./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe8659524aaabfc3b732701c57a07dd418c7603854cb094bd7ec0dc78f4d5f89 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:13:10,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:13:10,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:13:10,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:13:10,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:13:10,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:13:10,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:13:10,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:13:10,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:13:10,704 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:13:10,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:13:10,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:13:10,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:13:10,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:13:10,705 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:13:10,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:13:10,705 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:13:10,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:13:10,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:13:10,706 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:13:10,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:10,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:13:10,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:10,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:13:10,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:13:10,708 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/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> fe8659524aaabfc3b732701c57a07dd418c7603854cb094bd7ec0dc78f4d5f89 [2025-04-29 11:13:10,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:13:10,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:13:10,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:13:10,944 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:13:10,945 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:13:10,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.c [2025-04-29 11:13:12,388 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3dc3336/fd2ae28e8326488a8a3e43f5793ea1f4/FLAG9bacdb887 [2025-04-29 11:13:12,578 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:13:12,579 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/count_down_unsafe.c [2025-04-29 11:13:12,580 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:13:12,585 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3dc3336/fd2ae28e8326488a8a3e43f5793ea1f4/FLAG9bacdb887 [2025-04-29 11:13:13,589 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3dc3336/fd2ae28e8326488a8a3e43f5793ea1f4 [2025-04-29 11:13:13,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:13:13,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:13:13,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:13:13,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:13:13,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:13:13,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f49ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13, skipping insertion in model container [2025-04-29 11:13:13,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:13:13,759 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:13:13,769 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:13:13,793 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:13:13,806 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:13:13,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13 WrapperNode [2025-04-29 11:13:13,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:13:13,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:13:13,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:13:13,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:13:13,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,833 INFO L138 Inliner]: procedures = 8, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-04-29 11:13:13,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:13:13,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:13:13,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:13:13,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:13:13,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,848 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-29 11:13:13,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,851 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:13:13,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:13:13,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:13:13,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:13:13,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:13:13,887 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) [2025-04-29 11:13:13,892 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 [2025-04-29 11:13:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:13:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:13:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:13:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:13:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-29 11:13:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:13:13,942 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:13:13,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:13:14,073 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-04-29 11:13:14,074 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:13:14,080 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:13:14,080 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-29 11:13:14,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:14 BoogieIcfgContainer [2025-04-29 11:13:14,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:13:14,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:13:14,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:13:14,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:13:14,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:13:13" (1/3) ... [2025-04-29 11:13:14,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261394c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:13:14, skipping insertion in model container [2025-04-29 11:13:14,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (2/3) ... [2025-04-29 11:13:14,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261394c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:13:14, skipping insertion in model container [2025-04-29 11:13:14,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:14" (3/3) ... [2025-04-29 11:13:14,087 INFO L128 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.c [2025-04-29 11:13:14,099 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:13:14,100 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG count_down_unsafe.c that has 1 procedures, 29 locations, 35 edges, 1 initial locations, 3 loop locations, and 9 error locations. [2025-04-29 11:13:14,130 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:13:14,139 INFO L340 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=None, 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;@7c88d639, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:13:14,140 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-29 11:13:14,142 INFO L278 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.8421052631578947) 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) [2025-04-29 11:13:14,145 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-29 11:13:14,146 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:13:14,146 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-29 11:13:14,146 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-29 11:13:14,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:13:14,151 INFO L85 PathProgramCache]: Analyzing trace with hash 889508761, now seen corresponding path program 1 times [2025-04-29 11:13:14,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:13:14,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122537833] [2025-04-29 11:13:14,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:13:14,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:13:14,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-29 11:13:14,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-29 11:13:14,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:13:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:13:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:13:14,286 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122537833] [2025-04-29 11:13:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122537833] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:13:14,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:13:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:13:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488464629] [2025-04-29 11:13:14,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:13:14,291 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:13:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:13:14,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:13:14,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,309 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.8421052631578947) 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-04-29 11:13:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:13:14,359 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-04-29 11:13:14,360 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:13:14,361 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2025-04-29 11:13:14,361 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:13:14,365 INFO L225 Difference]: With dead ends: 29 [2025-04-29 11:13:14,366 INFO L226 Difference]: Without dead ends: 27 [2025-04-29 11:13:14,367 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,371 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:13:14,371 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:13:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-04-29 11:13:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-04-29 11:13:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 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) [2025-04-29 11:13:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-04-29 11:13:14,393 INFO L79 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-04-29 11:13:14,393 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:13:14,393 INFO L485 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-04-29 11:13:14,394 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-04-29 11:13:14,394 INFO L278 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-04-29 11:13:14,394 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-29 11:13:14,394 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:13:14,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:13:14,395 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:13:14,395 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-29 11:13:14,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:13:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash 119445392, now seen corresponding path program 1 times [2025-04-29 11:13:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:13:14,396 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152449448] [2025-04-29 11:13:14,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:13:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:13:14,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:13:14,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:13:14,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:13:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:13:14,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:13:14,477 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152449448] [2025-04-29 11:13:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152449448] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:13:14,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:13:14,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:13:14,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292059529] [2025-04-29 11:13:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:13:14,478 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:13:14,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:13:14,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:13:14,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,480 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2025-04-29 11:13:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:13:14,510 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2025-04-29 11:13:14,510 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:13:14,510 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2025-04-29 11:13:14,510 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:13:14,511 INFO L225 Difference]: With dead ends: 23 [2025-04-29 11:13:14,511 INFO L226 Difference]: Without dead ends: 23 [2025-04-29 11:13:14,511 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,512 INFO L437 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:13:14,512 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:13:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-04-29 11:13:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-04-29 11:13:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) 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) [2025-04-29 11:13:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-04-29 11:13:14,516 INFO L79 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2025-04-29 11:13:14,516 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:13:14,516 INFO L485 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-04-29 11:13:14,516 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2025-04-29 11:13:14,516 INFO L278 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-04-29 11:13:14,516 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-29 11:13:14,517 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:13:14,517 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:13:14,517 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:13:14,517 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-29 11:13:14,517 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:13:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 119445393, now seen corresponding path program 1 times [2025-04-29 11:13:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:13:14,517 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273582900] [2025-04-29 11:13:14,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:13:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:13:14,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:13:14,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:13:14,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:13:14,537 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:13:14,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:13:14,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:13:14,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:13:14,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:13:14,556 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:13:14,556 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2025-04-29 11:13:14,559 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2025-04-29 11:13:14,560 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2025-04-29 11:13:14,560 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:13:14,563 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:13:14,583 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:13:14,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:13:14 BoogieIcfgContainer [2025-04-29 11:13:14,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:13:14,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:13:14,589 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:13:14,589 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:13:14,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:14" (3/4) ... [2025-04-29 11:13:14,590 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:13:14,616 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 5. [2025-04-29 11:13:14,652 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:13:14,653 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:13:14,653 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:13:14,654 INFO L158 Benchmark]: Toolchain (without parser) took 1061.86ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 47.1MB in the end (delta: 66.4MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,654 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:13:14,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.55ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 99.8MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.04ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.5MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,656 INFO L158 Benchmark]: Boogie Preprocessor took 29.36ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:13:14,656 INFO L158 Benchmark]: RCFGBuilder took 216.04ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 84.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,656 INFO L158 Benchmark]: TraceAbstraction took 504.02ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 52.2MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,657 INFO L158 Benchmark]: Witness Printer took 64.54ms. Allocated memory is still 142.6MB. Free memory was 52.2MB in the beginning and 47.1MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.55ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 99.8MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.04ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.5MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.36ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.04ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 84.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 504.02ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 52.2MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 64.54ms. Allocated memory is still 142.6MB. Free memory was 52.2MB in the beginning and 47.1MB in the end (delta: 5.0MB). 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int i, j; [L6] int val; [L7] int length = __VERIFIER_nondet_int(); [L8] COND TRUE length < 1 [L8] length = 1 VAL [length=1] [L9] int *arr = alloca(length); VAL [arr={2:0}, length=1] [L10] COND FALSE !(!arr) [L11] i=0 VAL [arr={2:0}, i=0, length=1] [L11] COND TRUE i