./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/nec20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/nec20.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f0c1b7bb29025bb3cfe44532e03db36f6e9424224df9a32b2b480eba846c2cfe --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:53:26,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:53:26,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:53:26,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:53:26,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:53:26,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:53:26,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:53:26,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:53:26,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:53:26,507 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:53:26,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:53:26,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:53:26,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:53:26,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:53:26,509 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:53:26,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:53:26,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:53:26,509 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:53:26,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:53:26,510 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:53:26,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:53:26,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:53:26,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:53:26,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:53:26,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:53:26,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:53:26,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:53:26,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:53:26,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:53:26,513 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> f0c1b7bb29025bb3cfe44532e03db36f6e9424224df9a32b2b480eba846c2cfe [2025-01-09 02:53:26,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:53:26,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:53:26,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:53:26,779 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:53:26,779 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:53:26,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/nec20.c [2025-01-09 02:53:27,972 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bff7ad150/8658249ecca74f6893d53f3c13dc6a61/FLAGdcc8ecce2 [2025-01-09 02:53:28,241 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:53:28,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/nec20.c [2025-01-09 02:53:28,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bff7ad150/8658249ecca74f6893d53f3c13dc6a61/FLAGdcc8ecce2 [2025-01-09 02:53:28,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bff7ad150/8658249ecca74f6893d53f3c13dc6a61 [2025-01-09 02:53:28,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:53:28,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:53:28,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:53:28,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:53:28,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:53:28,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4479722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28, skipping insertion in model container [2025-01-09 02:53:28,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:53:28,703 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/nec20.c[356,369] [2025-01-09 02:53:28,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:53:28,730 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:53:28,740 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/nec20.c[356,369] [2025-01-09 02:53:28,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:53:28,761 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:53:28,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28 WrapperNode [2025-01-09 02:53:28,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:53:28,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:53:28,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:53:28,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:53:28,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,791 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2025-01-09 02:53:28,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:53:28,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:53:28,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:53:28,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:53:28,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,817 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-01-09 02:53:28,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:53:28,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:53:28,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:53:28,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:53:28,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (1/1) ... [2025-01-09 02:53:28,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:53:28,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:53:28,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 02:53:28,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 02:53:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:53:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:53:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 02:53:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:53:28,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:53:28,954 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:53:28,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:53:29,108 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-09 02:53:29,110 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:53:29,120 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:53:29,120 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 02:53:29,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:53:29 BoogieIcfgContainer [2025-01-09 02:53:29,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:53:29,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:53:29,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:53:29,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:53:29,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:53:28" (1/3) ... [2025-01-09 02:53:29,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca88bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:53:29, skipping insertion in model container [2025-01-09 02:53:29,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:53:28" (2/3) ... [2025-01-09 02:53:29,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca88bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:53:29, skipping insertion in model container [2025-01-09 02:53:29,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:53:29" (3/3) ... [2025-01-09 02:53:29,133 INFO L128 eAbstractionObserver]: Analyzing ICFG nec20.c [2025-01-09 02:53:29,147 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:53:29,148 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG nec20.c that has 1 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 02:53:29,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:53:29,211 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;@1a403bec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:53:29,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:53:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2025-01-09 02:53:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 02:53:29,220 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:53:29,220 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:53:29,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:53:29,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:53:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 119447375, now seen corresponding path program 1 times [2025-01-09 02:53:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:53:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053515436] [2025-01-09 02:53:29,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:53:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:53:29,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 02:53:29,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 02:53:29,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:53:29,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:53:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:53:29,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:53:29,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053515436] [2025-01-09 02:53:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053515436] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:53:29,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:53:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:53:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566247082] [2025-01-09 02:53:29,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:53:29,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:53:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:53:29,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:53:29,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:53:29,548 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-09 02:53:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:53:29,582 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2025-01-09 02:53:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:53:29,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2025-01-09 02:53:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:53:29,589 INFO L225 Difference]: With dead ends: 29 [2025-01-09 02:53:29,589 INFO L226 Difference]: Without dead ends: 13 [2025-01-09 02:53:29,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:53:29,598 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 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 [2025-01-09 02:53:29,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:53:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-01-09 02:53:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-01-09 02:53:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2025-01-09 02:53:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-01-09 02:53:29,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2025-01-09 02:53:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:53:29,626 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-01-09 02:53:29,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-09 02:53:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-01-09 02:53:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 02:53:29,627 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:53:29,627 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:53:29,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:53:29,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:53:29,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:53:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 176705677, now seen corresponding path program 1 times [2025-01-09 02:53:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:53:29,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094965903] [2025-01-09 02:53:29,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:53:29,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:53:29,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 02:53:29,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 02:53:29,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:53:29,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:53:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:53:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:53:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094965903] [2025-01-09 02:53:29,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094965903] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:53:29,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:53:29,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:53:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009614778] [2025-01-09 02:53:29,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:53:29,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:53:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:53:29,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:53:29,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:53:29,809 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-09 02:53:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:53:29,854 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2025-01-09 02:53:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:53:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2025-01-09 02:53:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:53:29,855 INFO L225 Difference]: With dead ends: 17 [2025-01-09 02:53:29,855 INFO L226 Difference]: Without dead ends: 14 [2025-01-09 02:53:29,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 02:53:29,856 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:53:29,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:53:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-01-09 02:53:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2025-01-09 02:53:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2025-01-09 02:53:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2025-01-09 02:53:29,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2025-01-09 02:53:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:53:29,859 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2025-01-09 02:53:29,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-09 02:53:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2025-01-09 02:53:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 02:53:29,859 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:53:29,860 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:53:29,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 02:53:29,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:53:29,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:53:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -592161173, now seen corresponding path program 1 times [2025-01-09 02:53:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:53:29,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590194631] [2025-01-09 02:53:29,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:53:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:53:29,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 02:53:29,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 02:53:29,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:53:29,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 02:53:29,895 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 02:53:29,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 02:53:29,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 02:53:29,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:53:29,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 02:53:29,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 02:53:29,940 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 02:53:29,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 02:53:29,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 02:53:29,945 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-09 02:53:29,963 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 02:53:29,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 02:53:29 BoogieIcfgContainer [2025-01-09 02:53:29,967 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 02:53:29,968 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 02:53:29,969 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 02:53:29,969 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 02:53:29,970 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:53:29" (3/4) ... [2025-01-09 02:53:29,970 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-09 02:53:30,010 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 7. [2025-01-09 02:53:30,048 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 02:53:30,051 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 02:53:30,051 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 02:53:30,052 INFO L158 Benchmark]: Toolchain (without parser) took 1513.89ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 49.4MB in the end (delta: 74.4MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,052 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:53:30,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.09ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.98ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:53:30,053 INFO L158 Benchmark]: Boogie Preprocessor took 40.23ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 110.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,054 INFO L158 Benchmark]: RCFGBuilder took 286.62ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 98.5MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,054 INFO L158 Benchmark]: TraceAbstraction took 843.53ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 55.2MB in the end (delta: 42.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,055 INFO L158 Benchmark]: Witness Printer took 82.72ms. Allocated memory is still 167.8MB. Free memory was 54.6MB in the beginning and 49.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 02:53:30,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.09ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.98ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.23ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 110.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 286.62ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 98.5MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 843.53ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 55.2MB in the end (delta: 42.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 82.72ms. Allocated memory is still 167.8MB. Free memory was 54.6MB in the beginning and 49.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int b; VAL [b=0] [L15] _Bool k=__VERIFIER_nondet_bool(); [L16] unsigned int i,n,j; [L17] int a[1025]; VAL [b=0, k=1] [L19] COND TRUE \read(k) [L20] n=0 VAL [b=0, n=0] [L25] i=0 [L26] j=__VERIFIER_nondet_uint() [L27] COND FALSE !(j > 10000) VAL [b=0, i=0, j=-4294966273, n=0] [L30] COND TRUE i <= n [L31] i++ [L32] j= j +2 VAL [b=0, i=1, j=-4294966271, n=0] [L30] COND FALSE !(i <= n) [L35] a[i]=0 [L36] CALL __VERIFIER_assert(j<1025) [L7] COND TRUE !(cond) VAL [b=0] [L8] reach_error() VAL [b=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-01-09 02:53:30,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE