./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/list_flag-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-properties/list_flag-1.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 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:05:59,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:05:59,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:05:59,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:05:59,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:05:59,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:05:59,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:05:59,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:05:59,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:05:59,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:05:59,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:05:59,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:05:59,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:05:59,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:05:59,603 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:05:59,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:05:59,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:05:59,604 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:05:59,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:05:59,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:05:59,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:05:59,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:05:59,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:05:59,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:05:59,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:05:59,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:05:59,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:05:59,609 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:05:59,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:05:59,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:05:59,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:05:59,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:05:59,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:05:59,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:05:59,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:05:59,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:05:59,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:05:59,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:05:59,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:05:59,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:05:59,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:05:59,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:05:59,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b [2024-11-09 22:05:59,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:05:59,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:05:59,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:05:59,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:05:59,885 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:05:59,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-1.i [2024-11-09 22:06:01,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:06:01,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:06:01,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-1.i [2024-11-09 22:06:01,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05326b53a/90b5483fce9445db8a36a6bf32d27391/FLAG744c92e01 [2024-11-09 22:06:01,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05326b53a/90b5483fce9445db8a36a6bf32d27391 [2024-11-09 22:06:01,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:06:01,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:06:01,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:06:01,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:06:01,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:06:01,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:01" (1/1) ... [2024-11-09 22:06:01,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9fa769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:01, skipping insertion in model container [2024-11-09 22:06:01,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:01" (1/1) ... [2024-11-09 22:06:01,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:06:02,296 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/list-properties/list_flag-1.i[23375,23388] [2024-11-09 22:06:02,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:06:02,309 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:06:02,359 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/list-properties/list_flag-1.i[23375,23388] [2024-11-09 22:06:02,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:06:02,397 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:06:02,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02 WrapperNode [2024-11-09 22:06:02,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:06:02,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:06:02,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:06:02,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:06:02,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,448 INFO L138 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2024-11-09 22:06:02,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:06:02,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:06:02,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:06:02,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:06:02,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,474 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-09 22:06:02,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,482 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:06:02,488 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:06:02,488 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:06:02,489 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:06:02,489 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (1/1) ... [2024-11-09 22:06:02,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:06:02,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:06:02,517 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) [2024-11-09 22:06:02,519 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 [2024-11-09 22:06:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-09 22:06:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-09 22:06:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 22:06:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 22:06:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 22:06:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 22:06:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 22:06:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:06:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:06:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:06:02,670 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:06:02,672 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:06:02,691 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-09 22:06:02,799 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-09 22:06:02,799 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:06:02,809 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:06:02,810 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:06:02,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:02 BoogieIcfgContainer [2024-11-09 22:06:02,810 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:06:02,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:06:02,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:06:02,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:06:02,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:06:01" (1/3) ... [2024-11-09 22:06:02,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544dd264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:02, skipping insertion in model container [2024-11-09 22:06:02,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:02" (2/3) ... [2024-11-09 22:06:02,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544dd264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:02, skipping insertion in model container [2024-11-09 22:06:02,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:02" (3/3) ... [2024-11-09 22:06:02,821 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2024-11-09 22:06:02,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:06:02,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:06:02,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:06:02,907 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;@56ce2d12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:06:02,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:06:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.48) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:06:02,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 22:06:02,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:02,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:02,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:02,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1436629864, now seen corresponding path program 1 times [2024-11-09 22:06:02,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:02,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250395311] [2024-11-09 22:06:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:02,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250395311] [2024-11-09 22:06:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250395311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:06:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240722629] [2024-11-09 22:06:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:03,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:06:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:06:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:06:03,096 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.48) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-09 22:06:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:03,110 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-09 22:06:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:06:03,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-09 22:06:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:03,119 INFO L225 Difference]: With dead ends: 43 [2024-11-09 22:06:03,119 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 22:06:03,122 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 [2024-11-09 22:06:03,127 INFO L432 NwaCegarLoop]: 34 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, 34 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 [2024-11-09 22:06:03,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 22:06:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 22:06:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2024-11-09 22:06:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-09 22:06:03,153 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2024-11-09 22:06:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:03,154 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-09 22:06:03,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-09 22:06:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-09 22:06:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:06:03,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:03,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:03,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:06:03,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:03,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1793720211, now seen corresponding path program 1 times [2024-11-09 22:06:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:03,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44208034] [2024-11-09 22:06:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:03,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:03,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44208034] [2024-11-09 22:06:03,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44208034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:03,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:03,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:06:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885944664] [2024-11-09 22:06:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:03,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:06:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:06:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:06:03,529 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 22:06:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:03,602 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-09 22:06:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:06:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2024-11-09 22:06:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:03,603 INFO L225 Difference]: With dead ends: 38 [2024-11-09 22:06:03,603 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 22:06:03,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:06:03,606 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:03,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:06:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 22:06:03,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-11-09 22:06:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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) [2024-11-09 22:06:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-09 22:06:03,620 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2024-11-09 22:06:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:03,620 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-09 22:06:03,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 22:06:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-09 22:06:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 22:06:03,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:03,622 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:03,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:06:03,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:03,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -889791470, now seen corresponding path program 1 times [2024-11-09 22:06:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313317189] [2024-11-09 22:06:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:03,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313317189] [2024-11-09 22:06:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313317189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:06:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334689394] [2024-11-09 22:06:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:03,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:06:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:06:03,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:06:03,778 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 22:06:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:03,837 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-09 22:06:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:06:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-11-09 22:06:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:03,838 INFO L225 Difference]: With dead ends: 40 [2024-11-09 22:06:03,838 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 22:06:03,838 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 [2024-11-09 22:06:03,839 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:03,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 22:06:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-09 22:06:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 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) [2024-11-09 22:06:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-09 22:06:03,844 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2024-11-09 22:06:03,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:03,844 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-09 22:06:03,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 22:06:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-09 22:06:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 22:06:03,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:03,845 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:03,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:06:03,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:03,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash 377052307, now seen corresponding path program 1 times [2024-11-09 22:06:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636081937] [2024-11-09 22:06:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:03,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636081937] [2024-11-09 22:06:03,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636081937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:03,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:06:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682347365] [2024-11-09 22:06:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:03,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:06:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:06:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:06:03,967 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 22:06:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:04,031 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-09 22:06:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:06:04,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-11-09 22:06:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:04,033 INFO L225 Difference]: With dead ends: 38 [2024-11-09 22:06:04,034 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 22:06:04,035 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 [2024-11-09 22:06:04,036 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:04,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 22:06:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-11-09 22:06:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2024-11-09 22:06:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 22:06:04,045 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-09 22:06:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:04,045 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 22:06:04,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-09 22:06:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 22:06:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 22:06:04,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:04,047 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:04,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:06:04,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:04,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1958559474, now seen corresponding path program 1 times [2024-11-09 22:06:04,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345579114] [2024-11-09 22:06:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 22:06:04,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 22:06:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 22:06:04,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 22:06:04,124 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 22:06:04,125 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:06:04,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 22:06:04,132 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 22:06:04,155 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:06:04,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:06:04 BoogieIcfgContainer [2024-11-09 22:06:04,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:06:04,164 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:06:04,166 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:06:04,167 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:06:04,167 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:02" (3/4) ... [2024-11-09 22:06:04,168 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 22:06:04,210 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:06:04,210 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:06:04,211 INFO L158 Benchmark]: Toolchain (without parser) took 2344.49ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 99.9MB in the beginning and 159.3MB in the end (delta: -59.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:06:04,211 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:06:04,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.82ms. Allocated memory is still 153.1MB. Free memory was 99.6MB in the beginning and 115.3MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 22:06:04,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.33ms. Allocated memory is still 153.1MB. Free memory was 115.3MB in the beginning and 113.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:06:04,212 INFO L158 Benchmark]: Boogie Preprocessor took 37.46ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:06:04,212 INFO L158 Benchmark]: IcfgBuilder took 321.91ms. Allocated memory is still 153.1MB. Free memory was 111.5MB in the beginning and 97.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 22:06:04,212 INFO L158 Benchmark]: TraceAbstraction took 1350.24ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 97.3MB in the beginning and 161.4MB in the end (delta: -64.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:06:04,213 INFO L158 Benchmark]: Witness Printer took 46.53ms. Allocated memory is still 205.5MB. Free memory was 161.4MB in the beginning and 159.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:06:04,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.82ms. Allocated memory is still 153.1MB. Free memory was 99.6MB in the beginning and 115.3MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.33ms. Allocated memory is still 153.1MB. Free memory was 115.3MB in the beginning and 113.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.46ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 321.91ms. Allocated memory is still 153.1MB. Free memory was 111.5MB in the beginning and 97.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1350.24ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 97.3MB in the beginning and 161.4MB in the end (delta: -64.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.53ms. Allocated memory is still 205.5MB. Free memory was 161.4MB in the beginning and 159.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L536] p = a VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) VAL [a={-1:0}, flag=1, p={-1:0}, t={-2:0}] [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a VAL [flag=1, p={-1:0}] [L550] COND TRUE \read(flag) [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 127 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 88 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-09 22:06:04,236 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE