./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 20:05:50,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 20:05:51,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 20:05:51,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 20:05:51,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 20:05:51,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 20:05:51,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 20:05:51,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 20:05:51,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 20:05:51,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 20:05:51,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 20:05:51,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 20:05:51,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 20:05:51,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 20:05:51,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 20:05:51,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 20:05:51,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 20:05:51,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 20:05:51,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 20:05:51,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 20:05:51,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 20:05:51,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 20:05:51,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 20:05:51,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 20:05:51,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 20:05:51,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 20:05:51,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 20:05:51,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 20:05:51,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 20:05:51,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 20:05:51,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 20:05:51,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 20:05:51,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 20:05:51,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 20:05:51,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 20:05:51,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 20:05:51,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 20:05:51,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 20:05:51,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 20:05:51,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 20:05:51,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 20:05:51,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-12-14 20:05:51,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 20:05:51,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 20:05:51,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 20:05:51,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 20:05:51,049 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 20:05:51,050 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 20:05:51,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 20:05:51,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 20:05:51,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 20:05:51,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 20:05:51,051 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 20:05:51,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 20:05:51,051 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_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2022-12-14 20:05:51,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 20:05:51,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 20:05:51,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 20:05:51,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 20:05:51,256 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 20:05:51,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2022-12-14 20:05:53,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 20:05:54,178 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 20:05:54,179 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2022-12-14 20:05:54,188 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/data/630f41032/6cfc6e93fb844e4dadf8a6d31b76bce0/FLAG5a1de64b5 [2022-12-14 20:05:54,199 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/data/630f41032/6cfc6e93fb844e4dadf8a6d31b76bce0 [2022-12-14 20:05:54,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 20:05:54,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 20:05:54,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 20:05:54,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 20:05:54,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 20:05:54,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2470bade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54, skipping insertion in model container [2022-12-14 20:05:54,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 20:05:54,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 20:05:54,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 20:05:54,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 20:05:54,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 20:05:54,499 INFO L208 MainTranslator]: Completed translation [2022-12-14 20:05:54,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54 WrapperNode [2022-12-14 20:05:54,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 20:05:54,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 20:05:54,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 20:05:54,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 20:05:54,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,530 INFO L138 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2022-12-14 20:05:54,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 20:05:54,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 20:05:54,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 20:05:54,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 20:05:54,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 20:05:54,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 20:05:54,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 20:05:54,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 20:05:54,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 20:05:54,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 20:05:54,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 20:05:54,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 20:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 20:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 20:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 20:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 20:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 20:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 20:05:54,690 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 20:05:54,692 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 20:05:54,798 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 20:05:54,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 20:05:54,836 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 20:05:54,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:05:54 BoogieIcfgContainer [2022-12-14 20:05:54,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 20:05:54,838 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 20:05:54,838 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 20:05:54,846 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 20:05:54,846 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:05:54" (1/1) ... [2022-12-14 20:05:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 20:05:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:05:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2022-12-14 20:05:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 20:05:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 20:05:54,890 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:05:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:05:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:05:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 20:05:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:05:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 24 transitions. [2022-12-14 20:05:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-12-14 20:05:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 20:05:55,079 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:05:55,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:05:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:05:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 20:05:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:05:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2022-12-14 20:05:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 20:05:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 20:05:55,212 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:05:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:05:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:05:55,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 20:05:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:05:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:05:55,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 20:05:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:05:55,275 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2022-12-14 20:05:55,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 08:05:55 ImpRootNode [2022-12-14 20:05:55,296 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 20:05:55,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 20:05:55,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 20:05:55,297 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 20:05:55,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:05:54" (3/4) ... [2022-12-14 20:05:55,299 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 20:05:55,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7beda6a-bd02-481d-b8b3-b313ab9419cb/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 20:05:55,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 20:05:55,322 INFO L158 Benchmark]: Toolchain (without parser) took 1120.33ms. Allocated memory is still 138.4MB. Free memory was 107.4MB in the beginning and 94.2MB in the end (delta: 13.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-12-14 20:05:55,322 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 52.5MB in the beginning and 52.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 20:05:55,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.15ms. Allocated memory is still 138.4MB. Free memory was 106.9MB in the beginning and 91.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 20:05:55,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.37ms. Allocated memory is still 138.4MB. Free memory was 91.2MB in the beginning and 89.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 20:05:55,324 INFO L158 Benchmark]: Boogie Preprocessor took 21.17ms. Allocated memory is still 138.4MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 20:05:55,325 INFO L158 Benchmark]: RCFGBuilder took 284.93ms. Allocated memory is still 138.4MB. Free memory was 88.1MB in the beginning and 73.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 20:05:55,325 INFO L158 Benchmark]: CodeCheck took 457.76ms. Allocated memory is still 138.4MB. Free memory was 73.4MB in the beginning and 96.3MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 20:05:55,326 INFO L158 Benchmark]: Witness Printer took 25.02ms. Allocated memory is still 138.4MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 20:05:55,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 21 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 2 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L517] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=2] [L518] COND FALSE !(!arr) [L519] i=0 VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=2] [L519] COND TRUE i