./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.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 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:09:16,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:09:16,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:09:16,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:09:16,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:09:16,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:09:16,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:09:16,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:09:16,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:09:16,218 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:09:16,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:09:16,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:09:16,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:09:16,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:09:16,223 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:09:16,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:09:16,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:09:16,224 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:09:16,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:09:16,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:09:16,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:09:16,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:09:16,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:09:16,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:09:16,230 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:09:16,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:09:16,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:09:16,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:09:16,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:09:16,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:09:16,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:09:16,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:09:16,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:16,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:09:16,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:09:16,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:09:16,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:09:16,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:09:16,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:09:16,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:09:16,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:09:16,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:09:16,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 [2024-11-22 02:09:16,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:09:16,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:09:16,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:09:16,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:09:16,531 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:09:16,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2024-11-22 02:09:17,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:09:18,121 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:09:18,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2024-11-22 02:09:18,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656d36990/5b3a7ab5e9c44fa1ac45e2a7b5c819c8/FLAG03fd1a04e [2024-11-22 02:09:18,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656d36990/5b3a7ab5e9c44fa1ac45e2a7b5c819c8 [2024-11-22 02:09:18,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:09:18,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:09:18,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:18,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:09:18,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:09:18,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610b646d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18, skipping insertion in model container [2024-11-22 02:09:18,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,171 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:09:18,355 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_2calls_2-2.c[946,959] [2024-11-22 02:09:18,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:18,369 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:09:18,383 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_2calls_2-2.c[946,959] [2024-11-22 02:09:18,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:18,399 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:09:18,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18 WrapperNode [2024-11-22 02:09:18,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:18,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:18,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:09:18,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:09:18,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,427 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:09:18,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:18,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:09:18,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:09:18,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:09:18,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,452 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:09:18,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:09:18,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:09:18,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:09:18,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:09:18,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (1/1) ... [2024-11-22 02:09:18,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:18,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:18,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:09:18,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:09:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:09:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:09:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:09:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:09:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:09:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:09:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:09:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:09:18,613 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:09:18,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:09:18,763 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:09:18,763 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:09:18,780 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:09:18,781 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:09:18,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:18 BoogieIcfgContainer [2024-11-22 02:09:18,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:09:18,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:09:18,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:09:18,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:09:18,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:09:18" (1/3) ... [2024-11-22 02:09:18,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073fa99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:18, skipping insertion in model container [2024-11-22 02:09:18,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:18" (2/3) ... [2024-11-22 02:09:18,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073fa99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:18, skipping insertion in model container [2024-11-22 02:09:18,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:18" (3/3) ... [2024-11-22 02:09:18,791 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2024-11-22 02:09:18,811 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:09:18,811 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:09:18,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:09:18,887 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;@57900f68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:09:18,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:09:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:09:18,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:18,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:18,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:18,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:09:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195151477] [2024-11-22 02:09:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:09:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195151477] [2024-11-22 02:09:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195151477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548245330] [2024-11-22 02:09:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:19,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:19,213 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-11-22 02:09:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:19,337 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-22 02:09:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:19,340 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 [2024-11-22 02:09:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:19,347 INFO L225 Difference]: With dead ends: 39 [2024-11-22 02:09:19,347 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:09:19,349 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 [2024-11-22 02:09:19,353 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:19,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:09:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-22 02:09:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:19,406 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:09:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:19,410 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:19,410 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) [2024-11-22 02:09:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:09:19,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:19,412 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:19,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:09:19,413 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:19,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:09:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009510425] [2024-11-22 02:09:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:19,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:19,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009510425] [2024-11-22 02:09:19,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009510425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822671525] [2024-11-22 02:09:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:19,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:19,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:19,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:09:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:19,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:19,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:19,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:20,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822671525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:20,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:20,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-22 02:09:20,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127902374] [2024-11-22 02:09:20,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:20,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 02:09:20,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 02:09:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:09:20,147 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 02:09:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:20,428 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2024-11-22 02:09:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) Word has length 23 [2024-11-22 02:09:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:20,431 INFO L225 Difference]: With dead ends: 49 [2024-11-22 02:09:20,431 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 02:09:20,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:09:20,434 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 32 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:20,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 147 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 02:09:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-22 02:09:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-22 02:09:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2024-11-22 02:09:20,460 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 23 [2024-11-22 02:09:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:20,461 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2024-11-22 02:09:20,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 02:09:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2024-11-22 02:09:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:09:20,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:20,465 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:20,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:09:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:20,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:20,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:09:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396795087] [2024-11-22 02:09:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:09:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396795087] [2024-11-22 02:09:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396795087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469063971] [2024-11-22 02:09:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:20,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:20,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:09:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:20,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 02:09:20,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:09:20,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:09:20,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469063971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:20,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-22 02:09:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43679842] [2024-11-22 02:09:20,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:20,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:21,000 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 02:09:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:21,069 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2024-11-22 02:09:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-11-22 02:09:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:21,071 INFO L225 Difference]: With dead ends: 57 [2024-11-22 02:09:21,071 INFO L226 Difference]: Without dead ends: 53 [2024-11-22 02:09:21,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:21,073 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:21,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 314 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-22 02:09:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-22 02:09:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 02:09:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2024-11-22 02:09:21,092 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 24 [2024-11-22 02:09:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:21,092 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2024-11-22 02:09:21,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 02:09:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2024-11-22 02:09:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 02:09:21,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:21,096 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:21,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:09:21,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 02:09:21,300 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:21,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 988182601, now seen corresponding path program 1 times [2024-11-22 02:09:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112210647] [2024-11-22 02:09:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:21,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:21,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112210647] [2024-11-22 02:09:21,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112210647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:21,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:21,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:09:21,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291020599] [2024-11-22 02:09:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:21,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:09:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:09:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:09:21,389 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:09:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:21,504 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2024-11-22 02:09:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-22 02:09:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:21,506 INFO L225 Difference]: With dead ends: 59 [2024-11-22 02:09:21,506 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 02:09:21,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:09:21,508 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:21,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 101 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 02:09:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2024-11-22 02:09:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 02:09:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2024-11-22 02:09:21,520 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 25 [2024-11-22 02:09:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:21,520 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2024-11-22 02:09:21,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:09:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2024-11-22 02:09:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:09:21,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:21,522 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:09:21,522 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:21,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:09:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125996637] [2024-11-22 02:09:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:09:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:21,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125996637] [2024-11-22 02:09:21,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125996637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:21,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681625536] [2024-11-22 02:09:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:21,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:21,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:09:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:21,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 02:09:21,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:09:21,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:09:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681625536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:22,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2024-11-22 02:09:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390471938] [2024-11-22 02:09:22,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:22,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:22,216 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 18 states, 16 states have (on average 2.5) internal successors, (40), 18 states have internal predecessors, (40), 9 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-22 02:09:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:22,364 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2024-11-22 02:09:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:22,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 18 states have internal predecessors, (40), 9 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) Word has length 36 [2024-11-22 02:09:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:22,365 INFO L225 Difference]: With dead ends: 52 [2024-11-22 02:09:22,365 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 02:09:22,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:09:22,369 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:22,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 153 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 02:09:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 02:09:22,370 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) [2024-11-22 02:09:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 02:09:22,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2024-11-22 02:09:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:22,370 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 02:09:22,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 18 states have internal predecessors, (40), 9 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-22 02:09:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 02:09:22,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 02:09:22,375 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:09:22,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:22,579 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 [2024-11-22 02:09:22,583 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 02:09:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 02:09:22,835 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:09:22,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:09:22 BoogieIcfgContainer [2024-11-22 02:09:22,861 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:09:22,861 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:09:22,861 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:09:22,862 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:09:22,862 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:18" (3/4) ... [2024-11-22 02:09:22,865 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 02:09:22,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-22 02:09:22,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-22 02:09:22,873 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 02:09:22,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 02:09:22,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 02:09:22,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 02:09:22,957 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:09:22,957 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 02:09:22,957 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:09:22,958 INFO L158 Benchmark]: Toolchain (without parser) took 4817.23ms. Allocated memory was 176.2MB in the beginning and 245.4MB in the end (delta: 69.2MB). Free memory was 118.8MB in the beginning and 117.4MB in the end (delta: 1.4MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,958 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:09:22,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.92ms. Allocated memory is still 176.2MB. Free memory was 118.8MB in the beginning and 106.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.92ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 105.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,959 INFO L158 Benchmark]: Boogie Preprocessor took 32.55ms. Allocated memory is still 176.2MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,959 INFO L158 Benchmark]: RCFGBuilder took 319.59ms. Allocated memory is still 176.2MB. Free memory was 103.5MB in the beginning and 92.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,959 INFO L158 Benchmark]: TraceAbstraction took 4076.69ms. Allocated memory was 176.2MB in the beginning and 245.4MB in the end (delta: 69.2MB). Free memory was 92.0MB in the beginning and 122.6MB in the end (delta: -30.6MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,960 INFO L158 Benchmark]: Witness Printer took 96.20ms. Allocated memory is still 245.4MB. Free memory was 122.6MB in the beginning and 117.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 02:09:22,963 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.92ms. Allocated memory is still 176.2MB. Free memory was 118.8MB in the beginning and 106.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.92ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 105.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.55ms. Allocated memory is still 176.2MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.59ms. Allocated memory is still 176.2MB. Free memory was 103.5MB in the beginning and 92.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4076.69ms. Allocated memory was 176.2MB in the beginning and 245.4MB in the end (delta: 69.2MB). Free memory was 92.0MB in the beginning and 122.6MB in the end (delta: -30.6MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Witness Printer took 96.20ms. Allocated memory is still 245.4MB. Free memory was 122.6MB in the beginning and 117.4MB in the end (delta: 5.2MB). 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: 41]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 669 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 540 IncrementalHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 139 mSDtfsCounter, 540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 41, 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, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 707 SizeOfPredicates, 3 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 47/77 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: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((\result == 0) || (0 < n)) && (((\result == 1) || ((\result == 0) && (n <= 0))) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((2 != n) || (\result == 1)) RESULT: Ultimate proved your program to be correct! [2024-11-22 02:09:22,981 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