./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:02:56,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:02:57,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:02:57,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:02:57,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:02:57,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:02:57,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:02:57,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:02:57,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:02:57,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:02:57,118 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:02:57,118 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:02:57,118 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:02:57,119 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:02:57,119 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:02:57,119 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:02:57,119 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:02:57,119 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:02:57,120 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:02:57,120 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:02:57,120 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:02:57,120 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:02:57,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:02:57,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:02:57,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:02:57,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:02:57,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:02:57,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:02:57,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:02:57,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:02:57,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:02:57,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:02:57,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:02:57,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:02:57,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:02:57,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:02:57,123 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:02:57,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:02:57,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:02:57,124 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:02:57,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:02:57,124 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 [2024-11-14 04:02:57,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:02:57,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:02:57,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:02:57,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:02:57,542 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:02:57,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i Unable to find full path for "g++" [2024-11-14 04:02:59,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:03:00,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:03:00,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2024-11-14 04:03:00,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/data/102bf5e82/7d7cc5de87464dcfbb80f761d9bff4d4/FLAG6cc40261c [2024-11-14 04:03:00,484 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/data/102bf5e82/7d7cc5de87464dcfbb80f761d9bff4d4 [2024-11-14 04:03:00,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:03:00,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:03:00,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:03:00,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:03:00,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:03:00,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:03:00" (1/1) ... [2024-11-14 04:03:00,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263bd9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:00, skipping insertion in model container [2024-11-14 04:03:00,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:03:00" (1/1) ... [2024-11-14 04:03:00,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:03:00,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:03:01,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:03:01,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:03:01,125 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:03:01,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01 WrapperNode [2024-11-14 04:03:01,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:03:01,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:03:01,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:03:01,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:03:01,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,192 INFO L138 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-14 04:03:01,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:03:01,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:03:01,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:03:01,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:03:01,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:03:01,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:03:01,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:03:01,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:03:01,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (1/1) ... [2024-11-14 04:03:01,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:03:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:01,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:03:01,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:03:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:03:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:03:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:03:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:03:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:03:01,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:03:01,485 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:03:01,488 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:03:01,726 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-14 04:03:01,727 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:03:01,812 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:03:01,813 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:03:01,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:03:01 BoogieIcfgContainer [2024-11-14 04:03:01,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:03:01,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:03:01,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:03:01,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:03:01,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:03:00" (1/3) ... [2024-11-14 04:03:01,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbad3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:03:01, skipping insertion in model container [2024-11-14 04:03:01,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:01" (2/3) ... [2024-11-14 04:03:01,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbad3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:03:01, skipping insertion in model container [2024-11-14 04:03:01,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:03:01" (3/3) ... [2024-11-14 04:03:01,829 INFO L112 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2024-11-14 04:03:01,854 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:03:01,856 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG add_last_unsafe.i that has 1 procedures, 26 locations, 1 initial locations, 2 loop locations, and 13 error locations. [2024-11-14 04:03:01,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:03:01,949 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=FINITE_AUTOMATA, 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;@1df15e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:03:01,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-14 04:03:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 25 states have internal predecessors, (29), 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) [2024-11-14 04:03:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 04:03:01,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:01,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 04:03:01,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-14 04:03:01,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 96532, now seen corresponding path program 1 times [2024-11-14 04:03:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:01,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687375191] [2024-11-14 04:03:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:01,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:02,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687375191] [2024-11-14 04:03:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687375191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:03:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:03:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:03:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864029566] [2024-11-14 04:03:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:03:02,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:03:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:03:02,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:03:02,317 INFO L87 Difference]: Start difference. First operand has 26 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 25 states have internal predecessors, (29), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 04:03:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:02,408 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2024-11-14 04:03:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:03:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-14 04:03:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:02,428 INFO L225 Difference]: With dead ends: 26 [2024-11-14 04:03:02,428 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 04:03:02,433 INFO L431 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 [2024-11-14 04:03:02,439 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:02,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 13 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:03:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 04:03:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 04:03:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 24 states have internal predecessors, (26), 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) [2024-11-14 04:03:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-14 04:03:02,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 3 [2024-11-14 04:03:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:02,484 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-14 04:03:02,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 04:03:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-14 04:03:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:03:02,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:02,486 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:03:02,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:03:02,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-14 04:03:02,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2993260, now seen corresponding path program 1 times [2024-11-14 04:03:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848985545] [2024-11-14 04:03:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:02,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848985545] [2024-11-14 04:03:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848985545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:03:02,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:03:02,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:03:02,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282836549] [2024-11-14 04:03:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:03:02,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:03:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:03:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:03:02,706 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-14 04:03:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:02,763 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-14 04:03:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:03:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2024-11-14 04:03:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:02,766 INFO L225 Difference]: With dead ends: 22 [2024-11-14 04:03:02,766 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 04:03:02,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:03:02,767 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:02,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:03:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 04:03:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-14 04:03:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 21 states have internal predecessors, (23), 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) [2024-11-14 04:03:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-14 04:03:02,776 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2024-11-14 04:03:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:02,777 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-14 04:03:02,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-14 04:03:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-14 04:03:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:03:02,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:02,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:03:02,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:03:02,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-14 04:03:02,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2993261, now seen corresponding path program 1 times [2024-11-14 04:03:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:02,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687524821] [2024-11-14 04:03:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:03:02,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:03:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:03:02,847 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 04:03:02,847 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:03:02,849 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2024-11-14 04:03:02,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2024-11-14 04:03:02,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2024-11-14 04:03:02,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2024-11-14 04:03:02,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2024-11-14 04:03:02,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2024-11-14 04:03:02,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2024-11-14 04:03:02,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2024-11-14 04:03:02,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2024-11-14 04:03:02,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2024-11-14 04:03:02,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2024-11-14 04:03:02,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2024-11-14 04:03:02,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2024-11-14 04:03:02,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:03:02,859 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-14 04:03:02,877 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:03:02,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:03:02 BoogieIcfgContainer [2024-11-14 04:03:02,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:03:02,883 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:03:02,883 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:03:02,883 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:03:02,884 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:03:01" (3/4) ... [2024-11-14 04:03:02,885 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 04:03:02,922 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:03:02,922 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:03:02,923 INFO L158 Benchmark]: Toolchain (without parser) took 2432.56ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 78.7MB in the end (delta: 13.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-11-14 04:03:02,923 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:02,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.34ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 76.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:03:02,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.77ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:02,924 INFO L158 Benchmark]: Boogie Preprocessor took 44.07ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 778.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:02,924 INFO L158 Benchmark]: RCFGBuilder took 574.45ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 58.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:03:02,925 INFO L158 Benchmark]: TraceAbstraction took 1064.86ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 80.5MB in the end (delta: -22.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:02,925 INFO L158 Benchmark]: Witness Printer took 39.28ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:02,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.34ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 76.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.77ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.07ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 778.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.45ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 58.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1064.86ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 80.5MB in the end (delta: -22.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.28ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.7MB in the end (delta: 1.8MB). 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: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND FALSE !(length < 1) [L516] int *arr = __builtin_alloca (length); VAL [arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __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: 512]: 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, 26 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 20 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2024-11-14 04:03:02,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff5a8e-8b9d-47c0-88fd-f83b6f0c940f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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)