./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be --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 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:27:55,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:27:56,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:27:56,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:27:56,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:27:56,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:27:56,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:27:56,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:27:56,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:27:56,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:27:56,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:27:56,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:27:56,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:27:56,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:27:56,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:27:56,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:27:56,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:27:56,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:27:56,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:27:56,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:27:56,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:27:56,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:27:56,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:27:56,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:27:56,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:27:56,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:27:56,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:27:56,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:27:56,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:27:56,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:27:56,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:27:56,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:27:56,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:27:56,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:27:56,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:27:56,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:27:56,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:27:56,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:27:56,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:27:56,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:27:56,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:27:56,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:27:56,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:27:56,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:27:56,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:27:56,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:27:56,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:27:56,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:27:56,143 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:27:56,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:27:56,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:27:56,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:27:56,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:27:56,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:27:56,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:27:56,146 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:27:56,146 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:27:56,146 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:27:56,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:27:56,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:27:56,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:27:56,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:27:56,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:27:56,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:27:56,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:27:56,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:27:56,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:27:56,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:27:56,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:27:56,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:27:56,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:27:56,152 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_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2021-10-21 19:27:56,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:27:56,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:27:56,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:27:56,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:27:56,428 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:27:56,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-10-21 19:27:56,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/data/50ccec54b/4ad64121f84d477eaa243635234d2a0a/FLAG36f70d9ca [2021-10-21 19:27:56,929 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:27:56,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-10-21 19:27:56,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/data/50ccec54b/4ad64121f84d477eaa243635234d2a0a/FLAG36f70d9ca [2021-10-21 19:27:57,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/data/50ccec54b/4ad64121f84d477eaa243635234d2a0a [2021-10-21 19:27:57,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:27:57,360 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:27:57,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:27:57,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:27:57,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:27:57,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe302cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57, skipping insertion in model container [2021-10-21 19:27:57,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:27:57,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:27:57,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:27:57,604 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:27:57,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:27:57,633 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:27:57,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57 WrapperNode [2021-10-21 19:27:57,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:27:57,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:27:57,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:27:57,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:27:57,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:27:57,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:27:57,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:27:57,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:27:57,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:27:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:27:57,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:27:57,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:27:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:27:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:27:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2021-10-21 19:27:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:27:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:27:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:27:58,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:27:58,035 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 19:27:58,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:58 BoogieIcfgContainer [2021-10-21 19:27:58,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:27:58,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:27:58,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:27:58,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:27:58,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:27:57" (1/3) ... [2021-10-21 19:27:58,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4f955f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:27:58, skipping insertion in model container [2021-10-21 19:27:58,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57" (2/3) ... [2021-10-21 19:27:58,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4f955f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:27:58, skipping insertion in model container [2021-10-21 19:27:58,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:58" (3/3) ... [2021-10-21 19:27:58,046 INFO L111 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2021-10-21 19:27:58,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:27:58,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-21 19:27:58,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:27:58,120 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 [2021-10-21 19:27:58,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-21 19:27:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:27:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:27:58,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:27:58,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:27:58,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting diffErr0REQUIRES_VIOLATION === [diffErr0REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION (and 4 more)] === [2021-10-21 19:27:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:27:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash -633667021, now seen corresponding path program 1 times [2021-10-21 19:27:58,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:27:58,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478233750] [2021-10-21 19:27:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:27:58,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:27:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:27:58,315 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:27:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:27:58,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:27:58,399 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:27:58,400 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location diffErr0REQUIRES_VIOLATION [2021-10-21 19:27:58,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr1REQUIRES_VIOLATION [2021-10-21 19:27:58,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr2REQUIRES_VIOLATION [2021-10-21 19:27:58,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr3REQUIRES_VIOLATION [2021-10-21 19:27:58,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr4REQUIRES_VIOLATION [2021-10-21 19:27:58,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr5REQUIRES_VIOLATION [2021-10-21 19:27:58,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr6REQUIRES_VIOLATION [2021-10-21 19:27:58,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location diffErr7REQUIRES_VIOLATION [2021-10-21 19:27:58,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:27:58,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:27:58,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:27:58,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:27:58 BoogieIcfgContainer [2021-10-21 19:27:58,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:27:58,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:27:58,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:27:58,456 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:27:58,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:58" (3/4) ... [2021-10-21 19:27:58,459 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:27:58,524 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:27:58,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:27:58,525 INFO L168 Benchmark]: Toolchain (without parser) took 1164.31 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.3 MB in the beginning and 66.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:58,526 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:58,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.75 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 95.6 MB in the end (delta: -36.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:58,527 INFO L168 Benchmark]: Boogie Preprocessor took 44.68 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:58,527 INFO L168 Benchmark]: RCFGBuilder took 357.69 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 83.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:58,528 INFO L168 Benchmark]: TraceAbstraction took 415.63 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 68.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:58,528 INFO L168 Benchmark]: Witness Printer took 67.79 ms. Allocated memory is still 119.5 MB. Free memory was 68.9 MB in the beginning and 66.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:58,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.75 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 95.6 MB in the end (delta: -36.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.68 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 357.69 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 83.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 415.63 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 68.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 67.79 ms. Allocated memory is still 119.5 MB. Free memory was 68.9 MB in the beginning and 66.8 MB in the end (delta: 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; VAL [Alen=2, Blen=3] [L35] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=2, \old(Blen)=3, A={11:9}, B={12:6}, D={5:7}] [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [\old(Alen)=2, \old(Blen)=3, A={11:9}, A={11:9}, Alen=2, B={12:6}, B={12:6}, Blen=3, D={5:7}, D={5:7}, i=0, k=0, l1=2, l2=3] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [\old(Alen)=2, \old(Blen)=3, A={11:9}, A={11:9}, Alen=2, B={12:6}, B={12:6}, Blen=3, D={5:7}, D={5:7}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L14] COND TRUE j < l2 && !found VAL [\old(Alen)=2, \old(Blen)=3, A={11:9}, A={11:9}, Alen=2, B={12:6}, B={12:6}, Blen=3, D={5:7}, D={5:7}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L15] A[i] - UnprovableResult [Line: 15]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 29]: 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 4 procedures, 34 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 322.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 26.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 67.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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! [2021-10-21 19:27:58,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70717544-fd1a-4415-b1b3-57a53d5a0dcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...