./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/derefInLoop1.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 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:13:40,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:13:40,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:13:40,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:13:40,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:13:40,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:13:40,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:13:40,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:13:40,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:13:40,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:13:40,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:13:40,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:13:40,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:13:40,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:13:40,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:13:40,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:13:40,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:13:40,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:13:40,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:13:40,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:13:40,685 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:13:40,689 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:13:40,689 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:13:40,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:13:40,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:13:40,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:13:40,690 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:13:40,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:13:40,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:13:40,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:13:40,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:13:40,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:13:40,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:13:40,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:13:40,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:13:40,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:13:40,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:13:40,692 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 [2024-11-10 15:13:40,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:13:40,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:13:40,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:13:40,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:13:40,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:13:40,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2024-11-10 15:13:42,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:13:42,192 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:13:42,192 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2024-11-10 15:13:42,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3e7a4f6/72c47794832840af92a2de059a25f162/FLAGa0bb8179d [2024-11-10 15:13:42,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3e7a4f6/72c47794832840af92a2de059a25f162 [2024-11-10 15:13:42,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:13:42,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:13:42,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:13:42,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:13:42,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:13:42,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205d9c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42, skipping insertion in model container [2024-11-10 15:13:42,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:13:42,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:13:42,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:13:42,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:13:42,797 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:13:42,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42 WrapperNode [2024-11-10 15:13:42,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:13:42,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:13:42,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:13:42,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:13:42,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,819 INFO L138 Inliner]: procedures = 7, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2024-11-10 15:13:42,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:13:42,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:13:42,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:13:42,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:13:42,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,836 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]. [2024-11-10 15:13:42,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:13:42,849 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:13:42,849 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:13:42,850 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:13:42,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (1/1) ... [2024-11-10 15:13:42,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:13:42,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:13:42,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:13:42,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:13:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:13:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:13:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:13:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:13:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:13:42,960 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:13:42,961 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:13:43,037 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-10 15:13:43,038 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:13:43,046 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:13:43,046 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:13:43,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:13:43 BoogieIcfgContainer [2024-11-10 15:13:43,046 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:13:43,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:13:43,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:13:43,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:13:43,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:13:42" (1/3) ... [2024-11-10 15:13:43,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350deb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:13:43, skipping insertion in model container [2024-11-10 15:13:43,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:13:42" (2/3) ... [2024-11-10 15:13:43,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350deb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:13:43, skipping insertion in model container [2024-11-10 15:13:43,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:13:43" (3/3) ... [2024-11-10 15:13:43,056 INFO L112 eAbstractionObserver]: Analyzing ICFG derefInLoop1.c [2024-11-10 15:13:43,068 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:13:43,069 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 15:13:43,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:13:43,108 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;@31fccb64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:13:43,109 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 15:13:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:13:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:13:43,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:13:43,116 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:13:43,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2024-11-10 15:13:43,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:13:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1448572349, now seen corresponding path program 1 times [2024-11-10 15:13:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:13:43,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294929576] [2024-11-10 15:13:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:13:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:13:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:13:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:13:43,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:13:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294929576] [2024-11-10 15:13:43,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294929576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:13:43,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:13:43,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:13:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201635828] [2024-11-10 15:13:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:13:43,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:13:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:13:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:13:43,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:13:43,303 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-11-10 15:13:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:13:43,339 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-10 15:13:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:13:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 [2024-11-10 15:13:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:13:43,348 INFO L225 Difference]: With dead ends: 20 [2024-11-10 15:13:43,349 INFO L226 Difference]: Without dead ends: 17 [2024-11-10 15:13:43,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:13:43,354 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:13:43,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:13:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-10 15:13:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-10 15:13:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:13:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-10 15:13:43,379 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2024-11-10 15:13:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:13:43,379 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-10 15:13:43,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:13:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-10 15:13:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:13:43,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:13:43,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 15:13:43,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:13:43,380 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2024-11-10 15:13:43,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:13:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash -955898405, now seen corresponding path program 1 times [2024-11-10 15:13:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:13:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129939568] [2024-11-10 15:13:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:13:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:13:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 15:13:43,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 15:13:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 15:13:43,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 15:13:43,444 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 15:13:43,445 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2024-11-10 15:13:43,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-11-10 15:13:43,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 3 remaining) [2024-11-10 15:13:43,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:13:43,451 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 15:13:43,465 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 15:13:43,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:13:43 BoogieIcfgContainer [2024-11-10 15:13:43,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 15:13:43,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 15:13:43,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 15:13:43,471 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 15:13:43,471 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:13:43" (3/4) ... [2024-11-10 15:13:43,472 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-10 15:13:43,501 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 15:13:43,501 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 15:13:43,502 INFO L158 Benchmark]: Toolchain (without parser) took 884.64ms. Allocated memory is still 169.9MB. Free memory was 115.5MB in the beginning and 62.7MB in the end (delta: 52.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,502 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:13:43,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.05ms. Allocated memory is still 169.9MB. Free memory was 115.5MB in the beginning and 102.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.56ms. Allocated memory is still 169.9MB. Free memory was 102.5MB in the beginning and 101.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,503 INFO L158 Benchmark]: Boogie Preprocessor took 28.27ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 99.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,503 INFO L158 Benchmark]: IcfgBuilder took 196.87ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 89.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,503 INFO L158 Benchmark]: TraceAbstraction took 421.17ms. Allocated memory is still 169.9MB. Free memory was 89.0MB in the beginning and 64.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 15:13:43,504 INFO L158 Benchmark]: Witness Printer took 30.35ms. Allocated memory is still 169.9MB. Free memory was 64.2MB in the beginning and 62.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:13:43,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.05ms. Allocated memory is still 169.9MB. Free memory was 115.5MB in the beginning and 102.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.56ms. Allocated memory is still 169.9MB. Free memory was 102.5MB in the beginning and 101.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.27ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 99.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 196.87ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 89.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 421.17ms. Allocated memory is still 169.9MB. Free memory was 89.0MB in the beginning and 64.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 30.35ms. Allocated memory is still 169.9MB. Free memory was 64.2MB in the beginning and 62.7MB in the end (delta: 1.5MB). There was no memory consumed. 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 all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 14 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-10 15:13:43,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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)