2024-11-21 23:14:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:14:06,854 INFO L93 Difference]: Finished difference Result 1153 states and 1578 transitions. [2024-11-21 23:14:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 23:14:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1130 [2024-11-21 23:14:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:14:06,864 INFO L225 Difference]: With dead ends: 1153 [2024-11-21 23:14:06,865 INFO L226 Difference]: Without dead ends: 1149 [2024-11-21 23:14:06,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2307 GetRequests, 2213 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-21 23:14:06,868 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 23:14:06,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 709 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 23:14:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-11-21 23:14:06,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2024-11-21 23:14:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 766 states have (on average 1.0013054830287207) internal successors, (767), 766 states have internal predecessors, (767), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-21 23:14:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1527 transitions. [2024-11-21 23:14:06,916 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1527 transitions. Word has length 1130 [2024-11-21 23:14:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:14:06,918 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1527 transitions. [2024-11-21 23:14:06,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2024-11-21 23:14:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1527 transitions. [2024-11-21 23:14:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2283 [2024-11-21 23:14:06,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:14:06,963 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:14:06,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 23:14:07,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:14:07,163 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:14:07,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:14:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1131791574, now seen corresponding path program 6 times [2024-11-21 23:14:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:14:07,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527945949] [2024-11-21 23:14:07,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 23:14:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:14:07,634 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2024-11-21 23:14:07,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:14:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-21 23:14:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 23:14:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527945949] [2024-11-21 23:14:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527945949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 23:14:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355327767] [2024-11-21 23:14:21,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 23:14:21,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:14:21,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 23:14:21,658 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) [2024-11-21 23:14:21,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 23:14:23,283 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2024-11-21 23:14:23,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 23:14:23,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 4826 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-21 23:14:23,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 23:14:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-21 23:14:24,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 23:14:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-21 23:14:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355327767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 23:14:34,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 23:14:35,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-21 23:14:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027267751] [2024-11-21 23:14:35,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 23:14:35,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-21 23:14:35,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 23:14:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-21 23:14:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 23:14:35,023 INFO L87 Difference]: Start difference. First operand 1149 states and 1527 transitions. Second operand has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2024-11-21 23:14:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 23:14:39,922 INFO L93 Difference]: Finished difference Result 2305 states and 3162 transitions. [2024-11-21 23:14:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-21 23:14:39,924 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2282 [2024-11-21 23:14:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 23:14:39,939 INFO L225 Difference]: With dead ends: 2305 [2024-11-21 23:14:39,939 INFO L226 Difference]: Without dead ends: 2301 [2024-11-21 23:14:39,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4659 GetRequests, 4468 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 23:14:39,945 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 23:14:39,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1377 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 23:14:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2024-11-21 23:14:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2301. [2024-11-21 23:14:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 1534 states have (on average 1.0006518904823989) internal successors, (1535), 1534 states have internal predecessors, (1535), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2024-11-21 23:14:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3063 transitions. [2024-11-21 23:14:40,028 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3063 transitions. Word has length 2282 [2024-11-21 23:14:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 23:14:40,034 INFO L471 AbstractCegarLoop]: Abstraction has 2301 states and 3063 transitions. [2024-11-21 23:14:40,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2024-11-21 23:14:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3063 transitions. [2024-11-21 23:14:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4587 [2024-11-21 23:14:40,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 23:14:40,149 INFO L215 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 23:14:40,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 23:14:40,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 23:14:40,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 23:14:40,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 23:14:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1346057034, now seen corresponding path program 7 times [2024-11-21 23:14:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 23:14:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443738327] [2024-11-21 23:14:40,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 23:14:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 23:14:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat