./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:03:41,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:03:42,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:03:42,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:03:42,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:03:42,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:03:42,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:03:42,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:03:42,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:03:42,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:03:42,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:03:42,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:03:42,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:03:42,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:03:42,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:03:42,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:03:42,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:03:42,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:03:42,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:03:42,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:03:42,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:03:42,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:03:42,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:03:42,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:03:42,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:03:42,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:03:42,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:03:42,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:03:42,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:03:42,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:03:42,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:03:42,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:03:42,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:03:42,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:03:42,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:03:42,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:03:42,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:03:42,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:03:42,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:03:42,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:03:42,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:03:42,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:03:42,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 [2024-11-22 01:03:42,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:03:42,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:03:42,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:03:42,375 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:03:42,375 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:03:42,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2024-11-22 01:03:43,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:03:43,974 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:03:43,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2024-11-22 01:03:43,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102ec17a6/65731f5befcf42708ab3baf932ae3eee/FLAGa270f7239 [2024-11-22 01:03:43,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102ec17a6/65731f5befcf42708ab3baf932ae3eee [2024-11-22 01:03:43,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:03:43,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:03:44,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:03:44,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:03:44,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:03:44,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:43" (1/1) ... [2024-11-22 01:03:44,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42500f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44, skipping insertion in model container [2024-11-22 01:03:44,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:43" (1/1) ... [2024-11-22 01:03:44,024 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:03:44,189 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/loop-lit/mine2017-ex4.6.i[812,825] [2024-11-22 01:03:44,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:03:44,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:03:44,226 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/loop-lit/mine2017-ex4.6.i[812,825] [2024-11-22 01:03:44,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:03:44,246 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:03:44,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44 WrapperNode [2024-11-22 01:03:44,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:03:44,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:03:44,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:03:44,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:03:44,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,279 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-22 01:03:44,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:03:44,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:03:44,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:03:44,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:03:44,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,307 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 01:03:44,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:03:44,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:03:44,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:03:44,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:03:44,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (1/1) ... [2024-11-22 01:03:44,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:03:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:44,359 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 01:03:44,366 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 01:03:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:03:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:03:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:03:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:03:44,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:03:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:03:44,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:03:44,472 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:03:44,555 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-22 01:03:44,555 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:03:44,566 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:03:44,566 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:03:44,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:44 BoogieIcfgContainer [2024-11-22 01:03:44,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:03:44,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:03:44,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:03:44,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:03:44,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:43" (1/3) ... [2024-11-22 01:03:44,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe16ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:44, skipping insertion in model container [2024-11-22 01:03:44,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:44" (2/3) ... [2024-11-22 01:03:44,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe16ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:44, skipping insertion in model container [2024-11-22 01:03:44,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:44" (3/3) ... [2024-11-22 01:03:44,577 INFO L112 eAbstractionObserver]: Analyzing ICFG mine2017-ex4.6.i [2024-11-22 01:03:44,594 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:03:44,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:03:44,667 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:03:44,677 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;@80bd1f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:03:44,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:03:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-11-22 01:03:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 01:03:44,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:44,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:44,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:44,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:44,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1815999968, now seen corresponding path program 1 times [2024-11-22 01:03:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30795581] [2024-11-22 01:03:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:44,863 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 01:03:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30795581] [2024-11-22 01:03:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30795581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:03:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895309336] [2024-11-22 01:03:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:44,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:03:44,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:03:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:03:44,900 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:44,914 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2024-11-22 01:03:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:03:44,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 01:03:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:44,921 INFO L225 Difference]: With dead ends: 32 [2024-11-22 01:03:44,921 INFO L226 Difference]: Without dead ends: 13 [2024-11-22 01:03:44,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:03:44,926 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:44,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-22 01:03:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-22 01:03:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 10 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:03:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-22 01:03:44,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-11-22 01:03:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:44,956 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-22 01:03:44,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-22 01:03:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 01:03:44,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:44,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:44,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:03:44,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:44,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1809535321, now seen corresponding path program 1 times [2024-11-22 01:03:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:44,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109107013] [2024-11-22 01:03:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:45,035 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 01:03:45,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:45,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109107013] [2024-11-22 01:03:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109107013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:45,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:03:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144709726] [2024-11-22 01:03:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:45,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:03:45,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:03:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:03:45,047 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:45,065 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-22 01:03:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:03:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 01:03:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:45,067 INFO L225 Difference]: With dead ends: 23 [2024-11-22 01:03:45,067 INFO L226 Difference]: Without dead ends: 16 [2024-11-22 01:03:45,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:03:45,071 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:45,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-22 01:03:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-11-22 01:03:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:03:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-22 01:03:45,080 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2024-11-22 01:03:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:45,081 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-22 01:03:45,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-22 01:03:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 01:03:45,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:45,082 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:45,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:03:45,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:45,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1811263199, now seen corresponding path program 1 times [2024-11-22 01:03:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:45,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271691302] [2024-11-22 01:03:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:45,233 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 01:03:45,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271691302] [2024-11-22 01:03:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271691302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:45,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:45,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:03:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053807712] [2024-11-22 01:03:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:45,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:03:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:03:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:03:45,241 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:45,310 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-22 01:03:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:03:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 01:03:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:45,312 INFO L225 Difference]: With dead ends: 20 [2024-11-22 01:03:45,312 INFO L226 Difference]: Without dead ends: 18 [2024-11-22 01:03:45,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:03:45,313 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:45,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-22 01:03:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-22 01:03:45,319 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), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:03:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-22 01:03:45,320 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2024-11-22 01:03:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:45,320 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-22 01:03:45,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-22 01:03:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 01:03:45,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:45,321 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:45,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:03:45,322 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:45,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1116775810, now seen corresponding path program 1 times [2024-11-22 01:03:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:45,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087194481] [2024-11-22 01:03:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:45,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:45,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087194481] [2024-11-22 01:03:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087194481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:45,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:03:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887949184] [2024-11-22 01:03:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:45,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:03:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:03:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:03:45,463 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:03:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:45,528 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-22 01:03:45,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:03:45,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-22 01:03:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:45,529 INFO L225 Difference]: With dead ends: 35 [2024-11-22 01:03:45,530 INFO L226 Difference]: Without dead ends: 28 [2024-11-22 01:03:45,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:03:45,534 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:45,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-22 01:03:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-22 01:03:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:03:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-22 01:03:45,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 13 [2024-11-22 01:03:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:45,543 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-22 01:03:45,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:03:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-22 01:03:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 01:03:45,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:45,545 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 01:03:45,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:03:45,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:45,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2121583354, now seen corresponding path program 1 times [2024-11-22 01:03:45,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905592609] [2024-11-22 01:03:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:45,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:03:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905592609] [2024-11-22 01:03:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905592609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866509030] [2024-11-22 01:03:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:45,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:45,701 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 01:03:45,702 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 01:03:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:45,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 01:03:45,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:03:45,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:03:45,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866509030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:45,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:45,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 01:03:45,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764795991] [2024-11-22 01:03:45,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:45,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:03:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:03:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:03:45,973 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 01:03:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:46,073 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-11-22 01:03:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:03:46,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2024-11-22 01:03:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:46,076 INFO L225 Difference]: With dead ends: 49 [2024-11-22 01:03:46,076 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 01:03:46,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:03:46,079 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:46,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:03:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 01:03:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-22 01:03:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 01:03:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-22 01:03:46,098 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2024-11-22 01:03:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:46,098 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-22 01:03:46,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 01:03:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-22 01:03:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 01:03:46,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:46,101 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:46,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 01:03:46,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:46,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:46,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1195524293, now seen corresponding path program 1 times [2024-11-22 01:03:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:46,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59246407] [2024-11-22 01:03:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-22 01:03:46,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59246407] [2024-11-22 01:03:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59246407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:46,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:46,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:03:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108785350] [2024-11-22 01:03:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:46,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:03:46,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:03:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:03:46,437 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 01:03:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:46,462 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-22 01:03:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:03:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2024-11-22 01:03:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:46,463 INFO L225 Difference]: With dead ends: 40 [2024-11-22 01:03:46,464 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:03:46,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:03:46,465 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:46,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:03:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:03:46,466 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 01:03:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:03:46,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2024-11-22 01:03:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:46,467 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:03:46,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 01:03:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:03:46,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:03:46,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:03:46,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 01:03:46,473 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-22 01:03:46,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:03:46,588 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:03:46,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:46 BoogieIcfgContainer [2024-11-22 01:03:46,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:03:46,611 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:03:46,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:03:46,612 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:03:46,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:44" (3/4) ... [2024-11-22 01:03:46,614 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:03:46,617 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-22 01:03:46,620 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-22 01:03:46,620 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:03:46,620 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:03:46,621 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:03:46,705 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:03:46,705 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:03:46,706 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:03:46,706 INFO L158 Benchmark]: Toolchain (without parser) took 2708.00ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 95.0MB in the beginning and 73.3MB in the end (delta: 21.7MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,706 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:03:46,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.98ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 82.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.47ms. Allocated memory is still 148.9MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,707 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 148.9MB. Free memory was 81.0MB in the beginning and 79.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,707 INFO L158 Benchmark]: RCFGBuilder took 244.24ms. Allocated memory is still 148.9MB. Free memory was 79.3MB in the beginning and 69.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,708 INFO L158 Benchmark]: TraceAbstraction took 2041.26ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 69.5MB in the beginning and 77.5MB in the end (delta: -8.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,708 INFO L158 Benchmark]: Witness Printer took 94.54ms. Allocated memory is still 205.5MB. Free memory was 77.5MB in the beginning and 73.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:03:46,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.98ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 82.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.47ms. Allocated memory is still 148.9MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 148.9MB. Free memory was 81.0MB in the beginning and 79.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 244.24ms. Allocated memory is still 148.9MB. Free memory was 79.3MB in the beginning and 69.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2041.26ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 69.5MB in the beginning and 77.5MB in the end (delta: -8.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 94.54ms. Allocated memory is still 205.5MB. Free memory was 77.5MB in the beginning and 73.3MB 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: 13]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 79 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 31, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 1 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 301/313 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((0 <= x) && (x <= 40)) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-22 01:03:46,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE