./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:44:08,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:44:08,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:44:08,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:44:08,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:44:08,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:44:08,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:44:08,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:44:08,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:44:08,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:44:08,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:44:08,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:44:08,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:44:08,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:44:08,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:44:08,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:44:08,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:44:08,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:44:08,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:44:08,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:44:08,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:44:08,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:44:08,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:44:08,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:44:08,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:44:08,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:44:08,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:44:08,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:44:08,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:44:08,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:44:08,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:44:08,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:44:08,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:44:08,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:44:08,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:44:08,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:44:08,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:44:08,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:44:08,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:44:08,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:44:08,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:44:08,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:44:08,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:44:08,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:44:08,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:44:08,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:44:08,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:44:08,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:44:08,944 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:44:08,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:44:08,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:44:08,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:44:08,945 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:44:08,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:44:08,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:44:08,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:44:08,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:44:08,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:44:08,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:44:08,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:44:08,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:44:08,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:44:08,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:44:08,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:44:08,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:44:08,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:44:08,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 [2021-11-02 22:44:09,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:44:09,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:44:09,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:44:09,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:44:09,285 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:44:09,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-11-02 22:44:09,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/data/a548ac4ed/1304a06cf8884342b1566291e3fe5f61/FLAGcdf8ab473 [2021-11-02 22:44:09,895 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:44:09,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-11-02 22:44:09,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/data/a548ac4ed/1304a06cf8884342b1566291e3fe5f61/FLAGcdf8ab473 [2021-11-02 22:44:10,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/data/a548ac4ed/1304a06cf8884342b1566291e3fe5f61 [2021-11-02 22:44:10,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:44:10,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:44:10,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:44:10,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:44:10,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:44:10,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c98666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10, skipping insertion in model container [2021-11-02 22:44:10,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:44:10,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:44:10,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:44:10,518 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:44:10,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:44:10,546 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:44:10,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10 WrapperNode [2021-11-02 22:44:10,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:44:10,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:44:10,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:44:10,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:44:10,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:44:10,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:44:10,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:44:10,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:44:10,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (1/1) ... [2021-11-02 22:44:10,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:44:10,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:10,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:44:10,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:44:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:44:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:44:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:44:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-11-02 22:44:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:44:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:44:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:44:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:44:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:44:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:44:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:44:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:44:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:44:10,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:44:10,905 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-02 22:44:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:44:10 BoogieIcfgContainer [2021-11-02 22:44:10,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:44:10,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:44:10,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:44:10,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:44:10,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:44:10" (1/3) ... [2021-11-02 22:44:10,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b218b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:44:10, skipping insertion in model container [2021-11-02 22:44:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:10" (2/3) ... [2021-11-02 22:44:10,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b218b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:44:10, skipping insertion in model container [2021-11-02 22:44:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:44:10" (3/3) ... [2021-11-02 22:44:10,915 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2021-11-02 22:44:10,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:44:10,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 22:44:10,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:44:10,970 INFO L339 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, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:44:10,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 22:44:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-02 22:44:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:44:11,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:11,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:11,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-02 22:44:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 262489660, now seen corresponding path program 1 times [2021-11-02 22:44:11,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:11,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289673608] [2021-11-02 22:44:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:11,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:44:11,267 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:44:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:44:11,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:44:11,332 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:44:11,333 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0REQUIRES_VIOLATION [2021-11-02 22:44:11,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-02 22:44:11,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-02 22:44:11,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-02 22:44:11,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 22:44:11,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:44:11,340 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-02 22:44:11,344 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:44:11,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:44:11 BoogieIcfgContainer [2021-11-02 22:44:11,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:44:11,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:44:11,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:44:11,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:44:11,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:44:10" (3/4) ... [2021-11-02 22:44:11,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-02 22:44:11,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:44:11,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:44:11,401 INFO L168 Benchmark]: Toolchain (without parser) took 1115.42 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 44.9 MB in the beginning and 64.7 MB in the end (delta: -19.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:44:11,405 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:44:11,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.15 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 79.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:44:11,407 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 78.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:44:11,409 INFO L168 Benchmark]: RCFGBuilder took 329.06 ms. Allocated memory is still 107.0 MB. Free memory was 78.2 MB in the beginning and 81.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:44:11,411 INFO L168 Benchmark]: TraceAbstraction took 452.63 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 66.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:44:11,411 INFO L168 Benchmark]: Witness Printer took 36.98 ms. Allocated memory is still 107.0 MB. Free memory was 66.4 MB in the beginning and 64.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:44:11,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.15 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 79.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 78.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 329.06 ms. Allocated memory is still 107.0 MB. Free memory was 78.2 MB in the beginning and 81.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 452.63 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 66.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.98 ms. Allocated memory is still 107.0 MB. Free memory was 66.4 MB in the beginning and 64.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND TRUE __VERIFIER_nondet_int() [L10] int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] int myNumberA = 7; VAL [myPointerA={8:0}, myPointerB={0:0}] [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB VAL [myNumberB={5:0}, myPointerA={8:0}, myPointerB={5:0}] [L18] \read(*myPointerA) - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 4]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 9 NumberOfCodeBlocks, 9 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! [2021-11-02 22:44:11,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c604e5fe-b17f-4449-a879-c1775a67bde0/bin/uautomizer-tBqnrhUYjU/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)