./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:23:24,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:23:24,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:23:24,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:23:24,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:23:24,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:23:24,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:23:24,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:23:24,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:23:24,143 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:23:24,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:23:24,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:23:24,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:23:24,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:23:24,144 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:23:24,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:23:24,144 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:23:24,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:23:24,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:23:24,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:23:24,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:23:24,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:23:24,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:23:24,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:23:24,148 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 [2025-01-09 22:23:24,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:23:24,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:23:24,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:23:24,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:23:24,445 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:23:24,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2025-01-09 22:23:25,869 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2bb881ab4/ca5a41f870e045fcb6931275464dbea9/FLAG85ce33650 [2025-01-09 22:23:26,175 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:23:26,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2025-01-09 22:23:26,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2bb881ab4/ca5a41f870e045fcb6931275464dbea9/FLAG85ce33650 [2025-01-09 22:23:26,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2bb881ab4/ca5a41f870e045fcb6931275464dbea9 [2025-01-09 22:23:26,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:23:26,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:23:26,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:23:26,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:23:26,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:23:26,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@804ddd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26, skipping insertion in model container [2025-01-09 22:23:26,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:23:26,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:23:26,371 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:23:26,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:23:26,397 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:23:26,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26 WrapperNode [2025-01-09 22:23:26,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:23:26,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:23:26,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:23:26,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:23:26,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,425 INFO L138 Inliner]: procedures = 7, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 22:23:26,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:23:26,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:23:26,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:23:26,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:23:26,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,446 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2025-01-09 22:23:26,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,452 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:23:26,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:23:26,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:23:26,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:23:26,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (1/1) ... [2025-01-09 22:23:26,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:23:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:23:26,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:23:26,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:23:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 22:23:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:23:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:23:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 22:23:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:23:26,561 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:23:26,563 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:23:26,658 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 22:23:26,658 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:23:26,666 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:23:26,667 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:23:26,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:23:26 BoogieIcfgContainer [2025-01-09 22:23:26,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:23:26,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:23:26,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:23:26,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:23:26,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:23:26" (1/3) ... [2025-01-09 22:23:26,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4c895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:23:26, skipping insertion in model container [2025-01-09 22:23:26,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:23:26" (2/3) ... [2025-01-09 22:23:26,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4c895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:23:26, skipping insertion in model container [2025-01-09 22:23:26,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:23:26" (3/3) ... [2025-01-09 22:23:26,680 INFO L128 eAbstractionObserver]: Analyzing ICFG derefInLoop1.c [2025-01-09 22:23:26,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:23:26,697 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG derefInLoop1.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 3 error locations. [2025-01-09 22:23:26,737 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:23:26,753 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=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;@42dd8f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:23:26,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 22:23:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 8 states have (on average 1.625) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-09 22:23:26,762 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:23:26,762 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-09 22:23:26,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 22:23:26,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:23:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash 926021, now seen corresponding path program 1 times [2025-01-09 22:23:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:23:26,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128708357] [2025-01-09 22:23:26,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:23:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:23:26,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-09 22:23:26,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-09 22:23:26,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:23:26,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:23:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:23:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:23:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128708357] [2025-01-09 22:23:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128708357] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:23:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:23:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:23:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987835970] [2025-01-09 22:23:26,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:23:26,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:23:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:23:26,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:23:26,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:23:26,954 INFO L87 Difference]: Start difference. First operand has 12 states, 8 states have (on average 1.625) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:23:26,993 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2025-01-09 22:23:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:23:26,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-01-09 22:23:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:23:27,001 INFO L225 Difference]: With dead ends: 15 [2025-01-09 22:23:27,002 INFO L226 Difference]: Without dead ends: 13 [2025-01-09 22:23:27,004 INFO L434 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 [2025-01-09 22:23:27,009 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:23:27,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:23:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-01-09 22:23:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-01-09 22:23:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-01-09 22:23:27,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2025-01-09 22:23:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:23:27,041 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-01-09 22:23:27,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-01-09 22:23:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 22:23:27,042 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:23:27,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:23:27,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:23:27,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 22:23:27,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:23:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1805893836, now seen corresponding path program 1 times [2025-01-09 22:23:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:23:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158762091] [2025-01-09 22:23:27,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:23:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:23:27,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 22:23:27,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 22:23:27,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:23:27,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:23:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:23:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:23:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158762091] [2025-01-09 22:23:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158762091] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:23:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155943527] [2025-01-09 22:23:27,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:23:27,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:23:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:23:27,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:23:27,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:23:27,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 22:23:27,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 22:23:27,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:23:27,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:23:27,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 22:23:27,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:23:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:23:27,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:23:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:23:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155943527] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:23:27,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:23:27,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-01-09 22:23:27,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118866135] [2025-01-09 22:23:27,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:23:27,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:23:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:23:27,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:23:27,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:23:27,305 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:23:27,331 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2025-01-09 22:23:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:23:27,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-09 22:23:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:23:27,332 INFO L225 Difference]: With dead ends: 14 [2025-01-09 22:23:27,332 INFO L226 Difference]: Without dead ends: 14 [2025-01-09 22:23:27,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:23:27,333 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:23:27,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:23:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-01-09 22:23:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-01-09 22:23:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2025-01-09 22:23:27,335 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2025-01-09 22:23:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:23:27,335 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2025-01-09 22:23:27,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:23:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2025-01-09 22:23:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 22:23:27,338 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:23:27,338 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:23:27,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 22:23:27,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:23:27,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 22:23:27,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:23:27,542 INFO L85 PathProgramCache]: Analyzing trace with hash 148122270, now seen corresponding path program 1 times [2025-01-09 22:23:27,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:23:27,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496146343] [2025-01-09 22:23:27,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:23:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:23:27,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 22:23:27,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 22:23:27,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:23:27,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:23:27,569 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 22:23:27,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 22:23:27,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 22:23:27,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:23:27,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:23:27,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 22:23:27,593 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 22:23:27,594 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2025-01-09 22:23:27,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2025-01-09 22:23:27,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2025-01-09 22:23:27,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 22:23:27,599 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-09 22:23:27,613 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 22:23:27,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:23:27 BoogieIcfgContainer [2025-01-09 22:23:27,616 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 22:23:27,617 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 22:23:27,617 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 22:23:27,617 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 22:23:27,618 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:23:26" (3/4) ... [2025-01-09 22:23:27,618 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-09 22:23:27,654 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 5. [2025-01-09 22:23:27,697 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 22:23:27,698 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 22:23:27,698 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 22:23:27,699 INFO L158 Benchmark]: Toolchain (without parser) took 1491.94ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 53.5MB in the end (delta: 58.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-01-09 22:23:27,699 INFO L158 Benchmark]: CDTParser took 1.15ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:23:27,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.77ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 102.1MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:23:27,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.31ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 101.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:23:27,701 INFO L158 Benchmark]: Boogie Preprocessor took 32.45ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 100.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:23:27,701 INFO L158 Benchmark]: RCFGBuilder took 206.39ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 90.0MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:23:27,701 INFO L158 Benchmark]: TraceAbstraction took 946.39ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 58.7MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 22:23:27,701 INFO L158 Benchmark]: Witness Printer took 81.05ms. Allocated memory is still 142.6MB. Free memory was 58.7MB in the beginning and 53.5MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:23:27,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.77ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 102.1MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.31ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 101.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.45ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 100.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.39ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 90.0MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 946.39ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 58.7MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 81.05ms. Allocated memory is still 142.6MB. Free memory was 58.7MB in the beginning and 53.5MB in the end (delta: 5.3MB). 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: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={3:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [i=0, p={3:0}] [L3] i++ VAL [i=1, p={3:0}] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={2:0}, i=1, p={3:0}] [L5] COND FALSE !(i == 0) [L8] p[0] = 1 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 17 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-01-09 22:23:27,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)