./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2 --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-4fc63b2 [2024-11-02 12:30:41,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:41,100 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:30:41,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:41,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:41,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:41,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:41,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:41,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:41,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:41,150 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:41,150 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:41,150 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:41,150 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:41,151 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:41,151 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:41,151 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:41,152 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:41,152 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:41,152 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:41,156 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:41,157 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:41,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:30:41,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:30:41,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:41,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:41,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:41,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:41,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:41,161 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:30:41,163 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:30:41,163 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:30:41,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:41,164 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:30:41,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:41,164 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:30:41,165 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:41,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:41,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:41,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:41,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:41,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:41,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:41,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:41,168 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:41,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:41,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:41,169 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:41,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:41,169 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_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2024-11-02 12:30:41,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:41,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:41,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:41,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:41,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:41,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c Unable to find full path for "g++" [2024-11-02 12:30:43,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:43,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:43,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2024-11-02 12:30:43,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/data/bb810246b/37fc841ed7dc4882979cd365c7148214/FLAG47ab76852 [2024-11-02 12:30:44,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/data/bb810246b/37fc841ed7dc4882979cd365c7148214 [2024-11-02 12:30:44,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:44,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:44,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:44,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:44,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:44,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0d0f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44, skipping insertion in model container [2024-11-02 12:30:44,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:44,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:44,534 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:44,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:44,564 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:44,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44 WrapperNode [2024-11-02 12:30:44,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:44,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:44,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:44,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:44,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,602 INFO L138 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-11-02 12:30:44,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:44,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:44,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:44,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:44,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:44,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:44,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:44,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:44,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:44,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:44,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:30:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:30:44,809 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:44,813 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:45,007 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:45,008 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:45,043 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:45,043 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:30:45,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:45 BoogieIcfgContainer [2024-11-02 12:30:45,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:45,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:45,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:45,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:45,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:44" (1/3) ... [2024-11-02 12:30:45,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630dc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:45, skipping insertion in model container [2024-11-02 12:30:45,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (2/3) ... [2024-11-02 12:30:45,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630dc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:45, skipping insertion in model container [2024-11-02 12:30:45,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:45" (3/3) ... [2024-11-02 12:30:45,055 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2024-11-02 12:30:45,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:45,075 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-02 12:30:45,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:45,140 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;@b8c5c69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:45,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-02 12:30:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 2.1) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-02 12:30:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:30:45,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:45,155 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:30:45,156 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)] === [2024-11-02 12:30:45,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 77234, now seen corresponding path program 1 times [2024-11-02 12:30:45,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915748836] [2024-11-02 12:30:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:30:45,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:30:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:30:45,350 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:30:45,352 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:30:45,354 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-02 12:30:45,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-02 12:30:45,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-02 12:30:45,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-02 12:30:45,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-02 12:30:45,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-02 12:30:45,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-02 12:30:45,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:45,367 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:30:45,389 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:30:45,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:30:45 BoogieIcfgContainer [2024-11-02 12:30:45,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:30:45,396 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:30:45,396 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:30:45,396 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:30:45,397 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:45" (3/4) ... [2024-11-02 12:30:45,398 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:30:45,451 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:30:45,451 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:30:45,453 INFO L158 Benchmark]: Toolchain (without parser) took 1151.89ms. Allocated memory is still 138.4MB. Free memory was 104.5MB in the beginning and 60.0MB in the end (delta: 44.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,453 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:30:45,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.00ms. Allocated memory is still 138.4MB. Free memory was 104.0MB in the beginning and 92.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,455 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 138.4MB. Free memory was 92.5MB in the beginning and 90.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:30:45,456 INFO L158 Benchmark]: Boogie Preprocessor took 29.32ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,456 INFO L158 Benchmark]: RCFGBuilder took 409.08ms. Allocated memory is still 138.4MB. Free memory was 89.4MB in the beginning and 76.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,457 INFO L158 Benchmark]: TraceAbstraction took 348.27ms. Allocated memory is still 138.4MB. Free memory was 75.8MB in the beginning and 61.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,461 INFO L158 Benchmark]: Witness Printer took 55.70ms. Allocated memory is still 138.4MB. Free memory was 61.6MB in the beginning and 60.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:30:45,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.00ms. Allocated memory is still 138.4MB. Free memory was 104.0MB in the beginning and 92.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 138.4MB. Free memory was 92.5MB in the beginning and 90.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.32ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 409.08ms. Allocated memory is still 138.4MB. Free memory was 89.4MB in the beginning and 76.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 348.27ms. Allocated memory is still 138.4MB. Free memory was 75.8MB in the beginning and 61.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 55.70ms. Allocated memory is still 138.4MB. Free memory was 61.6MB in the beginning and 60.0MB in the end (delta: 1.6MB). 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={2:-1}, n=1, s1={2:-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, 18 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=18occurred 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, 3 NumberOfCodeBlocks, 3 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! [2024-11-02 12:30:45,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbfd8ae-21dc-4431-855a-3ceab052d4db/bin/utaipan-verify-DbMuA5NWw2/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)