./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje --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 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:21:45,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:21:45,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 05:21:45,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:21:45,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:21:45,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:21:45,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:21:45,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:21:45,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:21:45,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:21:45,372 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:21:45,372 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:21:45,373 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:21:45,373 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:21:45,373 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:21:45,373 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:21:45,374 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:21:45,374 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:21:45,374 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:21:45,374 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:21:45,375 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:21:45,378 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:21:45,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:21:45,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:21:45,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:21:45,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:21:45,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:21:45,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:21:45,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:21:45,381 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:21:45,381 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:21:45,382 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:21:45,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:21:45,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:21:45,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:21:45,383 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:21:45,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:21:45,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:21:45,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:21:45,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:21:45,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:21:45,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:21:45,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:21:45,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:21:45,387 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:21:45,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:21:45,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:21:45,389 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:21:45,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:21:45,389 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2024-11-09 05:21:45,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:21:45,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:21:45,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:21:45,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:21:45,765 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:21:45,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c Unable to find full path for "g++" [2024-11-09 05:21:47,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:21:48,154 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:21:48,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2024-11-09 05:21:48,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/data/7de251414/c95765c0b3be48748de0d6c6b8ab0c5e/FLAG906f07276 [2024-11-09 05:21:48,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/data/7de251414/c95765c0b3be48748de0d6c6b8ab0c5e [2024-11-09 05:21:48,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:21:48,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:21:48,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:21:48,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:21:48,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:21:48,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e760175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48, skipping insertion in model container [2024-11-09 05:21:48,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:21:48,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:21:48,445 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:21:48,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:21:48,483 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:21:48,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48 WrapperNode [2024-11-09 05:21:48,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:21:48,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:21:48,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:21:48,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:21:48,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,536 INFO L138 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-09 05:21:48,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:21:48,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:21:48,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:21:48,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:21:48,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:21:48,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:21:48,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:21:48,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:21:48,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (1/1) ... [2024-11-09 05:21:48,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:21:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:48,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:21:48,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:21:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:21:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:21:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:21:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:21:48,773 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:21:48,777 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:21:48,984 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-09 05:21:48,984 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:21:49,033 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:21:49,033 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:21:49,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:49 BoogieIcfgContainer [2024-11-09 05:21:49,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:21:49,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:21:49,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:21:49,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:21:49,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:21:48" (1/3) ... [2024-11-09 05:21:49,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46706ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:21:49, skipping insertion in model container [2024-11-09 05:21:49,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:48" (2/3) ... [2024-11-09 05:21:49,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46706ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:21:49, skipping insertion in model container [2024-11-09 05:21:49,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:49" (3/3) ... [2024-11-09 05:21:49,054 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2024-11-09 05:21:49,094 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:21:49,095 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 05:21:49,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:21:49,165 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;@65822e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:21:49,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 05:21:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 2.090909090909091) internal successors, (23), 18 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) [2024-11-09 05:21:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 05:21:49,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:49,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 05:21:49,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 05:21:49,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2359609, now seen corresponding path program 1 times [2024-11-09 05:21:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:21:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6959318] [2024-11-09 05:21:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:21:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:21:49,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:21:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:21:49,365 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:21:49,367 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:21:49,369 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-09 05:21:49,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-09 05:21:49,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-09 05:21:49,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-09 05:21:49,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-09 05:21:49,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-09 05:21:49,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-09 05:21:49,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:21:49,381 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 05:21:49,404 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:21:49,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:21:49 BoogieIcfgContainer [2024-11-09 05:21:49,408 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:21:49,409 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:21:49,410 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:21:49,410 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:21:49,411 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:49" (3/4) ... [2024-11-09 05:21:49,415 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 05:21:49,473 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:21:49,473 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:21:49,475 INFO L158 Benchmark]: Toolchain (without parser) took 1277.43ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 76.1MB in the beginning and 107.3MB in the end (delta: -31.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,477 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 86.8MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:21:49,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.08ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 63.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.26ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 62.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,479 INFO L158 Benchmark]: Boogie Preprocessor took 35.53ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,480 INFO L158 Benchmark]: RCFGBuilder took 460.74ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 121.3MB in the end (delta: -60.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,483 INFO L158 Benchmark]: TraceAbstraction took 370.94ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 109.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,484 INFO L158 Benchmark]: Witness Printer took 64.01ms. Allocated memory is still 151.0MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:21:49,487 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 86.8MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.08ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 63.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.26ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 62.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.53ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.74ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 121.3MB in the end (delta: -60.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 370.94ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 109.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 64.01ms. Allocated memory is still 151.0MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [dst={3:-1}, n=1, s1={3:-1}] [L10] COND FALSE !(n > 0) VAL [dst={3:-1}, n=1, s1={3:-1}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - 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: 26]: 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, 19 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2024-11-09 05:21:49,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14eececb-a858-424a-b41e-ddda179c2d9f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)