./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/array-examples/relax-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/array-examples/relax-2.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 4d1a5b1aaeea1384c01ada79eea031deec1df8a5701a1c0a9b79a1f8c8ad0399 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:13:10,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:13:10,589 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:13:10,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:13:10,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:13:10,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:13:10,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:13:10,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:13:10,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:13:10,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:13:10,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:13:10,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:13:10,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:13:10,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:13:10,619 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:13:10,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:13:10,619 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:13:10,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:13:10,620 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:13:10,620 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:10,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:13:10,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:10,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:13:10,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d1a5b1aaeea1384c01ada79eea031deec1df8a5701a1c0a9b79a1f8c8ad0399 [2025-04-29 11:13:10,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:13:10,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:13:10,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:13:10,855 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:13:10,856 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:13:10,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.c [2025-04-29 11:13:12,128 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196efed51/53a9bb7d55e74fd98f88a566797bd158/FLAGdb2cdc43e [2025-04-29 11:13:12,331 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:13:12,332 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.c [2025-04-29 11:13:12,333 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:13:12,333 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:13:12,340 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196efed51/53a9bb7d55e74fd98f88a566797bd158/FLAGdb2cdc43e [2025-04-29 11:13:13,128 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196efed51/53a9bb7d55e74fd98f88a566797bd158 [2025-04-29 11:13:13,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:13:13,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:13:13,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:13:13,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:13:13,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:13:13,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a3322f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13, skipping insertion in model container [2025-04-29 11:13:13,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:13:13,252 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:13:13,258 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:13:13,284 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:13:13,292 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:13:13,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13 WrapperNode [2025-04-29 11:13:13,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:13:13,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:13:13,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:13:13,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:13:13,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,318 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2025-04-29 11:13:13,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:13:13,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:13:13,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:13:13,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:13:13,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,340 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [6, 6]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2025-04-29 11:13:13,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:13:13,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:13:13,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:13:13,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:13:13,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (1/1) ... [2025-04-29 11:13:13,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:13:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:13:13,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:13:13,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-04-29 11:13:13,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:13:13,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-29 11:13:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-04-29 11:13:13,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-04-29 11:13:13,452 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:13:13,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:13:13,787 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2025-04-29 11:13:13,788 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:13:13,798 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:13:13,800 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:13:13,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:13 BoogieIcfgContainer [2025-04-29 11:13:13,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:13:13,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:13:13,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:13:13,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:13:13,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:13:13" (1/3) ... [2025-04-29 11:13:13,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485adf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:13:13, skipping insertion in model container [2025-04-29 11:13:13,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:13:13" (2/3) ... [2025-04-29 11:13:13,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485adf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:13:13, skipping insertion in model container [2025-04-29 11:13:13,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:13" (3/3) ... [2025-04-29 11:13:13,807 INFO L128 eAbstractionObserver]: Analyzing ICFG relax-2.c [2025-04-29 11:13:13,818 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:13:13,819 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG relax-2.c that has 3 procedures, 84 locations, 110 edges, 1 initial locations, 5 loop locations, and 25 error locations. [2025-04-29 11:13:13,852 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:13:13,862 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37abe25f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:13:13,862 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-04-29 11:13:13,866 INFO L278 IsEmpty]: Start isEmpty. Operand has 84 states, 51 states have (on average 1.8627450980392157) internal successors, (95), 79 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2025-04-29 11:13:13,869 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-29 11:13:13,869 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:13:13,870 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-29 11:13:13,870 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-04-29 11:13:13,874 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:13:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2025-04-29 11:13:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:13:13,880 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574044228] [2025-04-29 11:13:13,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:13:13,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:13:13,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-29 11:13:13,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-29 11:13:13,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:13,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:13:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:13:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:13:14,138 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574044228] [2025-04-29 11:13:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574044228] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:13:14,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:13:14,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:13:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073681510] [2025-04-29 11:13:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:13:14,143 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:13:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:13:14,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:13:14,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,163 INFO L87 Difference]: Start difference. First operand has 84 states, 51 states have (on average 1.8627450980392157) internal successors, (95), 79 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) 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) [2025-04-29 11:13:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:13:14,250 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2025-04-29 11:13:14,251 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:13:14,252 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2025-04-29 11:13:14,252 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:13:14,257 INFO L225 Difference]: With dead ends: 78 [2025-04-29 11:13:14,257 INFO L226 Difference]: Without dead ends: 75 [2025-04-29 11:13:14,260 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:13:14,262 INFO L437 NwaCegarLoop]: 70 mSDtfsCounter, 70 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:13:14,263 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 78 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:13:14,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-04-29 11:13:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2025-04-29 11:13:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.75) internal successors, (84), 70 states have internal predecessors, (84), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2025-04-29 11:13:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2025-04-29 11:13:14,295 INFO L79 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 4 [2025-04-29 11:13:14,295 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:13:14,295 INFO L485 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2025-04-29 11:13:14,295 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2025-04-29 11:13:14,295 INFO L278 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2025-04-29 11:13:14,295 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-29 11:13:14,296 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:13:14,296 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-29 11:13:14,296 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:13:14,296 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-04-29 11:13:14,296 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:13:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2025-04-29 11:13:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:13:14,296 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440503208] [2025-04-29 11:13:14,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:13:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:13:14,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-29 11:13:14,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-29 11:13:14,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:13:14,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:13:14,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-29 11:13:14,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-29 11:13:14,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:13:14,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:13:14,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:13:14,357 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:13:14,358 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2025-04-29 11:13:14,359 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2025-04-29 11:13:14,359 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2025-04-29 11:13:14,359 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2025-04-29 11:13:14,359 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2025-04-29 11:13:14,360 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2025-04-29 11:13:14,361 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2025-04-29 11:13:14,361 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2025-04-29 11:13:14,361 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2025-04-29 11:13:14,361 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 25 remaining) [2025-04-29 11:13:14,361 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:13:14,363 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-29 11:13:14,380 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:13:14,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:13:14 BoogieIcfgContainer [2025-04-29 11:13:14,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:13:14,384 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:13:14,384 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:13:14,384 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:13:14,385 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:13:13" (3/4) ... [2025-04-29 11:13:14,385 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:13:14,408 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-04-29 11:13:14,436 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:13:14,436 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:13:14,436 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:13:14,437 INFO L158 Benchmark]: Toolchain (without parser) took 1306.12ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 99.7MB in the end (delta: 12.9MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,438 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.96ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 97.5MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.39ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.5MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: RCFGBuilder took 448.03ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 71.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: TraceAbstraction took 582.02ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 105.1MB in the end (delta: -34.2MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,440 INFO L158 Benchmark]: Witness Printer took 52.64ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 99.7MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:13:14,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.96ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 97.5MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.39ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.5MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 448.03ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 71.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 582.02ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 105.1MB in the end (delta: -34.2MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Witness Printer took 52.64ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 99.7MB in the end (delta: 5.4MB). 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: [L130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L132] int *pat=malloc(sizeof(int)*pat_len); [L133] int *a=malloc(sizeof(int)*a_len); [L139] int j = 0; VAL [a={-1:0}, a_len=1, j=0, pat={-2:0}, pat_len=1073741824] [L139] COND TRUE j < pat_len [L140] pat[j] = __VERIFIER_nondet_int() - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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. - 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 128]: 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 3 procedures, 84 locations, 110 edges, 25 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 70 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:13:14,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)