./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_5-1.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 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:25:19,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:25:19,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:25:19,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:25:19,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:25:19,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:25:19,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:25:19,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:25:19,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:25:19,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:25:19,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:25:19,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:25:19,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:25:19,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:25:19,407 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:25:19,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:25:19,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:25:19,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:25:19,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:25:19,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:25:19,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:25:19,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:25:19,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:25:19,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:25:19,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:25:19,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:25:19,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:25:19,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:25:19,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:25:19,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:25:19,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:25:19,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:25:19,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:19,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:25:19,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:25:19,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:25:19,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:25:19,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:25:19,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:25:19,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:25:19,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:25:19,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:25:19,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2024-11-18 14:25:19,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:25:19,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:25:19,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:25:19,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:25:19,644 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:25:19,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-18 14:25:20,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:25:21,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:25:21,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-18 14:25:21,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cbcaba36/33f178c8a4e040caa274a705f8406625/FLAGad1cf1732 [2024-11-18 14:25:21,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cbcaba36/33f178c8a4e040caa274a705f8406625 [2024-11-18 14:25:21,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:25:21,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:25:21,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:21,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:25:21,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:25:21,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4c00aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21, skipping insertion in model container [2024-11-18 14:25:21,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:25:21,231 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/recursive-simple/fibo_5-1.c[740,753] [2024-11-18 14:25:21,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:21,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:25:21,252 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/recursive-simple/fibo_5-1.c[740,753] [2024-11-18 14:25:21,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:21,264 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:25:21,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21 WrapperNode [2024-11-18 14:25:21,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:21,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:21,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:25:21,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:25:21,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,288 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:25:21,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:21,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:25:21,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:25:21,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:25:21,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,304 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:25:21,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:25:21,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:25:21,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:25:21,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:25:21,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (1/1) ... [2024-11-18 14:25:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:21,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:25:21,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:25:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:25:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:25:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:25:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:25:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-18 14:25:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-18 14:25:21,440 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:25:21,442 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:25:21,551 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-18 14:25:21,552 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:25:21,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:25:21,563 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:25:21,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:21 BoogieIcfgContainer [2024-11-18 14:25:21,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:25:21,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:25:21,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:25:21,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:25:21,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:25:21" (1/3) ... [2024-11-18 14:25:21,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab5af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:21, skipping insertion in model container [2024-11-18 14:25:21,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:21" (2/3) ... [2024-11-18 14:25:21,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab5af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:21, skipping insertion in model container [2024-11-18 14:25:21,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:21" (3/3) ... [2024-11-18 14:25:21,573 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-11-18 14:25:21,586 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:25:21,586 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:25:21,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:25:21,649 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;@67e53385, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:25:21,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:25:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:25:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:25:21,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:21,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:21,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:21,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-11-18 14:25:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759793756] [2024-11-18 14:25:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:21,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:21,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759793756] [2024-11-18 14:25:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759793756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:21,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:21,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619906210] [2024-11-18 14:25:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:21,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:21,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:21,879 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:21,949 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-18 14:25:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-18 14:25:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:21,966 INFO L225 Difference]: With dead ends: 32 [2024-11-18 14:25:21,966 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:25:21,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:21,971 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:21,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:25:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 14:25:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:25:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:25:21,998 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-18 14:25:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:21,998 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:25:21,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:25:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:25:21,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:21,999 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:21,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:25:21,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:22,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-11-18 14:25:22,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:22,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162775178] [2024-11-18 14:25:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162775178] [2024-11-18 14:25:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162775178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725989390] [2024-11-18 14:25:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:22,085 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:22,127 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-18 14:25:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-18 14:25:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:22,129 INFO L225 Difference]: With dead ends: 24 [2024-11-18 14:25:22,129 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:25:22,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:22,130 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:22,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:25:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:25:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 14:25:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:25:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:25:22,138 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-18 14:25:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:22,139 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:25:22,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:25:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:25:22,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:22,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:22,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:25:22,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-11-18 14:25:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855417185] [2024-11-18 14:25:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855417185] [2024-11-18 14:25:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855417185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348078771] [2024-11-18 14:25:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:22,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:22,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:25:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:22,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:22,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:22,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:25:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348078771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:22,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:22,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-18 14:25:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036367633] [2024-11-18 14:25:22,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:22,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:25:22,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:25:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:25:22,603 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:25:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:22,693 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-18 14:25:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:25:22,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-18 14:25:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:22,695 INFO L225 Difference]: With dead ends: 35 [2024-11-18 14:25:22,695 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:25:22,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:25:22,696 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:22,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:25:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-18 14:25:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:25:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-18 14:25:22,704 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-18 14:25:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:22,705 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-18 14:25:22,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:25:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-18 14:25:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:25:22,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:22,706 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:22,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:25:22,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:22,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:22,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-11-18 14:25:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:22,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727769360] [2024-11-18 14:25:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:22,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:25:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727769360] [2024-11-18 14:25:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727769360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535884326] [2024-11-18 14:25:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:23,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:23,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:25:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:23,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:23,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:25:23,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:25:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535884326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:23,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-18 14:25:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87214376] [2024-11-18 14:25:23,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:23,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:25:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:25:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:25:23,217 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:25:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:23,272 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-18 14:25:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:25:23,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-18 14:25:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:23,273 INFO L225 Difference]: With dead ends: 29 [2024-11-18 14:25:23,274 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 14:25:23,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:25:23,274 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:23,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:25:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 14:25:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 14:25:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:25:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-18 14:25:23,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-18 14:25:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:23,280 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-18 14:25:23,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:25:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-18 14:25:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:25:23,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:23,281 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:23,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:25:23,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 14:25:23,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:23,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-11-18 14:25:23,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:23,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599954340] [2024-11-18 14:25:23,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:23,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:23,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:23,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:25:23,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599954340] [2024-11-18 14:25:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599954340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674159123] [2024-11-18 14:25:23,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:23,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:23,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:23,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:25:23,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:23,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:23,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:23,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:25:23,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:25:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674159123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:23,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:23,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2024-11-18 14:25:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332076636] [2024-11-18 14:25:23,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:23,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:25:23,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:24,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:25:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:25:24,000 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:25:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:24,198 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2024-11-18 14:25:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:25:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-18 14:25:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:24,199 INFO L225 Difference]: With dead ends: 60 [2024-11-18 14:25:24,200 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 14:25:24,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:25:24,201 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:24,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 14:25:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-18 14:25:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-18 14:25:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-18 14:25:24,212 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2024-11-18 14:25:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:24,212 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-18 14:25:24,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:25:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-18 14:25:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:25:24,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:24,214 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:24,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:25:24,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:24,415 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:24,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2024-11-18 14:25:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465675580] [2024-11-18 14:25:24,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:24,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 14:25:24,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-18 14:25:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465675580] [2024-11-18 14:25:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465675580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365322297] [2024-11-18 14:25:24,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:24,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:24,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:24,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:24,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:25:24,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 14:25:24,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:24,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:24,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-18 14:25:24,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-18 14:25:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365322297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:24,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2024-11-18 14:25:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858380545] [2024-11-18 14:25:24,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:24,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:25:24,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:25:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:25:24,937 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:25:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:25,018 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2024-11-18 14:25:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:25:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-18 14:25:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:25,020 INFO L225 Difference]: With dead ends: 72 [2024-11-18 14:25:25,020 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 14:25:25,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:25:25,022 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:25,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 14:25:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 14:25:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-18 14:25:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-18 14:25:25,028 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 93 [2024-11-18 14:25:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:25,029 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-18 14:25:25,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:25:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-18 14:25:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:25:25,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:25,031 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:25,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:25:25,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:25,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:25,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 4 times [2024-11-18 14:25:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13711804] [2024-11-18 14:25:25,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:25,243 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:25,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-18 14:25:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13711804] [2024-11-18 14:25:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13711804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349643535] [2024-11-18 14:25:25,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:25,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:25,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:25,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:25,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:25:25,359 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:25,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:25,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:25,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-18 14:25:25,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 142 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-18 14:25:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349643535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:25,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 12 [2024-11-18 14:25:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835629002] [2024-11-18 14:25:25,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:25,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 14:25:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 14:25:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:25:25,806 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-18 14:25:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:25,871 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-18 14:25:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:25:25,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) Word has length 79 [2024-11-18 14:25:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:25,873 INFO L225 Difference]: With dead ends: 49 [2024-11-18 14:25:25,873 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 14:25:25,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:25,874 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:25,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 58 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:25:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 14:25:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-18 14:25:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.09375) internal successors, (35), 30 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-18 14:25:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-18 14:25:25,885 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 79 [2024-11-18 14:25:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:25,886 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-18 14:25:25,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-18 14:25:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-18 14:25:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:25:25,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:25,890 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 19, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:25,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:26,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:26,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:26,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1279375831, now seen corresponding path program 5 times [2024-11-18 14:25:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864023219] [2024-11-18 14:25:26,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:26,108 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 14:25:26,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 322 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-11-18 14:25:26,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:26,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864023219] [2024-11-18 14:25:26,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864023219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:26,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316124470] [2024-11-18 14:25:26,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:26,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:26,210 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) [2024-11-18 14:25:26,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:25:26,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 14:25:26,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:26,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 822 proven. 67 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-18 14:25:26,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 325 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-18 14:25:26,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316124470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:26,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:26,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-18 14:25:26,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56519838] [2024-11-18 14:25:26,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:26,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:25:26,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:26,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:25:26,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:25:26,847 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-18 14:25:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:27,038 INFO L93 Difference]: Finished difference Result 98 states and 136 transitions. [2024-11-18 14:25:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:25:27,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 161 [2024-11-18 14:25:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:27,040 INFO L225 Difference]: With dead ends: 98 [2024-11-18 14:25:27,040 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 14:25:27,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 315 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:25:27,043 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:27,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 74 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 14:25:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-18 14:25:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.135135135135135) internal successors, (42), 34 states have internal predecessors, (42), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-18 14:25:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-18 14:25:27,054 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 161 [2024-11-18 14:25:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:27,055 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-18 14:25:27,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-18 14:25:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-18 14:25:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:25:27,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:27,058 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:27,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:27,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:27,259 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:27,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:27,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1447005449, now seen corresponding path program 6 times [2024-11-18 14:25:27,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:27,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343786886] [2024-11-18 14:25:27,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:27,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:27,281 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 14:25:27,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 281 proven. 54 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-18 14:25:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343786886] [2024-11-18 14:25:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343786886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:27,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162753604] [2024-11-18 14:25:27,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:27,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:27,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:27,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:27,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:25:27,514 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 14:25:27,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:27,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:27,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 259 proven. 56 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-18 14:25:27,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 259 proven. 73 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-18 14:25:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162753604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:28,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 15 [2024-11-18 14:25:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668864055] [2024-11-18 14:25:28,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:28,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:25:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:25:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:28,042 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-18 14:25:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:28,149 INFO L93 Difference]: Finished difference Result 118 states and 170 transitions. [2024-11-18 14:25:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:25:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 133 [2024-11-18 14:25:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:28,151 INFO L225 Difference]: With dead ends: 118 [2024-11-18 14:25:28,151 INFO L226 Difference]: Without dead ends: 52 [2024-11-18 14:25:28,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:28,152 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:28,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 91 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-18 14:25:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-18 14:25:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-18 14:25:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-18 14:25:28,158 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 133 [2024-11-18 14:25:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:28,158 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-18 14:25:28,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-18 14:25:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-18 14:25:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 14:25:28,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:28,161 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:28,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:28,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:28,362 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:28,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash -292645265, now seen corresponding path program 7 times [2024-11-18 14:25:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465379417] [2024-11-18 14:25:28,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-18 14:25:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465379417] [2024-11-18 14:25:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465379417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275897673] [2024-11-18 14:25:28,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:28,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:28,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:28,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:25:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:28,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-18 14:25:28,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-18 14:25:28,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-18 14:25:29,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275897673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:29,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:29,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-11-18 14:25:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020001259] [2024-11-18 14:25:29,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:29,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:25:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:25:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:25:29,279 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:25:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:29,374 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-18 14:25:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:25:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) Word has length 106 [2024-11-18 14:25:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:29,376 INFO L225 Difference]: With dead ends: 60 [2024-11-18 14:25:29,376 INFO L226 Difference]: Without dead ends: 56 [2024-11-18 14:25:29,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:25:29,377 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:29,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 395 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-18 14:25:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2024-11-18 14:25:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-18 14:25:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-11-18 14:25:29,382 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 106 [2024-11-18 14:25:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:29,382 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-11-18 14:25:29,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:25:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-11-18 14:25:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:25:29,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:29,384 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:29,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:25:29,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:25:29,585 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:29,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1926690636, now seen corresponding path program 8 times [2024-11-18 14:25:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:29,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450549777] [2024-11-18 14:25:29,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:29,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:29,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 156 proven. 235 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2024-11-18 14:25:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450549777] [2024-11-18 14:25:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450549777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692012959] [2024-11-18 14:25:29,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:29,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:29,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:29,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:29,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:25:29,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:29,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:29,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:29,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 143 proven. 358 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2024-11-18 14:25:29,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 143 proven. 393 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-11-18 14:25:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692012959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:30,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 19 [2024-11-18 14:25:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172587829] [2024-11-18 14:25:30,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:30,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:25:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:25:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:30,782 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 14 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-18 14:25:30,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:30,881 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-18 14:25:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:25:30,882 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 14 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) Word has length 147 [2024-11-18 14:25:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:30,882 INFO L225 Difference]: With dead ends: 57 [2024-11-18 14:25:30,882 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 14:25:30,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 281 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:25:30,883 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:30,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 99 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 14:25:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 14:25:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:25:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 14:25:30,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2024-11-18 14:25:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:30,885 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 14:25:30,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 14 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-18 14:25:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 14:25:30,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 14:25:30,887 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 14:25:30,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:31,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:31,094 INFO L407 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2024-11-18 14:25:31,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 14:25:31,637 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 14:25:31,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:25:31 BoogieIcfgContainer [2024-11-18 14:25:31,655 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 14:25:31,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 14:25:31,656 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 14:25:31,656 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 14:25:31,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:21" (3/4) ... [2024-11-18 14:25:31,658 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 14:25:31,661 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-18 14:25:31,663 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 14:25:31,663 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 14:25:31,663 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 14:25:31,663 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 14:25:31,720 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 14:25:31,721 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 14:25:31,721 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 14:25:31,721 INFO L158 Benchmark]: Toolchain (without parser) took 10647.64ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 114.6MB in the beginning and 192.1MB in the end (delta: -77.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:25:31,721 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:25:31,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.63ms. Allocated memory is still 172.0MB. Free memory was 114.6MB in the beginning and 102.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 14:25:31,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.16ms. Allocated memory is still 172.0MB. Free memory was 102.5MB in the beginning and 101.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 14:25:31,722 INFO L158 Benchmark]: Boogie Preprocessor took 25.21ms. Allocated memory is still 172.0MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:25:31,723 INFO L158 Benchmark]: RCFGBuilder took 248.60ms. Allocated memory is still 172.0MB. Free memory was 99.4MB in the beginning and 89.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 14:25:31,723 INFO L158 Benchmark]: TraceAbstraction took 10089.15ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 88.4MB in the beginning and 196.3MB in the end (delta: -107.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2024-11-18 14:25:31,725 INFO L158 Benchmark]: Witness Printer took 65.40ms. Allocated memory is still 243.3MB. Free memory was 196.3MB in the beginning and 192.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 14:25:31,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.63ms. Allocated memory is still 172.0MB. Free memory was 114.6MB in the beginning and 102.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.16ms. Allocated memory is still 172.0MB. Free memory was 102.5MB in the beginning and 101.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.21ms. Allocated memory is still 172.0MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.60ms. Allocated memory is still 172.0MB. Free memory was 99.4MB in the beginning and 89.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10089.15ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 88.4MB in the beginning and 196.3MB in the end (delta: -107.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. * Witness Printer took 65.40ms. Allocated memory is still 243.3MB. Free memory was 196.3MB in the beginning and 192.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 11, TraceHistogramMax: 23, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 1078 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1091 IncrementalHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 204 mSDtfsCounter, 1091 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1757 GetRequests, 1568 SyntacticMatches, 33 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=10, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1627 NumberOfCodeBlocks, 1397 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 2401 ConstructedInterpolants, 0 QuantifiedInterpolants, 4303 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1653 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 11593/14571 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: (((((((((\result == 3) && (4 == n)) || ((\result == 1) && (n <= 2))) || (n < 1)) || ((3 == n) && (\result == 2))) || (5 < n)) || ((\result == 1) && (1 == n))) || ((\result == 5) && (5 == n))) && ((0 < n) || (\result == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-18 14:25:31,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE